Exhibit 10
                                LICENSE AGREEMENT

License  Agreement  made this 15th day of July,  1998 by and between NCT Hearing
Products,  Inc., a Delaware  corporation with offices at 1025 West Nursery Road,
Linthicum,  Maryland 21090,  USA,  hereinafter  referred to as ("Licensee")  and
Noise Cancellation  Technologies,  Inc., a Delaware  corporation with offices at
1025 West Nursery Road, Linthicum, Maryland 21090, USA, ("NCT").

WHEREAS  Licensee  is  engaged  in  the  design,  development,  manufacture  and
marketing of headset,  headphone and other hearing  products for various markets
around the world; and

WHEREAS NCT is engaged in the  development of Active Wave Management and related
technologies that have been applied to various fields and industries, and is the
owner of certain United States and foreign patents  covering  various aspects of
such  technologies,  which  both  parties  believe  can be  applied  to  hearing
products; and

WHEREAS  Licensee is desirous of  obtaining  an  exclusive  license  from NCT to
develop, make, use, and sell hearing products incorporating NCT technology;

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:

ARTICLE 1.  DEFINITIONS
As used herein, the terms described below have the following meanings.

1.1   "Affiliate"  shall mean any legal entity which directly or indirectly,  is
      controlled  by, is in control of, or under  common  control with the legal
      entity with reference to which the term "Affiliate" is used.

1.2   "Confidential Information" shall mean the information described in Article
      5  below  and  shall  include  any and all  samples,  models,  prototypes,
      drawings,   specifications,   formulas,  algorithms,  software,  operating
      techniques,  processes,  data, technical and other information,  including
      any information relating to the status of research or other investigations
      being conducted, whether given in writing, orally, or in magnetic or other
      electronic  processing form to the extent that such  information is not in
      the public domain through other than a breach of this Agreement.

1.3   "Improvement" shall mean any improvement, further invention,  enhancement,
      derivative  product,  technology,  software,  firmware,  mask work,  trade
      secret,  know-how,   patent,  patent  application  or  other  intellectual
      property  making use of,  extending,  based upon or  relating  to: (a) the
      Licensed  Patents or other NCT patents,  the Licensed  Technology or other
      NCT technology or any combination thereof (hereinafter "NCT Improvements")
      or (b) Licensee Technology (hereinafter "Licensee  Improvements") provided
      however, that no Sponsor Technology shall be deemed an Improvement.

1.4   The uncapitalized  term "know-how",  in general,  shall have its usual and
      accepted  meaning,   that  is,  inter  alia,  all  factual  knowledge  and
      information not capable of precise,  separate description but which, in an
      accumulated  form,  after being acquired as the result of trial and error,
      gives to the one  acquiring it an ability to produce and market  something
      which one  otherwise  would not have known how to produce  and market with
      the same accuracy or precision necessary for commercial success.

1.5   "Licensed  Patents"  shall mean all those patents and patent  applications
      owned by or licensed to NCT  described in Exhibit A hereto and licensed to
      Licensee   under   Article   2   below   including   any    continuations,
      continuations-in-part, divisions, extensions, reissues, re-examinations or
      renewals of any of the foregoing.

1.6   "Licensed  Product"  shall  mean a  specific  hearing  product  embodying,
      employing,  based on or derived from all or part of the  Licensed  Patents
      and/or the Licensed Technology.

1.7   "Licensed  Technology"  shall mean that unpatented  technology owned by or
      licensed  to NCT  described  in Exhibit B hereto and  licensed to Licensee
      under Article 2 below.

1.8   "Licensee   Technology"  shall  mean  any  and  all  existing  and  future
      technology,  now or hereinafter owned or licensed by or to Licensee and/or
      its  Affiliates  (other than  Licensed  Patents and Licensed  Technology),
      including  without  limitation  all  know-how,  trade  secrets,   methods,
      operating  techniques,  processes,  software,  materials,  technical data,
      engineering information, formulas, specifications, drawings, machinery and
      apparatus, patents, patent applications, copyrights and other intellectual
      property relating thereto.

1.9   "Market"  shall  mean  the  worldwide  market  for  hearing  products  but
      excluding those markets,  if any, licensed to others on an exclusive basis
      by NCT prior to the date hereof.
1.10  "NCT  Technology  License" shall mean the license to the Licensed  Patents
      and the Licensed  Technology granted by NCT to Licensee under Article 2 of
      this Agreement.

