EXHIBIT NO. 10(a)

                           NEW CROSS LICENCE AGREEMENT


New Cross Licence  Agreement made this 27th day of September 1997 by and between
(1) Verity Group plc, a public company  incorporated  in England and Wales under
number  514718 with its  registered  office at Stonehill,  Huntingdon  PE18 6ED,
England  ("Verity");  (2) New Transducers  Limited, a private company limited by
shares  incorporated  in  England  and  Wales  under  number  3135528  with  its
registered office at Stonehill,  Huntingdon PE18 6ED, England ("NXT"); (3) Noise
Cancellation  Technologies,  Inc., a Delaware  corporation  with offices at 1025
West Nursery Road, Linthicum,  Maryland 21090, USA, ("NCTI");  and (4) NCT Audio
Products,  Inc, a Delaware  corporation  with offices at 1025 West Nursery Road,
Linthicum, Maryland 21090, USA ("NAPI").

WHEREAS NXT is engaged in the  development  and commercial  exploitation of flat
panel speakers  including  distributed mode loudspeakers and ancillary panel and
transducer technology; and

WHEREAS  NCTI was engaged in the  development  and  commercial  exploitation  of
active wave  management  technology  including  flat panel  speakers but has now
exclusively licensed the NCTI Rights (as defined below) to NAPI (which has taken
over such  development  and  exploitation)  subject  to certain  rights  already
granted to NXT, OnActive LLC and Electrolux; and

WHEREAS NXT, NCTI and Verity entered into a Cross Licence on 15 April 1997 under
which Verity paid US$3 million to NCTI by way of shares for exclusive  rights to
certain fields and NXT granted  exclusive rights to certain other fields to NCTI
in order to prevent  controversies over their separate and parallel  development
of panel loudspeaker technology,  to accelerate the process of bringing products
which benefit from both  technologies  to market,  and to broaden access to both
technologies for potential licensees ; and

WHEREAS by a novation  agreement of 15 April 1997,  NXT,  NCTI and Verity agreed
that Verity be released and  discharged  from the Cross  Licence and that NXT be
bound by the terms of the Cross Licence in the place of Verity; and

WHEREAS  NXT,  NCTI and Verity have now agreed to terminate  the previous  Cross
Licence and certain of the related agreements and enter into a New Cross Licence
in order to better exploit the panel loudspeaker technologies; and

WHEREAS this  Agreement  sets out the terms of the New Cross Licence which shall
come into effect as from the date of this Agreement.

NOW THEREFORE,  in consideration of the mutual covenants  contained  herein,  as
well as other good and valuable  consideration,  the receipt and  sufficiency of
which are hereby acknowledged, the parties agree as follows:

1. Definitions

As used herein, the terms described below have the following meanings.

1.1     "Affiliate" shall mean:

        (A)     any legal entity in which a party has an Interest;

        (B)     any legal  entity  which  directly  or  indirectly  Controls a
                party ("Parent");

        (C)     any legal entity in which a Parent has an Interest; or

        (D)     any company  listed in Schedule D so long as the  percentage  of
                shares held by a party or an  Affiliate  as defined in (A) - (C)
                does not fall below the  percentage  stated for that  company in
                Schedule C.

        For purposes of this Agreement "Control" of an entity shall be deemed to
        exist by virtue  of having  the right to  influence  the  operation  and
        affairs  thereof by holding  directly  51% or more of each of the equity
        interests  and voting  rights in such  entity.  "Interest"  in an entity
        shall be deemed to exist by virtue of owning  voting  rights equal to or
        greater than 50% of all voting rights in such entity.

1.2     "Commencement Date" shall mean the date of this Agreement.

1.3     "Cross Licence" shall mean the Cross Licence  Agreement of 15 April 1997
        between Verity, NXT and NCTI.

1.4     "DERA Technology" shall mean the patents,  associated know-how and other
        intellectual   property  rights  relating  to  flat  panel  loudspeakers
        licensed to Verity  and/or NXT by the Defence  and  Evaluation  Research
        Agency or by any other  similar  emanation of the Secretary of State for
        Defence.

1.5     "Excluded Rights" shall mean both of:

        (A)     certain rights granted  exclusively by NCTI to Electrolux  prior
                to 31  December  1996 (to the extent  that such rights have been
                disclosed in writing to NXT); and

        (B)     certain rights granted exclusively by NCTI to OnActive LLC prior
                to 31  December  1996 (to the extent  that such rights have been
                disclosed in writing to NXT).

1.6     "Horton Opinion" shall mean the letter addressed to NXT from John Horton
        (in-house  legal  counsel  to NCTI and NAPI)  under  which an opinion is
        given in relation to, inter alia, the due execution,  authorisation  and
        enforceability  of, inter alia, this  Agreement,  the Master Licence and
        the Subscription Agreement.

1.7     "IPR" shall mean rights  (whether  registered  or  unregistered)  in any
        designs,  applications for any of the foregoing,  copyright,  topography
        rights and database rights.

1.8     "JIP Rights" shall mean the DERA  Technology,  the NCTI Rights and the
        NXT Rights.

1.9     "Licensed   Products"   shall  mean  any  product  or  component   which
        incorporates,  embodies,  is covered by, is claimed by, or is based upon
        any of the NCTI  Rights  licensed  under  clause  3.1 or the NXT  Rights
        licensed under clause 4.

1.10    "Master  Licence"  shall mean a licence on agreed terms  between NXT and
        NAPI which,  for the avoidance of doubt,  shall not include any right to
        sub-license.

1.11    "NCTI Fields" shall mean the following fields only:

        (A)     hearing aids,  hearing assistance devices and other devices to
                assist impaired hearing;

        (B)     headsets,  headphones,  earplugs.  earbuds,  earmuffs, and all
                forms  of "on  the  ear"  and "in the  ear"  sound  generating
                devices  (for the  avoidance  of doubt,  this field  shall not
                include communications  handsets such as telephones,  cellular
                telephones,   speaker  telephones,   telephone   conferencing,
                two-way radios,  mobile radios, ham radios, CB radios,  public
                telephones,  wireless  telephones,  SMR telephones,  answering
                machines, pagers); and

        (C)     aircraft  including,  but not limited to, all civil and military
                fixed and rotary wing aircraft of any nature and any other craft
                capable of sustained flight.

1.12    "NCTI  Patents"  shall mean all  published  or  unpublished  patents and
        patent applications and filed disclosures  (including any continuations,
        continuations-in-part, divisions, extensions, reissues, re-examinations,
        renewals or equivalent applications whenever and wherever filed) which:

        (A)     have been filed or made prior to 31 December 1996; and

        (B)     relate to flat panel speakers,  acoustic objects,  transducers
                or related acoustic technology; and

        (C)     are owned by or  licensed  (with the  right to  sub-license)  to
                NCTI,  NAPI or their  Affiliates  (other  than  under the Master
                Licence) now or at any time

        including, without limitation, those listed in Schedule A.

1.13    "NCTI Technology"  shall mean all confidential  information and know-how
        in  existence  prior to 31 December  1996 within the power,  possession,
        custody and control of NCTI,  NAPI or their  Affiliates  which supports,
        amplifies,  explains or enables the design or manufacture of any product
        in the NXT Fields embodying any of the  specifications  or claims of the
        NCTI Patents or otherwise making use of the NCTI IPR, but excluding such
        confidential   information  and  know-how  which  NCTI,  NAPI  or  their
        Affiliates  are not  entitled to disclose  where NXT has been given full
        written  details  of  the  reasons  why  such  information  may  not  be
        disclosed.

1.14    "NCTI IPR" shall mean all IPR in  existence  prior to 31  December  1996
        owned by or licensed to NCTI, NAPI or their  Affiliates which relates to
        panel  loudspeakers  acoustic  objects,  transducers or related acoustic
        technology  but  excluding  such  other  IPR which  NCTI,  NAPI or their
        Affiliates  are not  entitled  to license  where NXT has been given full
        written details of the reasons why such IPR may not be licensed.

1.15    "NCTI Rights"  shall mean all of the NCTI Patents,  the NCTI IPR and the
        NCTI Technology subject only to the Excluded Rights.

1.16    "Net Licensing  Revenues"  shall mean the gross  revenues  received by a
        party  from  its  respective   licensing  of  third  parties   including
        Affiliates to make or produce Licensed Products less:

        (A)     royalties payable to third parties; and

        (B)     taxes not based upon income.

1.17    "Net Sales  Revenues"  shall mean the revenues  received  from the sale,
        lease or other transfer by a party of Licensed Products less:

        (A)     costs of packing, transportation and insurance;

        (B)     sales, value added and other taxes not based on income;

        (C)     ordinary trade discounts and commissions;

        (D)     customs duties and expenses; and

        (E)     royalties payable to third parties.

1.18    "Novation  Agreement" shall mean the novation agreement of 15 April 1997
        between NXT, NCTI and Verity.

1.19    "NXT  Fields"  shall mean all fields of use  excluding  all  devices and
        systems  whose  sole  purpose is  reducing,  isolating,  controlling  or
        alternating noise or vibration.

1.20    "NXT IPR"  shall mean all IPR in  existence  prior to 31  December  1996
        owned by or licensed to NXT which relates to panel loudspeakers acoustic
        objects,  transducers or related  acoustic  technology but excluding the
        DERA  Technology and such other IPR which NXT is not entitled to license
        where NAPI has been given full  written  details of the reasons why such
        IPR may not be licensed

1.21    "NXT Patents" shall mean all published or unpublished patents and patent
        applications  and  filed  disclosures   (including  any   continuations,
        continuations-in-part, divisions, extensions, reissues, re-examinations,
        renewals or equivalent applications whenever and wherever filed) which:

        (A)     have been filed or made prior to 31 December 1996; and

        (B)     relate to flat panel speakers,  acoustic objects,  transducers
                or related acoustic technology; and

        (C)     are owned by or licensed  (with the right to  sub-license)  to
                NXT or its  Affiliates  (other  than the NCTI  Patents and the
                DERA Technology)

        including, without limitation, those listed in Schedule B.

1.22    "NXT Rights" shall mean all of the NXT Patents,  the NXT IPR and the NXT
        Technology.

1.23    "NXT Technology" shall mean all confidential information and know-how in
        existence  prior to 31  December  1996  within  the  power,  possession,
        custody  and  control  of NXT which  supports,  amplifies,  explains  or
        enables  the design or  manufacture  of any  product in the NCTI  Fields
        embodying  any of the  specifications  or claims of the NXT  Patents  or
        otherwise  making use of the NXT IPR, but excluding the DERA  Technology
        and  such  confidential  information  and  know-how  which  NXT  or  its
        Affiliates  are not entitled to disclose  where NAPI has been given full
        written  details  of  the  reasons  why  such  information  may  not  be
        disclosed.

1.24    "Simmons & Simmons Opinion" shall mean the letter addressed to NAPI from
        Simmons & Simmons  (solicitors to Verity and NXT) under which an opinion
        is given in relation to, inter alia,  the due  execution,  authorisation
        and  enforceability  of, inter alia, this Agreement,  the Master Licence
        and the Subscription Agreement.

1.25    "Subscription  Agreement"  shall  mean the  private  placement  offering
        subscription  agreement and  questionnaire  in agreed form between NCTI,
        NAPI and Verity.

In this Agreement where the context admits:

1.26    words and phrases the  definitions of which are contained or referred to
        in Part  XXIV  Companies  Act 1985  shall be  construed  as  having  the
        meanings so attributed to them.

1.27    references to any document being in agreed terms are to that document in
        the form signed on behalf of the parties for identification.

2._Termination of the Cross Licence

2.1     With effect from the Commencement Date, the parties hereby agree to that
        the following agreements shall be terminated:

        (A)     the Cross  Licence,  without  application of article 10 of the
                Cross Licence;

        (B)     the Security  Deed of 14 April 1997 between NCTI and Verity,  in
                respect of which the parties hereby agree to lend all reasonable
                assistance  as may be  necessary in order to cancel any relevant
                registrations;

        (C)     the  confirmatory  Patent Licence of 15 April 1997 between NCTI,
                Verity and NXT, in respect of which the parties  hereby agree to
                lend all  reasonable  assistance as may be necessary in order to
                cancel any relevant registrations;

        (D)     the further confirmatory Patent Licence of 15 April 1997 between
                NCTI,  Verity and NXT,  in respect of which the  parties  hereby
                agree to lend all  reasonable  assistance as may be necessary in
                order to cancel any relevant registrations; and

        (E)     the two comfort letters of 15 April 1997 from NXT to NCTI.

2.2     The terminations in clause 2.1 shall be without prejudice to the accrued
        rights of the parties.  Further, article 19.2 of the Cross Licence shall
        survive termination.

3.NCTI Licence

3.1     Subject  to  the  terms  and  conditions  of  this  Agreement  and  in
        consideration of:

        (A)     the grant of the licences under clause 4;

        (B)     the grant of the Master Licence under clause 5.1;

        (C)     the royalties payable under clause 6.1;

        (D)     the  release  of the  obligations  of  NCTI  under  the  Cross
                Licence,  in particular  the  conditional  obligation to repay
                US$3 million;

        (E)     the  cancellation  of the security deed over the Licensed NCTI
                Patents (as defined in the Cross Licence); and

        (F)     the payment of (pound)1 (receipt of which is hereby 
                acknowledged by NCTI)

        NCTI and NAPI hereby grant to NXT an exclusive  worldwide licence to use
        the NCTI Rights to develop,  make, have made, use, distribute,  sell and
        have sold Licensed Products in the NXT Fields together with the right to
        grant sub-licences therefor.

3.2     NCTI and NAPI hereby  jointly and severally  undertake to use their best
        endeavours to discharge the restrictions which prevent it from including
        the rights  described in clause  1.5(B)  within the licence under clause
        3.1.