1.11  "Net  Revenues"  means the actual  revenues  received by Licensee from its
      sale,  lease or  distribution  of Licensed  Products minus  allowances for
      commissions and trade discounts.

1.12  "Sponsor  Technology"  shall mean with  respect to a party  hereto (i) all
      existing and future  technology  owned or licensed by or to a party and/or
      its Affiliates which, by virtue of contract  restrictions  binding on such
      party, cannot be disclosed or transferred to the other party hereto on the
      same terms and conditions as Licensed  Technology or Licensee  Technology,
      as the case may be;  and (ii) all  existing  and future  technology  which
      results from the  combination of a party's  technology and a third party's
      technology,  and which by virtue of contract  restrictions  binding on the
      party in question,  cannot be disclosed or  transferred to the other party
      hereto on the same terms and conditions as Licensed Technology or Licensee
      Technology, as the case may be.

1.13  "Technical  Information" shall mean technical,  design,  engineering,  and
      manufacturing information and data pertaining to the design,  manufacture,
      commercial production and distribution of Licensed Products and components
      and parts thereof in the form of designs,  prints,  plans, material lists,
      drawings, specifications,  instructions,  reports, records, manuals, other
      written materials, computer programs and software and other forms or media
      relating thereto.

1.14  The uncapitalized term "technology",  in general, shall have its usual and
      accepted meaning and shall include without limitation all know-how,  trade
      secrets, methods, operating techniques,  processes,  software,  materials,
      technical  data,  engineering   information,   formulas,   specifications,
      drawings,   machinery  and  apparatus,   patents,   patent   applications,
      copyrights and other intellectual property relating thereto.

1.15  "Third  Party  Rights"  shall  mean  rights  in, to or under the  Licensed
      Patents and the  Licensed  Technology  heretofore  granted by NCT to third
      parties and the rights thereto of their respective permitted sublicensees,
      assigns and successors.

ARTICLE 2. The NCT Technology LICENSE
2.1   License  to NCT  Patents  and NCT  Technology.  Subject  to the  terms and
      conditions of this  Agreement,  NCT hereby grants to Licensee a license to
      make,  have made,  use,  sell and/or  have sold  Licensed  Products  which
      incorporate  or embody,  or are covered or claimed by, or are based on one
      or more of the Licensed Patents and/or Licensed Technology.

2.2   Limitations.  The NCT Technology License shall be exclusive as against all
      others  for the  manufacture,  use and sale of  Licensed  Products  in the
      Market  throughout  the World  subject  to the Third  Party  Rights.  Said
      License  is  limited  to: (a) the  manufacture,  use and sale of  Licensed
      Products  and (b) the Market and NCT  retains  the  unrestricted  right to
      manufacture, use and sell Licensed Products and to license others to do so
      provided,  that neither NCT nor any such licensee  shall have any right to
      sell  Licensed  Products  in the  Market.  NCT also  retains  the right to
      manufacture,  use and sell products  other than  Licensed  Products in the
      Market and to license others to do so.

2.3   Sublicensing.   The  rights  and  licenses   granted   hereunder   may  be
      sublicensed,  by Licensee to any third party provided any such  sublicense
      prohibits further sublicensing without NCT's prior written consent in each
      instance.  Licensee  also shall have the right to have  Licensed  Products
      manufactured  for it by others  but only  under  nondisclosure  agreements
      implemented in accordance with the provisions of Articles 4 and 5 hereof.

2.4   Acceptance.   Licensee  hereby  (i)  accepts  the  rights  under  the  NCT
      Technology  License  granted to it by NCT under  this  Article 2, and (ii)
      acknowledges  that the rights that NCT has  granted to Licensee  hereunder
      are limited to the manufacture,  use and sale of Licensed  Products in the
      Market and are subject to the further  limitations  that may be  described
      elsewhere in this Agreement.