3.3     NXT shall use  reasonable  endeavours  to exploit the rights  licensed
        under this Agreement.

4._NXT Licence

4.1     Subject  to  the  terms  and  conditions  of  this  Agreement  and  in
        consideration of:

        (A)     the grant of the licence under clause 3.1;

        (B)     the royalties payable under clause 6.2;

        (C)     the  release  of  the  obligations  of  NXT  under  the  Cross
                Licence; and

        (D)   the payment of (pound)1 (receipt of which is hereby acknowledged)

        NXT hereby grants to NAPI an exclusive  worldwide licence to use the JIP
        Rights to develop, make, have made, use, distribute,  sell and have sold
        Licensed  Products in the NCTI Fields  together  with the right to grant
        sub-licences  therefor  but with  respect  to the DERA  Technology  such
        licence shall be non-exclusive and without the right to sub-license.

4.2     NXT also  hereby  grants to NCTI and NAPI a  licence  of such of the JIP
        Rights  (excluding  any rights to the DERA  Technology)  as are strictly
        necessary for NCTI and NAPI to maintain those licences of the JIP Rights
        which were automatically granted to OnActive LLC and Electrolux upon the
        commencement of the Cross Licence and for so long as those  arrangements
        with OnActive LLC and Electrolux remain in force.

5._Master Licence

5.1     Subject  to  the  terms  and   conditions  of  this   Agreement  and  in
        consideration  for the rights  granted  under  clauses 3.1 and 3.2,  NXT
        shall promptly grant NAPI the Master Licence for all fields of use;

5.2     Upon  commencement  of the Master  Licence in clause 5.1, those terms in
        this  Agreement  which are  directly  covered by the terms of the Master
        Licence shall cease to be of further effect.

6._Royalties

6.1     Royalties from NXT

        As part of the  consideration for the rights granted by NCTI and NAPI to
        NXT under clause 3.1, NXT shall pay royalties to NAPI in accordance with
        Schedule C.

6.2     Royalties from NAPI under this Agreement

        As part of the  consideration for the rights granted by NXT under clause
        4, NAPI shall pay royalties to NXT in accordance with Schedule C.

6.3     Payment

        Royalties  payable to NAPI under  clause 6.1 or to NXT under  clause 6.2
        shall be due and payable in U.S.  dollars in  immediately  available New
        York, New York funds within forty-five (45) days after the last business
        day of each March,  June,  September  and December of each calendar year
        during the term of this  Agreement.  All such royalty  payments shall be
        exclusive of VAT or any other sales tax.

6.4     Verification

        If requested  by NAPI in respect of payments  under clause 6.1 or by NXT
        in respect of payments under clause 6.2, NXT and NAPI respectively shall
        direct their  chartered  accountants at their own expense to provide the
        other  party with a  certified  written  royalty  report  (the  "Royalty
        Report") for each calendar year of this Agreement within sixty (60) days
        of the end of each calendar year of this Agreement. Such Royalty Reports
        shall be prepared in accordance with the standard  reporting  procedures
        of such chartered  accountants applied in a consistent manner. A similar
        Royalty  Report  shall be  rendered  and royalty  payment  shall be made
        within sixty (60) days after  termination  of this  Agreement.  Further,
        both  NAPI  and NXT  agree  that  the  other  party  may  inspect  their
        royalty/revenue  records  once a year  upon  thirty  (30)  days  written
        notice, at the other party's own expense.

6.5     Late Payment

        Any  payment  not  made on its due  date  under  clause  6.1 or 6.2 will
        require NXT or NAPI  respectively  to pay interest in order to cover the
        default  at the  rate  of the  then  current  prime  rate  at The  Chase
        Manhattan Bank NA.

7._Disclosure of Information, Data and Know-How

7.1     NCTI and NAPI shall jointly and  severally  disclose to NXT all the NCTI
        Technology  licensed under clause 3.1 within 30 days of the date of this
        Agreement.  NXT shall disclose to NAPI all the NXT  Technology  licensed
        under clause 4.1 within 30 days of this Agreement.

7.2     For the purposes of this  Agreement and the Master  Licence,  NAPI shall
        not be at liberty to disclose the NXT Technology solely by virtue of the
        fact that NAPI may have come into  possession of the NXT Technology as a
        result  of  disclosure  by NCTI to NAPI  under  the  terms of the  Cross
        Licence.

8._Confidentiality

8.1     Treatment

        The NCTI  Technology  licensed  under  clause  3.1,  the NXT  Technology
        licensed  under clause 4.1 and any  information of one party relating to
        marketing  plans,   strategies,   forecasts,   new  products,   software
        documentation,  unpublished financial statements,  budgets, projections,
        licences,  prices,  costs,  customer lists, supplier lists and any other
        material marked in some reasonable manner to indicate it is confidential
        which is disclosed to the other party and also the terms and  conditions
        of this  Agreement  (the  "Confidential  Information")  shall be held in
        confidence and not disclosed by the other party, and shall be subject to
        the following terms:

        (A)     any  Confidential  Information  disclosed  between  the  parties
                hereto  orally  or  visually,  in  order to be  subject  to this
                Agreement,  shall be so identified to the receiving party at the
                time of  disclosure  and,  if not  identified  in writing at the
                time,  confirmed in writing within ten (10) days after such oral
                or visual disclosure;

        (B)     only   those   of  its   officers,   employees,   consultants,
                sub-contractors   and   licensees  who  need  to  receive  the
                Confidential  Information  in order to carry out the  purposes
                of this Agreement  shall have access to such  information  and
                such  access  shall  be  limited  to  only  so  much  of  such
                information  as  is  necessary  for  the  particular  officer,
                employee, consultant,  sub-contractor and licensee to properly
                perform his or her functions;

        (C)     all  officers,  employees,   consultants,   sub-contractors  and
                licensees who shall have access to the Confidential  Information
                shall be under written obligation:

                (1)    to  hold  in  confidence   and  not  disclose  all  the
                       Confidential Information made available to them; and

                (2)    to use the  Confidential  Information only as permitted
                       by the party retaining them;

        (D)     all documents,  drawings,  writings and other  embodiments which
                contain the  Confidential  Information  shall be maintained in a
                prudent manner in a secure fashion separate and apart from other
                information  in its  possession  and shall be removed  therefrom
                only as needed to carry out the purposes of this Agreement; and

        (E)     all documents,  drawings,  writings and other embodiments of the
                Confidential  information  the security or  safekeeping of which
                are  subject  to  governmental  regulations  shall  be  kept  in
                accordance with those regulations.

8.2     Exclusions

        Confidential Information shall not include information that:

        (A)     was at the time of disclosure in the public domain  through no
                fault of the party receiving it;

        (B)     becomes  part of the public  domain  after  disclosure  to the
                party receiving it through no fault of such party;

        (C)     was in the possession of the party receiving it (as evidenced by
                written  records) at the time of disclosure and was not acquired
                directly or indirectly  from the other party,  or a third party,
                as the case may be, under a continuing  obligation of confidence
                of which the party receiving it was aware;

        (D)     was received by the party  receiving it (as evidenced by written
                records)  after the time of  disclosure  hereunder  from a third
                party who did not  require it to be held in  confidence  and who
                did not acquire it directly or  indirectly  from the  disclosing
                party under a continuing  obligation  of confidence of which the
                party receiving it was aware;

        (E)     is  required  by law or the  rules  of any  relevant  Court or
                securities  exchange to be  disclosed,  but only to the extent
                of such required disclosure;  provided,  that a party required
                so  to  disclose   Confidential   Information  shall  use  all
                reasonable  endeavours to notify the disclosing  party of such
                potential  disclosure so that such party may seek a protective
                order or other  remedies to maintain  in  confidence  any such
                Confidential Information;

        (F)     was developed  independently  by the receiving party and without
                the  use of  any  Confidential  Information  received  from  the
                disclosing party under this Agreement; or

        (G)     was or is disclosed  by the  disclosing  party to third  parties
                without  restrictions  on use or disclosure  comparable to those
                contained herein.