2.5   Patent and Copyright  Notices.  Licensee shall mark each Licensed  Product
      sold,  leased,  distributed or otherwise  transferred  and shall cause all
      licenses, contracts and agreements with other parties for the sale, lease,
      distribution,  use or other  disposition of Licensed Products to contain a
      provision requiring, if feasible, such other parties to mark each Licensed
      Product  with a suitable  legend  identifying  the  Licensed  Patents  and
      Licensed  Technology with the appropriate  patent or copyright  notice, as
      the case may be.  If the  Licensed  Product  is too small to have a legend
      placed on it,  Licensee will use all  reasonable  efforts to have a legend
      placed on the software and/or packaging.

2.6   Product  Marking.  Licensee shall  prominently  mark each Licensed Product
      sold,  leased,  distributed or otherwise  transferred  and shall cause all
      licenses, contracts and agreements with other parties for the sale, lease,
      distribution,  use or other  disposition of Licensed Products to contain a
      provision requiring,  if feasible,  such other parties to prominently mark
      each  Licensed  Product with a suitable  legend  identifying  the Licensed
      Product as being a product which  incorporates NCT's flat panel transducer
      technology  and  including  such  words  and  logos as NCT may  reasonably
      request. If the Licensed Product is too small to have such a legend placed
      on it,  Licensee  will use all  reasonable  efforts  to have such a legend
      placed on the software and/or packaging.

ARTICLE 3.  LICENSE FEE AND ROYALTIES
3.1   License Fee. Upon the execution of this Agreement,  Licensee shall pay NCT
      $3,000,000 as a non-refundable license fee in partial consideration of the
      rights granted hereunder.

3.2   Unit Royalties.  Licensee shall pay NCT the royalties listed on Schedule C
      with respect to Licensee's sale, lease,  distribution or other transfer of
      Licensed Products.

3.3   Sublicensing  Royalties.  Licensee  shall pay NCT the royalties  listed on
      Schedule  C with  respect  to  sublicenses  granted  by  Licensee  for the
      manufacture,  use, sale,  lease or other  disposition or  distribution  of
      Licensed Products.

3.4   Payment.  Royalties payable under Sections 3.2 and 3.3 above shall be paid
      to NCT  within  forty-five  (45) days from the end of the  quarter of each
      calendar  year as  provided  in Article 7.  Licensee  agrees  that NCT may
      inspect  its  royalty/revenue  records  once a year upon  thirty (30) days
      notice, at NCT's own expense.

ARTICLE 4.  DISCLOSURE OF INFORMATION, DATA AND KNOW-HOW
4.1   Disclosure.  The parties  shall  disclose  to each other such  appropriate
      Technical  Information  as may be reasonably  required to  accomplish  the
      purposes of this  Agreement.  It is agreed,  however,  that neither  party
      shall be obligated to disclose  information,  the  disclosure of which has
      been restricted by a third party,  provided,  however, if such information
      is required in order to achieve the purposes of this Agreement,  the party
      which  holds  such  information  shall  inform  the other and use its best
      efforts to obtain  permission,  which may  consist of a license,  from the
      applicable third party to use such information for such purposes.

4.2   Treatment.  All  disclosed  Technical  Information  which is  Confidential
      Information (as defined in Article 5 below) shall be kept  confidential by
      the receiving party in accordance with the further provisions of Article 5
      below and will remain the property of the disclosing party.

ARTICLE 5.  CONFIDENTIALITY

5.1   Definitions.   Each  party   possesses   and  will   continue  to  possess
      confidential  information relating to its business and technology which it
      believes has substantial  commercial and scientific  value in the business
      in which it is engaged  ("Confidential  Information").  Subject to Section
      5.4, Confidential  Information includes,  but is not limited to, Technical
      Information,   trade  secrets,   processes,   formulas,   data,  know-how,
      discoveries,  developments, designs, improvements, inventions, techniques,
      marketing   plans,   strategies,   forecasts,   new   products,   software
      documentation,  unpublished  financial statements,  budgets,  projections,
      licenses,  prices,  costs,  customer  lists,  supplier lists and any other
      material   regarded  by  the  party  possessing  it  to  be  confidential,
      proprietary or a trade secret.  In order to be afforded  protection  under
      this  Article  5  tangible  forms  of  Confidential  Information  must  be
      identified  as such at the time of  disclosure  and  marked  "Confidential
      Information", "Proprietary Information" or in some other reasonable manner
      to indicate it is  confidential.  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 confirmed in a written summary  appropriately  marked as
      herein provided within ten (10) days after such oral or visual disclosure.

5.2   Treatment.  Each party shall during the term of this  Agreement  and for a
      period of five (5) years  thereafter,  hold in confidence and not disclose
      to third parties except as  specifically  permitted under this Section 5.2
      and Section 5.4 below any and all  Confidential  Information  of the other
      party disclosed directly or indirectly to it by the other party.

      Each party shall take the following minimum safeguards with respect to the
      Confidential Information of the other party:

      (a)   only those of its  employees  who need to receive the other  party's
            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   employee  to  properly  perform  his  or  her
            functions;

      (b)   all  documents,  drawings,  writings  and  other  embodiments  which
            contain  Confidential  Information  of  the  other  party  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;

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

      (d)   in no event shall a party receiving Confidential  Information of the
            other party disassemble,  reverse engineer,  re-engineer,  redesign,
            modify or alter any Confidential  Information  which it has received
            from the other party or attempt any of the  foregoing  without first
            obtaining the written consent of such other party in each instance.

      (e)   all employees and contractors who shall have access to Confidential
            Information of the other party shall be under written obligation to
            it; (i) to hold in confidence and not disclose all Confidential 
            Information made available to them in the course of their
            employment in a manner equivalent to that set forth herein; 
            (ii) to use such Confidential Information only in the course of
            performing their employment duties; and (iii) to assign to their 
            employer or the party retaining them all inventions or improvements
            relating to their employer's business and conceived while in their
            employer's employ unless such assignment is prohibited by 
            applicable law.

      Notwithstanding the foregoing, a party receiving Confidential  Information
      of the other party may  disclose to its  subcontractors  and  material and
      component  suppliers  so  much  of  such  Confidential  Information  as is
      necessary  to enable  such  party to perform  its  duties and  obligations
      related to the  accomplishment of the purposes of this Agreement  provided
      that such  subcontractors  and  suppliers  are  obligated to such party in
      writing;  (i) to hold in confidence and not disclose such information in a
      manner  equivalent  to that  set  forth  herein;  and (ii) not to use such
      information except as authorized by such party.

      In no event  shall the party  receiving  Confidential  Information  of the
      other party disassemble, reverse engineer, re-engineer, redesign, decrypt,
      decipher,  reconstruct,   re-orient,  modify  or  alter  any  Confidential
      Information  of the  disclosing  party or any circuit  design,  algorithm,
      logic or program code in any of the disclosing party's products, models or
      prototypes  which contain  Confidential  Information or attempt any of the
      foregoing  without first obtaining written consent of the disclosing party
      in each instance.

5.3   Return.  All  documents,  drawings,  writings and other  embodiments  of a
      party's Confidential  Information,  as well as those produced,  created or
      derived  from  the  disclosing  party's  Confidential   Information  which
      incorporate the disclosing party's Confidential Information and all copies
      thereof  shall be  returned  promptly  to it by the other  party  upon the
      termination of this Agreement  provided that the parties shall continue to
      be bound by the provisions of Section 5.2 above.

5.4   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 other  party  under a
            continuing  obligation of confidence of which the party receiving it
            was aware;

      (e)   required by law or the rules of any relevant  securities exchange to
            be disclosed,  but only to the extent of such  required  disclosure;
            provided,   that  a  party  required  to  so  disclose  Confidential
            Information shall use best efforts to notify the other 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; or

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

      (g)   is  Confidential  Information  of the  disclosing  party  which  the
            disclosing party has disclosed to third parties without restrictions
            on use and disclosure  comparable to those contained in this Article
            5.

ARTICLE 6.  IMPROVEMENTS
6.1   NCT Improvements. In the event that Licensee individually or together with
      NCT discovers, develops or creates any NCT Improvements during the term of
      this Agreement,  Licensee  promptly shall grant and assign, on a quitclaim
      basis,  all of its rights of  ownership in such NCT  Improvements  to NCT,
      whether such NCT Improvements are patentable or  non-patentable  under the
      laws of any country,  subject to any  governmental  approvals  that may be
      required for such grant back and assignment,  it being understood that any
      such NCT  Improvements  that are not made the  subject  of a patent  shall
      constitute part of the Licensed  Technology licensed to Licensee hereunder
      and that any such NCT  Improvements  that are made the subject of a patent
      shall  constitute  one  of  the  Licensed  Patents  licensed  to  Licensee
      hereunder.