9._Term

9.1     This  Agreement  shall  commence  upon the  Commencement  Date and shall
        remain in force until terminated under this clause 9 or clause 10.

9.2     This  Agreement  shall cease to have effect against the other party upon
        the last to expire of the patents licensed to the other party under this
        Agreement (but without prejudice to the terms of the Master Licence).

9.3     The  Agreement  shall  automatically  terminate  upon  clause  9.2 being
        satisfied for both parties.






10._Termination

10.1    NXT may at its sole option terminate this Agreement,  without  prejudice
        to the  continuation  of the  licence  granted to NXT under  clause 3.1,
        immediately  where  either  of  NCTI  or  NAPI  becomes  insolvent,   is
        adjudicated  bankrupt or compounds with or makes any arrangement with or
        makes any general  assignment for the benefit of its creditors or enters
        into liquidation,  whether  compulsorily or voluntarily  (except for the
        purposes  of a  bona  fide  reconstruction  or  amalgamation)  or  has a
        receiver,  administrative  receiver or administrator  (or the equivalent
        under United States or other  relevant local  bankruptcy  law) appointed
        over the  whole or any part of its  undertaking  or  assets or a similar
        occurrence  under any  jurisdiction  affects  NCTI or NAPI or if NCTI or
        NAPI ceases or threatens  to cease or makes any  material  change in its
        business.

10.2    NAPI may at its sole option terminate this Agreement,  without prejudice
        to the  continuation  of the licence  granted to NAPI under  clause 4.1,
        where the events or matters described in clause 10.1 apply to NXT.

11._Effect of Termination

11.1    Except as otherwise  expressly provided herein, on termination of this
        Agreement:

        (A)     all rights and  licences  granted  pursuant to clauses 3 and 4
                shall immediately terminate; and

        (B)     all documents,  drawings,  writings and other embodiments of the
                Confidential Information,  as well as those produced, created or
                derived from the Confidential  Information which incorporate the
                Confidential   Information  and  all  copies  thereof  shall  be
                returned  promptly  to the  disclosing  party of this  Agreement
                without  prejudice to the continuation of the obligations  under
                clause 8.

11.2    After  termination of this Agreement,  NAPI, NXT and all their licensees
        may continue to sell Licensed Products  manufactured  before the date of
        termination.  If their stock of Licensed  Products  is  insufficient  to
        fulfil orders  accepted  before the date of  termination,  then they may
        manufacture  sufficient  quantities of Licensed  Products to fulfil such
        order, provided that:

        (A)     such products are manufactured  within 6 months of termination
                of this Agreement; and

        (B) any applicable royalties are paid in accordance with clause 6.

11.3    Notwithstanding  the  termination  of  this  Agreement,  the  terms  and
        conditions  of  clauses 6 and 8 and the  accrued  rights of the  parties
        shall survive  termination  of this  Agreement and shall  continue to be
        applicable  and govern the parties  with  respect to the subject  matter
        thereof.

12._Force Majeure

12.1    In the  event of  enforced  delay  in the  performance  by any  party of
        obligations under this Agreement due to unforeseeable  causes beyond its
        reasonable control and without its fault or negligence,  including,  but
        not limited to, acts of God, acts of the  government,  acts of the other
        party,  fires,  floods,  strikes,  freight  embargoes,  unusually severe
        weather, or delays of subcontractors or licensees due to such causes (an
        "Event of Force Majeure"),  the time for performance of such obligations
        shall be extended for the period of the enforced  delay;  provided  that
        the party seeking the benefit of the provisions of this paragraph shall,
        within ten (10) days after the  beginning  of any such  enforced  delay,
        have first  notified the party to whom the obligation is owed in writing
        of the causes and  requested an extension for the period of the enforced
        delay and shall use all reasonable endeavours to minimize the effects of
        any Event of Force Majeure.

13._Applicable Law

13.1    The terms and conditions of this Agreement and the  performance  thereof
        shall be governed by and construed in accordance with English law.

14._Conduct

14.1    None of the  parties  nor  their  Affiliates  shall  publicly  do or say
        anything which is detrimental to or otherwise  diminishes the reputation
        or goodwill of the other  parties.  Further,  neither of the parties nor
        their Affiliates shall assist other persons to do the same.

15._Dispute Resolution

15.1    The parties  shall meet as soon as possible to discuss and to attempt to
        resolve all matters not  specifically  provided for in the Agreement and
        which  requires  a  decision  including  all  differences,  disputes  or
        disagreements  which  may  arise  out  of or  in  connection  with  this
        Agreement.  If the  parties  are  unable to resolve  any such  matter or
        dispute  then  it  shall  be  referred  to the  Chairman  of NXT and the
        Chairman  (or  equivalent  officer) of NAPI,  who shall meet within five
        days of being  requested  to do so and in good faith  attempt to resolve
        the matter of dispute.

15.2    The parties agree to refer any matter or dispute which is not able to be
        resolved  pursuant to clause  15.1 to the Centre for Dispute  Resolution
        ("CEDR")  in  London,  England  in an attempt to settle the same in good
        faith by Alternate Dispute Resolution ("ADR").

15.3    None of the  parties  shall be deemed to be  precluded  from taking such
        interim  formal  steps as may be  considered  necessary  to protect such
        party's  position while the  procedures  referred to in clauses 15.1 and
        15.2 are pursued.

15.4    In the event that the matter  remains  unresolved  by such ADR procedure
        within thirty days of commencement  of such procedure,  then the parties
        shall be at liberty to take such other Proceedings (as defined below) as
        they think fit.

15.5    Except as provided for in clauses 15.1,  15.2,  and 15.3, in relation to
        any legal action or proceedings to enforce this Agreement (including the
        licences  granted  herein)  or  arising  out  of or in  connection  this
        Agreement  ("Proceedings"),  NCTI and  NAPI  irrevocably  submit  to the
        exclusive  jurisdiction of the English Courts and waive any objection to
        Proceedings  in such  Courts on the  grounds of venue or on the  grounds
        that  Proceedings  have been  brought in an  inappropriate  forum.  This
        clause  operates for the sole benefit of Verity and NXT who shall retain
        the right to take Proceedings in any other jurisdiction.

16._Announcements

16.1    Except  for  any  disclosure  which  may  be  required  by law or by any
        securities   exchange  or   regulatory  or   governmental   body  having
        jurisdiction  over  it,  wherever   situated  (and  including,   without
        limitation,  the  London  Stock  Exchange,  the Panel on  Takeovers  and
        Mergers,   the  Serious  Fraud  Office  and  the   Securities   Exchange
        Commission),  and whether or not the  requirement  has the force of law,
        none of the  parties may use any of the  others'  names or disclose  the
        terms of this  Agreement  without the  consent of all the others,  which
        consent shall not be unreasonably withheld or delayed.

17._Severability

17.1    If any part of this  Agreement for any reason shall be declared  invalid
        or  unenforceable,  such  decision  shall not  affect  the  validity  or
        enforceability  of any  remaining  portion,  which shall  remain in full
        force and effect;  provided,  however,  that in the event a part of this
        Agreement is declared  invalid and the invalidity or  enforceability  of
        such part has the effect of materially  altering the  obligations of any
        party  under this  Agreement,  the  parties  agree,  promptly  upon such
        declaration  being  made,  to  negotiate  in good  faith to  amend  this
        Agreement so as to put such party in a position substantially similar to
        the position such party was in prior to such declaration.

18._Rights of Assignment; Successors and Assigns

18.1    None of the parties may assign any of their rights under this  Agreement
        without  the  prior  written  consent  of the other  parties  (not to be
        unreasonably  withheld or delayed).  However, NAPI may assign its rights
        and  obligations  under this  Agreement to an  Affiliate  (which for the
        purpose of this clause  shall not include  OnActive)  upon giving NXT 30
        days' written notice. Further, NXT may assign its rights and obligations
        under this  Agreement to an Affiliate  upon giving NAPI 30 days' written
        notice.

19._Notices

19.1    Any notices under this Agreement shall be in writing and shall be deemed
        delivered if delivered by personal  service,  or sent by fax or by first
        class  registered or certified  mail,  or same day or overnight  courier
        service with postage or charges prepaid. Unless subsequently notified in
        writing in accordance with this clause by the other party, any notice or
        communication hereunder shall be addressed to NCTI o NAPI as follows:

        Michael J. Parrella, President
        Noise Cancellation Technologies, Inc./NAPI
        1025 West Nursery Road
        Linthicum, Maryland 21090
        Fax No: 001 - (410) 636-5989

        to Verity or NXT as follows:

        Farad Azima, Chairman
        Verity Group plc/New Transducers Limited
        Stonehill
        Huntingdon PE18 6ED England
        Fax No: (011-44) 1480-432777

20._Taxes

20.1    Each  of  the  parties  shall  be  responsible   for  any  sales,   use,
        occupational or privilege taxes,  duties,  fees or other similar charges
        imposed  by  any   governmental   authority  in   connection   with  the
        manufacture,  sale, lease, distribution,  use or other disposition by it
        of  products  or the  exercise  of any other  rights  under the  licence
        granted to it under this Agreement. Any other taxes, including income or
        withholding  taxes based on royalties and other  payments  received by a
        party hereto, shall be the responsibility of that party.

21._Maintenance and Defence of Licensed Patents

        NCTI Obligations

21.1    During  the term of this  Agreement,  NCTI and NAPI  shall  jointly  and
        severally maintain in force the NCTI Patents.  In this connection,  NCTI
        and NAPI  shall  promptly  pay all  costs of any and all  continuations,
        continuations-in-part, divisions, extensions, reissues, re-examinations,
        or renewals of the NCTI  Patents,  including,  without  limitation,  the
        costs  and  expenses  of  any  and  all  attorneys,   experts  or  other
        professionals engaged in connection with any of the foregoing. At NCTI's
        expense,  NXT shall comply with all reasonable requests of NCTI aimed at
        maintaining in force the NCTI Patents.

21.2    Neither NCTI nor NAPI shall assign to any person any of the NCTI Patents
        without  the prior  written  consent of NXT which shall be given on such
        terms as NXT  reasonably  believes are necessary to protect its position
        under this Agreement.

21.3    Neither NCTI nor NAPI shall  abandon or withdraw any of the NCTI Patents
        nor  permit  any of them to lapse  without  giving  NXT no less than two
        months'  written  notice of its  intention  to do so. If during this two
        month period NXT informs NCTI (or ,where relevant,  NAPI) that it wishes
        to maintain the relevant patent,  then NCTI (or ,where  relevant,  NAPI)
        shall assign it to NXT for nominal consideration.

21.4    Where an  actual  or  threatened  infringement  of the NCTI  Patents  or
        unauthorised disclosure or use of the NCTI Technology  (collectively the
        "Infringement") falls or appears to fall wholly or partly within the NXT
        Fields,  then the  party who  becomes  aware of the  Infringement  shall
        promptly report the same to the others.  If the Infringement  appears to
        NCTI (or ,where  relevant,  NAPI) to fall within the NXT Fields (whether
        entirely or partly),  then NCTI and NAPI shall  assist NXT in any action
        which NXT wishes to take in  relation to the  Infringement,  but only by
        lending its name to such action (subject to NXT fully  indemnifying NCTI
        and NAPI against all costs, damages and other liabilities arising out of
        or in  connection  with  such  action)  and by  providing  copies of all
        relevant files in its custody, power, possession or control. Any further
        assistance  required  by NXT shall be subject to  agreement  between the
        parties.  NXT shall,  subject to such indemnity,  be entitled as against
        NCTI and NAPI to retain all costs, damages and sums awarded or agreed to
        be paid to it in connection with such action and shall have sole conduct
        of such action.  NXT shall however regularly inform NCTI and NAPI of any
        significant  developments  of such  action and shall not  consent to any
        order as to the  amendment or validity of the NCTI  Patents  without the
        prior written consent of NCTI (or, where relevant, NAPI).






        NXT Obligations

21.5    Throughout the term of this  Agreement,  NXT shall maintain in force the
        NXT Patents. In this connection, NXT shall promptly pay all costs of any
        and all  continuations,  continuations-in-part,  divisions,  extensions,
        reissues,  re-examinations,  or renewals of the NXT Patents,  including,
        without  limitation,  the costs and  expenses of any and all  attorneys,
        experts or other  professionals  engaged in  connection  with any of the
        foregoing.  At  NXT's  expense,  NCTI  and NAPI  shall  comply  with all
        reasonable  requests  of NXT  aimed  at  maintaining  in  force  the NXT
        Patents.

21.6    NXT shall not assign to any person any of the NXT  Patents  without  the
        prior written consent of NAPI which shall be given on such terms as NAPI
        reasonably  believes are  necessary  to protect its position  under this
        Agreement.

21.7    NXT shall not abandon or withdraw  any of the NXT Patents nor permit any
        of them to lapse  without  giving NAPI no less than two months'  written
        notice of its  intention  to do so. If during this two month period NAPI
        informs NXT that it wishes to maintain  the  relevant  patent,  then NXT
        shall assign it to NAPI for nominal consideration.