      In the event that NCT individually discovers,  develops or creates any NCT
      Improvements  during the term of this Agreement which make use of, extend,
      are  based  upon  or  relate  to the  Licensed  Patents  or  the  Licensed
      Technology,  then any such NCT  Improvement  that is not made subject of a
      patent shall constitute part of the Licensed Technology licensed hereunder
      and any such NCT  Improvement  that is made the subject of a patent  shall
      constitute a Licensed Patent licensed hereunder.

6.2   Licensee Improvements. In the event that NCT individually or together with
      Licensee discovers,  develops or creates any Licensee  Improvements during
      the term of this  Agreement,  NCT  promptly  shall grant and assign,  on a
      quitclaim  basis,  all  of  its  rights  of  ownership  in  such  Licensee
      Improvements  to  Licensee,   whether  such  Licensee   Improvements   are
      patentable or non-patentable under the laws of any country, subject to any
      governmental  approvals  that  may be  required  for such  grant  back and
      assignment.

6.3   Joint  Discoveries.  In the event that Licensee and NCT jointly  discover,
      develop  or  create  any  intellectual   property  whether  patentable  or
      non-patentable that is not an Improvement or is an Improvement not covered
      by either Section 6.1 or 6.2 above, all rights and interest in and to such
      intellectual  property shall be owned equally by Licensee and NCT and each
      party hereby  grants to the other a royalty free,  perpetual,  irrevocable
      license to use and exploit any such intellectual property.

6.4   Dual Improvements. In the event Licensee and NCT jointly discover, develop
      or create any intellectual  property whether  patentable or non-patentable
      that is or could be an Improvement  under both Sections 6.1 and 6.2 above,
      all rights and  interest  in and to such  intellectual  property  shall be
      owned  equally by  Licensee  and NCT and each party  hereby  grants to the
      other a royalty free,  perpetual,  irrevocable  license to use and exploit
      any such intellectual property.

6.4   Individual  Discoveries.   In  the  event  that  either  Licensee  or  NCT
      individually discover, develop or create any intellectual property whether
      patentable  or  non-patentable,  that  is  not  an  Improvement  or  is an
      Improvement not covered by either Section 6.1 or 6.2 above, all rights and
      interest in and to such intellectual  property shall be owned by the party
      discovering, developing or creating the same.

6.5   Further  Assurances.  The parties shall take all action legally  permitted
      that may be necessary or  appropriate to assure full  compliance  with the
      provisions of this Article 6  notwithstanding  the fact that  intellectual
      property covered by this Article 6 may be discovered, developed or created
      by an employee of one of the parties hereto.

ARTICLE 7.  PAYMENTS, REPORTS AND RECORDS
Royalties 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.  If requested by NCT,  Licensee shall direct its independent
certified  public  accountants  at  Licensee's  expense  to  provide  NCT 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 independent  certified public 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.

ARTICLE 8.  TERM
The term of this Agreement  shall begin on the date hereof and,  unless extended
or earlier  terminated by the written agreement of the parties or the provisions
of Article 9 below,  shall expire  immediately upon either:  (i) with respect to
rights granted under any patent  hereunder,  the expiration of that patent under
applicable law; or (ii) with respect to the other rights granted hereunder, upon
the expiration of the last to expire of the patents licensed hereunder.

ARTICLE 9.  TERMINATION
9.1   General.  This  Agreement may be  terminated  prior to the end of the term
      provided in Article 8 above under any of the following  provisions of this
      Article.

9.2   Breach.  In the  event of a  material  breach  of this  Agreement,  if the
      defaulting  party fails to cure the breach within thirty (30) days, in the
      case of a breach involving non-payment of amounts to be paid hereunder, or
      sixty (60) days,  in the case of any other  kind of breach  following  its
      receipt of written  notice from the  non-defaulting  party  specifying the
      nature of the  breach  and the  corrective  action  to be taken,  then the
      non-defaulting  party may terminate this Agreement forthwith by delivering
      its written  declaration  to the  defaulting  party that this Agreement is
      terminated; provided any payment default will require the defaulting party
      to pay  interest  in order to cover  the  default  at the rate of the then
      current prime rate at The Chase Manhattan Bank N.A.