21.8    Where  an  actual  or  threatened  infringement  of the NXT  Patents  or
        unauthorised  disclosure or use of the NXT Technology  (collectively the
        "Infringement")  falls or  appears to fall  wholly or partly  within the
        NCTI Fields,  then the party who becomes aware of the Infringement shall
        promptly report the same to the others.  If the Infringement  appears to
        NXT to fall solely  within the NCTI  Fields,  then NXT shall assist NCTI
        and NAPI in any action  which NCTI and NAPI wish to take in  relation to
        the  Infringement,  but only by lending its name to such action (subject
        to NCTI and NAPI fully  indemnifying  NXT on a joint and  several  basis
        against all costs,  damages and other  liabilities  arising out of or in
        connection  with such  action) and by  providing  copies of all relevant
        files  in  its  custody,  power,  possession  or  control.  Any  further
        assistance  required  by NCTI and NAPI  shall be  subject  to  agreement
        between the parties. NCTI and NAPI shall, subject to such indemnity,  be
        entitled as against NXT to retain all costs, damages and sums awarded or
        agreed to be paid to it in  connection  with such  action and shall have
        sole  conduct  of such  action.  NCTI and NAPI shall  however  regularly
        inform NXT of any significant  developments of such action and shall not
        consent to any order as to the  amendment or validity of the NXT Patents
        without NXT's prior written consent.

22._Warranties

22.1    NCTI and NAPI jointly and severally represent and warrant to NXT that:

        (A)     each of them has the right,  power and  authority  to enter into
                this  Agreement  and to grant  the  licenses  and  other  rights
                contained herein;

        (B)     neither of them will breach or be in violation of any agreement,
                licence,  or grant made with or to any other  party by virtue of
                entering into this Agreement;

        (C)     so far as each of them are  aware,  use of the NCTI  Rights as
                permitted  by this  Agreement  will not infringe the rights of
                any other person; and

        (D)     the  patents  listed  in  Schedule  A  constitute  all the  NCTI
                Patents.



22.2    NXT represents and warrants to NAPI that:

        (A)     it has the  right,  power  and  authority  to enter  into this
                Agreement   and  to  grant  the   licenses  and  other  rights
                contained herein;

        (B)     it will not breach or be in violation of any agreement, licence,
                or grant made with or to any other  party by virtue of  entering
                into this Agreement; and

        (C)     so far as NXT is aware,  use of the NXT Rights as  permitted  by
                this Agreement will not infringe the rights of any other person.

        (D)     the patents listed in Schedule B constitute all the NXT Patents.

23._Disclaimer

23.1    Except as specifically set forth in this Agreement, NCTI and NAPI hereby
        disclaim:

        (A)     any express or implied  warranty of the  accuracy,  reliability,
                technological   or  commercial   value,   comprehensiveness   or
                merchantability  of the NCTI  Rights or  Licensed  Products,  or
                their suitability or fitness for any purpose whatsoever; and

        (C)     all  liability  for any loss or damage  resulting,  directly  or
                indirectly, from the use of the NCTI Rights or Licensed Products
                including  consequential  damages, loss of profits or good will,
                expenses  for  downtime or for making up  downtime,  damages for
                which  licensee  may be  liable  to other  persons,  damages  to
                property.

23.2    Except as  specifically  set  forth in this  Agreement,  Verity  and NXT
        hereby disclaims:

        (A)     any express or implied  warranty of the  accuracy,  reliability,
                technological   or  commercial   value,   comprehensiveness   or
                merchantability of the NXT Rights or Licensed Products, or their
                suitability or fitness for any purpose whatsoever; and

        (C)     all  liability  for any loss or damage  resulting,  directly  or
                indirectly,  from the use of the NXT Rights or Licensed Products
                including  consequential  damages, loss of profits or good will,
                expenses  for  downtime or for making up  downtime,  damages for
                which  licensee  may be  liable  to other  persons,  damages  to
                property.

24._Trade Marks and IP Notices

24.1    Nothing in this  Agreement  shall  entitle any of the parties to use any
        trade or service mark (including logos, devices and signs) which is used
        by another party or its Affiliates (the "Marks").  Further,  none of the
        parties shall use or apply for  registration as a trade mark or business
        name of any word or words,  device,  logo or sign which is  identical or
        confusingly similar to any of the Marks.

24.2    Each party  shall  comply  with the other  party's  reasonable  requests
        regarding the marking of Licensed Products  (including any packaging and
        promotional  materials)  with such notices  regarding  the  intellectual
        property rights relevant to such Licensed Products as may be appropriate
        in each jurisdiction.

25._No Agency and No Partnership

25.1    Save as otherwise  expressly  provided  for in this  Agreement or unless
        otherwise  agreed  between the  parties in writing,  none of the parties
        shall:

        (A)     make  purchases or sales or incur any  liabilities  whatsoever
                on behalf of any of the others; or

        (B)     pledge a credit of any of the others; or

        (C)     hold itself out as acting as agent for any of the others.

25.2    Nothing  in this  Agreement  is  intended  to or shall  give rise to any
        relationship   of  partnership  or  profit  sharing  in  the  nature  of
        partnership between the parties.

26._Scope of the Agreement and General Obligations

26.1    This Agreement constitutes the entire agreement between the parties with
        respect to the subject  matter hereof and  supersedes  all prior oral or
        written  agreements or  understandings of the parties with regard to the
        subject matter hereof including,  without limitation, the Cross Licence.
        No interpretation, change, termination or waiver of any provision hereof
        shall be binding  upon a party  unless in writing  and  executed  by the
        other party. No modification, waiver, termination,  recession, discharge
        or  cancellation of any right or claim under this Agreement shall affect
        the  right of any  party  hereto to  enforce  any  other  claim or right
        hereunder.

27._Recording of Formal Licence

27.1    Following  commencement of this  Agreement,  each party shall render all
        assistance as may be reasonably required (including, without limitation,
        the signing of short form  licences) in order to register any party with
        a licence under this Agreement with any relevant Patent Office.  For the
        avoidance of doubt, such short form licences shall not alter the meaning
        or effect of this Agreement.

28._Stamp Duty and Legal Costs

28.1    All stamp  duty  payable in  relation  to this  Agreement  and any other
        agreement executed pursuant to it shall be paid by NAPI.

29._Guarantee

29.1    NCTI hereby agrees to guarantee  performance  of all the  obligations of
        NAPI under this Agreement until the later of:

        (A)     NAPI achieving a net worth of US$10 million or more; or

        (B) two years elapsing from the date of this Agreement.

30._Opinions

30.1    As soon as practicable after the Commencement Date:

        (A)     NCTI and NAPI shall  deliver  the  Horton  Opinion to NXT in a
                form satisfactory to NXT; and

        (B)     Verity and NXT shall  deliver the  Simmons & Simmons  Opinion to
                NAPI in a form satisfactory to NAPI.






IN WITNESS WHEREOF the parties have caused this Agreement to be executed the day
and year first before written.

VERITY GROUP plc
/s/ FARAD AZIMA
By:     Farad Azima
Title:  Director
Date:   September 27, 1997

NEW TRANSDUCERS LIMITED
/s/ PETER THOMS
By:     Peter Thoms
Title:  Director
Date:   September 27, 1997

NOISE CANCELLATION TECHNOLOGIES, INC.
/s/ MICHAEL J. PARRELLA
By:     Michael J. Parrella
Title:  President
Date:   September 27, 1997

NCT AUDIO PRODUCTS, INC
/s/ MICHAEL J. PARRELLA
By:     Michael J. Parrella
Title:  President
Date:   September 27, 1997





                                                                      Schedule A

                           NCTI INTELLECTUAL PROPERTY

VIRGINIA POLYTECHNIC INSTITUTE

Patents

US              4,715,559  Issued  December 29, 1987,  entitled  "Apparatus  and
                Method  for  Global  Noise  Reduction".  Describes  a method for
                quieting  within an enclosed space by  anti-vibrating  the walls
                with piezo-electric devices. It formed the basis for NCTI's work
                on active panels.

US 5,335,417    Issued October 11, 1992,  entitled "Active Control of Aircraft
                Engine   Inlet  Noise   Using   Compact   Sound   Sources  and
                Distributed  Error  Sensors".  Part of this  patent  describes
                the use of piezo actuators  bonded to curved panels as a means
                of  generating   sound.   The  panel  geometry  is  chosen  to
                emphasize  particular  frequencies.  This technique is used in
                transformer quieting.

US              5,515,444 Issued May 7, 1996.  Continuation of US 5,335,417,  in
                which the curved panel is dynamically  tuned to maintain optimal
                performance.







                                                                      Schedule A

                           NCTI INTELLECTUAL PROPERTY

PIEZO TECHNOLOGY

Patents

US              5,473,214 Issued December 5, 1995,  entitled "Low Voltage Bender
                Piezo Actuators". The use of a stack of piezo electric layers to
                produce a vibration actuator. Multiple layers reduce the voltage
                levels  required  to drive the  actuator.  This makes  packaging
                easier and allows cheaper amplifiers to be used.1

Patents Pending

                PCT/US94/04553  (filed May 04, 1994)  Publication No. W004/27331
                Low Voltage Bender Piezo Actuators.  The use of a stack of piezo
                electric layers to produce a vibration actuator. Multiple layers
                reduce the voltage levels  required to drive the actuator.  This
                makes packaging easier and allows cheaper  amplifications  to be
                used.

                EPO 94914908.2  (filed May 04, 1994) Publication No. 0698298 Low
                Voltage  Bender  Piezo  Actuators.  The use of a stack  of piezo
                electric layers to produce a vibration actuator. Multiple layers
                reduce the voltage levels  required to drive the actuator.  This
                makes packaging easier and allows cheaper  amplifications  to be
                used.





                                                                      Schedule A

                           NCTI INTELLECTUAL PROPERTY


PIEZO TECHNOLOGY

Patents pending


        (253)   No.  PCT/US95/05720  (filed 09/05/95) Publication No. W095/31805
                Multimedia  Personal  Computer  with Active Noise  Reduction and
                Piezo  Speakers:  US filed May 11, 1994. A piezo patch is bonded
                to the case of a PC so that the whole case acts as  loudspeaker.
                Active Noise  Reduction  and  microphones  are included to fully
                equip the PC for multimedia applications.

                EPO  95918420.1  (filed May 09, 1995)  Publication  No.  0760996
                Multimedia  Personal  Computer  with Active Noise  Reduction and
                Piezo  Speakers:  A piezo patch is bonded to the case of a PC so
                that the whole case acts as loudspeaker.  Active Noise Reduction
                and   microphones  are  included  to  fully  equip  the  PC  for
                multimedia applications.

                US 08/241440
                Multimedia  Personal  Computer  with Active Noise  Reduction and
                Piezo  Speakers:  US filed May 11, 1994. A piezo patch is bonded
                to the case of a PC so that the whole case acts as  loudspeaker.
                Active Noise  Reduction  and  microphones  are included to fully
                equip the PC for multimedia applications.

        (256)   No. PCT/US95/08131 (filed 29/06/95) Publication No. W096/01547
                Piezo  Speaker  and  Installation  Method for Laptop  Personal
                Computer and other Multimedia  Applications:  US filed July 6,
                1994.  A piezo patch is bonded to the case of a PC to act as a
                loudspeaker.  Dampening  materials  and  stiffeners to improve
                the  performance  of a piezo  loudspeaker.  (U.S.  application
                approved for issue).



                EPO  95924733.9  (filed June 29, 1995)  Publication  No. 0772953
                Piezo  Speaker  and  Installation  Method  for  Laptop  Personal
                Computer  and other  Multimedia  Applications:  A piezo patch is
                bonded  to the case of a PC to act as a  loudspeaker.  Dampening
                materials and  stiffeners to improve the  performance of a piezo
                loudspeaker.

                US 08/267218
                Piezo  Speaker  and  Installation  Method for Laptop  Personal
                Computer and other Multimedia  Applications:  US filed July 6,
                1994.  A piezo patch is bonded to the case of a PC to act as a
                loudspeaker.  Dampening  materials  and  stiffeners to improve
                the  performance  of a piezo  loudspeaker.  (U.S.  application
                approved for issue).

        (260)   US 08/533048
                Piezo Speaker for Improved  Passenger  Cabin Audio  Systems:  US
                filed September 25, 1995.  Improvements  include the addition of
                combined  constrained   damping/insulation   layer,   integrated
                electronics and the inclusion of intermediate coupling plates to
                enhance  performance.  This  technique  is  applied  to all flat
                interior surfaces of a car interior.

                PCT to be advised
                Piezo Speaker for Improved  Passenger  Cabin Audio  Systems:  US
                filed September 25, 1995.  Improvements  include the addition of
                combined  constrained   damping/insulation   layer,   integrated
                electronics and the inclusion of intermediate coupling plates to
                enhance  performance.  This  technique  is  applied  to all flat
                interior surfaces of a car interior.

        (269)   US 08/554049
                Piezoelectric  Transducers:  US filed  November  6,  1995.  An
                extension of (260).  Improved transducer coupling systems that
                significantly improves piezo performance.

                PCT to be advised
                Piezoelectric  Transducers:  US filed  November  6,  1995.  An
                extension of (260).  Improved transducer coupling systems that
                significantly improves piezo performance.

                                                                      Schedule A

                           NCTI INTELLECTUAL PROPERTY


FLAT PANEL TRANSDUCERS

Patents Pending

        (277)   US 08/720163  Vehicular  Loudspeaker  System: US filed September
                25, 1996. An improved loudspeaker system for a passenger vehicle
                such as an automobile. The system comprises a transducer capable
                of being excited by applied  electric  potential and  electronic
                means that is electrically  connected to the transducer to apply
                electric potential thereto.  The diaphragm driven by the excited
                transducer is comprised of the headliner of the vehicle or other
                flat surfaces.

        (400)   No. GB 961 9835.3 (filed 23/09/96)
                Audio System Using Flat Panel  Loudspeakers:  UK filed September
                23, 1996. A home entertainment  system consisting of a plurality
                of  flat  panel  loudspeakers  and  electroacoustics  transducer
                apparatus  having a flatter  frequency  response than previously
                possible.

        (401)   No. GB 961 9967.4 (filed 25/09/96)
                Electroacoustics  Transducer Arrangement: UK filed September 25,
                1996.  An  electroacoustics  transducer  consisting of two panel
                membranes.  The phase of the  sound  wave  produced  at the rear
                panel  is set so  that  if  that  wave  is  reflected,  it  will
                constructively  interfere  with the wave produced at the forward
                panel.