9.3   Insolvency.  If one of the parties becomes bankrupt or insolvent, or files
      a petition  therefor,  or makes a general  assignment  for the  benefit of
      creditors,   or  otherwise  seeks   protection  under  any  bankruptcy  or
      insolvency  law, or upon the  appointment of a receiver of the assets of a
      party  ("defaulting  party")  then the other party shall have the right to
      immediately terminate this Agreement upon written notice to the defaulting
      party provided, in any such instance, that said right of termination shall
      be postponed for as long as the defaulting  party continues to conduct its
      business in the ordinary course.

9.4   Survival.  Notwithstanding  the termination of this Agreement under any of
      the  provisions of this Article 9, the terms and  conditions of Articles 4
      and 5, and those  pertaining  to the  ownership of rights  acquired  under
      Article 6 shall survive  termination  of this Agreement and shall continue
      to be applicable and govern the parties with respect to the subject matter
      thereof.

9.5   Document Return.  Each party shall return to the other party within thirty
      (30)  days of the  date of  termination  under  either  Article  8 or this
      Article  9  all  of  the  Technical  Information  and  other  Confidential
      Information,  received pursuant to this Agreement  together with all other
      tangible property received for the implementation of this Agreement.

ARTICLE 10.  FORCE MAJEURE
In the event of enforced delay in the performance by either 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  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 other party in writing of the causes and requested an extension for
the  period of the  enforced  delay and shall use all  reasonable  endeavors  to
minimize the effects of any Event of Force Majeure.

ARTICLE 11.  APPLICABLE LAW
The terms and conditions of this Agreement and the performance  thereof shall be
interpreted in accordance with and governed by the laws of the State of Delaware
and the United States of America.

ARTICLE 12.  DISPUTE RESOLUTION
The parties agree to attempt in good faith to resolve any dispute arising out of
or in  connection  with the  performance,  operation or  interpretation  of this
Agreement  promptly  by  negotiation  between  the  authorized  contacts  of the
parties.

If a dispute should arise,  the authorized  contacts will meet at least once and
will attempt to resolve the matter.  Either  authorized  contact may request the
other to meet within fourteen (14) days, at a mutually agreed time and place. If
the matter has not been resolved within thirty (30) days of a request being made
for such a  meeting,  the  authorized  contacts  shall  refer the  matter to the
representatives  of the parties who are responsible for matters at the policy or
strategic  level  who shall  meet  within  fourteen  (14) days of the end of the
thirty (30) day period referred to above, at a mutually agreed time and place.

If the matter has not been  resolved  within thirty (30) days of a request being
made for this meeting, the parties shall proceed as follows:

(a)  Any action,  suit or proceeding  where the amount in  controversy  as to at
     least one party,  exclusive of the interest and costs,  exceeds one million
     dollars  (a  "Summary  Proceeding"),  arising  out of or  relating  to this
     Agreement  or  the  breach,  termination  or  validity  thereof,  shall  be
     litigated  exclusively  in the Superior Court of the State of Delaware (the
     "Delaware  Superior  Court")  as a  summary  proceeding  pursuant  to Rules
     124-131  of the  Delaware  Superior  Court,  or any  successor  rules  (the
     "Summary Proceeding Rules").  Each of the parties hereto hereby irrevocably
     and  unconditionally  (i)  submits  to the  jurisdiction  of  the  Delaware
     Superior Court for any Summary Proceeding,  (ii) agrees not to commence any
     Summary Proceeding except in the Delaware Superior Court, (iii) waives, and
     agrees not to plead or to make,  any  objection to the venue of any Summary
     Proceeding in the Delaware Superior Court,  (iv) waives,  and agrees not to
     plead or to make,  any claim  that any  Summary  Proceeding  brought in the
     Delaware  Superior  Court has been  brought  in an  improper  or  otherwise
     inconvenient  forum,  (v) waives,  and agrees not to plead or to make,  any
     claim that the Delaware Superior Court lacks personal jurisdiction over it,
     (vi)  waives  its right to remove any  Summary  Proceeding  to the  federal
     courts  except  where  such  courts  are  vested  with  sole and  exclusive
     jurisdiction by statute and (vii)  understands and agrees that it shall not
     seek a jury trial or punitive damages in any Summary  Proceeding based upon
     or arising out of or otherwise related to this Agreement and waives any and
     all rights to any such jury trial or to seek punitive  damages.  