        (402)   No. GB 962 1523.1 (filed 16/10/96)
                A Flat Panel  Loudspeaker  Arrangement  and Hands Free Telephone
                System Using the Same:  UK filed  October 16, 1996. A flat panel
                loudspeaker  arrangement  which can be  attached  to the roof or
                headlining of a vehicle to position the  loudspeaker  of a hands
                free telephone more conveniently.

        (403)   No. GB 962 5315.8 (filed 05/12/96)
                Electroacoustics  Transducer  Arrangement:  UK filed December 5,
                1996.  (An  extension of 401).  An  electroacoustics  transducer
                consisting of two panel  membranes.  The phase of the sound wave
                produced  at the  rear  panel  is set so that  if  that  wave is
                reflected,  it  will  constructively  interfere  with  the  wave
                produced at the forward  panel.  The  constructive  interference
                effect  can also be used to flatten or  equalise  the  frequency
                response of the system.

        (404)   No. GB 962 4302.7 (filed 22/11/96)
                Flat Panel Loudspeaker Arrangement:  UK filed November 22, 1996.
                Involves the selection and arrangement of piezoelectric elements
                so that  the  piezoelectric  elements  provide  the  flat  panel
                loudspeaker with an equalised frequency response.

        (405)   No. GB 962 6439.5 (filed 20/12/96)
                A Multiple Panel Electroacoustic  Transducer:  UK filed December
                20,  1996.  An improved  electroacoustic  transducer  comprising
                multiple parallel panel members with an actuator arrangement for
                driving the panel members in phase.

        (406)   No. GB 970 0336.2 (filed 09/01/97)
                Panel Mounting  Arrangement for Electroacoustic  Transducer:  UK
                filed  January 9, 1997. An improved  electroacoustic  transducer
                that  isolates  acoustic  vibrations  generated by the front and
                rear faces of a panel so that they do not interfere.






                                                                      Schedule A

                          NCTI INTELLECTUAL TECHNOLOGY

LOUDSPEAKER TECHNOLOGY

Patents Pending

        (121)   PCT/US91/02731 Publication No. W092/19080
                Improvements in and relating to Transmission  Line  Loudspeakers
                Filed April 19,  1991.  The sound wave  radiated  from the front
                surface  of  a  loudspeaker  driver  diaphragm  is  of  opposite
                polarity with respect to that radiated from the back surface. If
                the two signals are directly combined,  they will tend to cancel
                one  another.  An acoustic  phase  inversion  network is used to
                insure that the back wave is in phase with the front  wave,  and
                the  combined   signals  are  used  to  drive  the  inlet  of  a
                loudspeaker transmission line.

                EPO 91920600.3 Publication No. 0580579
                Improvements in and relating to Transmission  Line  Loudspeakers
                Filed April 19,  1991.  The sound wave  radiated  from the front
                surface  of  a  loudspeaker  driver  diaphragm  is  of  opposite
                polarity with respect to that radiated from the back surface. If
                the two signals are directly combined,  they will tend to cancel
                one  another.  An acoustic  phase  inversion  network is used to
                insure that the back wave is in phase with the front  wave,  and
                the  combined   signals  are  used  to  drive  the  inlet  of  a
                loudspeaker transmission line.

        (149)   No. PCT/US91/07324 Publication No. W093/07729
                Vacuum Speaker
                Filed  October 2,  1991.  A speaker  enclosure  with a partial
                vacuum  behind  the  speaker.  A spring is used to offset  the
                static forces.  The result is a smaller  enclosed volume while
                maintaining low frequency performance.

        (???)   No. PCT/US92/05771 Publication No. WO94/01979
                Hydraulic Powered Loudspeaker
                A  hydraulic  powered  low-damped   loudspeaker   including  a
                hydraulic  cylinder  (21)  attached  to  the  cone  (22)  of a
                speaker which can be used in a bandpass loudspeaker.





Patent

UK              2,858,759  Issued  March  11,  1981,  entitled  "Depressing  the
                Resonant  Frequency of a Suspended  Mass".  Described the use of
                active  control  to  reduce  the  spring  force  constant  of  a
                suspended  mass (e.g.  a  loudspeaker  cone) so as to reduce the
                effective resonant frequency of the structure.
US              3,247,925  Issued  April  26,  1966,   entitled   "Loudspeaker".
                Described  the  improvement  of the  efficiency of low frequency
                loudspeakers by exciting bending waves in a light weight,  stiff
                panel  which  remains  essentially  stationary,  except  for the
                bending waves.







confidential                                                          Schedule B

Appn. No.                      Date Filed    Short Title

1.      PCT/GB96/02145 02/09/96       Acoustic Device
2.      U.S. 08/707.012        03/09/96      Acoustic Device
3.      PCT/GB96/02140 02/09/96       Baffle Loaded Loudspeakers
4.      PCT/GB96/02166 02/09/96       Mixed Technology Loudspeaker
5.      PCT/GB96/02167 02/09/96       Inertial Transducer (electro-magnetic)
6.      PCT/GB96/02160 02/09/96       Inertial Transducer (piezo)
7.      PCT/GB96/02148 02/09/96       Bender Transducers
8.      PCT/GB96/02162 02/09/96       Loudspeaker with Separate Transducers
9.      PCT/GB96/02163 02/09/96       Loudspeaker/Microphone Combination
10.     PCT/GB96/02158 02/09/96       Mixed Technology Loudspeakers
11.     PCT/GB96/02155 02/09/96       Microphone
12.     PCT/GB96/02153 02/09/96       Ceiling Tile
13.     PCT/GB96/02151 02/09/96       Visual Display Unit
14.     PCT/GB96/02142 02/09/96       Laptop Computer
15.     PCT/GB96/02147 02/09/96       Portable CD Player
16.     PCT/GB96/02157 02/09/96       Automotive etc.  Applications  including
                                             Seat Shell  Loudspeaker  and Door
                                             Mounted    and    Parcel    Shelf
                                             Loudspeakers
17.     PCT/GB96/02164 02/09/96       Keyboard Musical Instrument
18.     PCT/GB96/02159 02/09/96       Vending Machine
19.     PCT/GB96/02165 02/09/96       Notice Board
20.     PCT/GB96/02146 02/09/96       Packaging
21.     PCT/GB96/02144 02/09/96       Greetings Card
22.     PCT/GB96/02137 02/09/96       Projection Screen Loudspeaker







                                                                      Schedule C


                                    Royalties

1.1     Royalties payable by NAPI to NXT:

        (A)     2% of Net Sales  Revenue but not less than $0.10 per  Licensed
                Product; and

        (B)     6% of Net Licensing Revenue*.

1.2     Royalties payable by NXT to NAPI:

        (A)     2% of Net Sales  Revenue but not less than $0.10 per  Licensed
                Product; and

        (B)     6% of Net Licensing Revenue.

- -----------

* NAPI shall treat  profits of OnActive  LLC  attributable  to  NAPI/NCTI as Net
Licensing Revenues in calculating royalties payable to NXT.






                                                                      Schedule D


                                   Affiliates


                             OnActive L.L.C. - 42.5%