(b)  In the event any action, suit or proceeding where the amount in controversy
     as to at least one party,  exclusive of interest and costs, does not exceed
     One Million  Dollars (a  "Proceeding"),  arising out of or relating to this
     Agreement or the breach,  termination or validity  thereof is brought,  the
     parties  to such  Proceeding  agree  to make  application  to the  Delaware
     Superior Court to proceed under the Summary  Proceeding  Rules.  Until such
     time as such application is rejected, such Proceeding shall be treated as a
     Summary  Proceeding  and all of the  foregoing  provisions  of this Section
     relating to Summary Proceedings shall apply to such Proceeding.

(c)  In the event a Summary  Proceeding  is not available to resolve any dispute
     hereunder,  the  controversy  or claim  shall  be  settled  by  arbitration
     conducted  on a  confidential  basis,  under the U.S.  Arbitration  Act, if
     applicable,  and the  then  current  Commercial  Arbitration  Rules  of the
     American  Arbitration  Association  ("Association")  strictly in accordance
     with the terms of this  Agreement and the  substantive  law of the State of
     Delaware.  The arbitration shall be conducted at the Association's regional
     office located  closest to Licensee's  principal place of business by three
     arbitrators,  at  least  one of  whom  shall  be  knowledgeable  in  Active
     Technology  and  one of  whom  shall  be an  attorney.  Judgment  upon  the
     arbitrators'  award may be entered and  enforced in any court of  competent
     jurisdiction.  Neither party shall institute a proceeding  hereunder unless
     at least sixty (60) days prior  thereto such party shall have given written
     notice to the other  party of its intent to do so.  Neither  party shall be
     precluded  hereby  from  securing  equitable  remedies  in  courts  of  any
     jurisdiction,  including,  but not limited to, temporary restraining orders
     and  preliminary  injunctions  to protect its rights and interests but such
     shall not be sought as a means to avoid or stay  arbitration.  (d) Licensee
     hereby  designates and appoints The Corporation  Trust Company with offices
     on the date  hereof at 1209 Orange  Street,  Wilmington,  DE 19801,  as its
     agent  to  receive   service  of  process  in  any  Proceeding  or  Summary
     Proceeding.  NCT hereby designates and appoints Corporation Service Company
     with offices on the date hereof at 1013 Centre Road, Wilmington,  DE 19805,
     as its agent to receive such service.  Each of the parties  hereto  further
     covenants  and agrees that, so long as this  Agreement  shall be in effect,
     each such party shall  maintain a duly  appointed  agent for the service of
     summonses  and other  legal  processes  in the State of  Delaware  and will
     notify the other parties hereto of the name and address of such agent if it
     is no longer the entity identified in this article.

ARTICLE 13.       ANNOUNCEMENTS AND PUBLICITY; INDEPENDENT    CONTRACTORS

Except for any disclosure  which may be required by law,  including  appropriate
filings  with the  Securities  Exchange  Commission,  neither  party may use the
other's name or disclose the terms of this Agreement  without the consent of the
other, which consent shall not be unreasonably withheld.

Each party to this Agreement is an  independent  contractor and neither shall be
considered the partner, employer, agent or representative of the other.

ARTICLE 14.  SEVERABILITY
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.

ARTICLE 15.  RIGHTS OF ASSIGNMENT; SUCCESSORS AND ASSIGNS
Neither NCT nor Licensee shall have any right to assign this Agreement or any of
their respective  rights or obligations  under this Agreement to any third party
except by operation of law or with the prior written consent of the other party.
In the event Licensee  wishes to assign any of its rights or  obligations  under
this  Agreement  to  an  Affiliate  of  Licensee,  NCT's  consent  will  not  be
unreasonably  withheld.  In the event NCT  wishes to assign any of its rights or
obligations under this Agreement to an Affiliate of NCT, Licensee's consent will
not be  unreasonably  withheld.  The provisions of this Agreement shall inure to
the benefit of, or be binding  upon,  the  successors  and assigns of each party
hereto.

ARTICLE 16.  NOTICES
Any  notices  under  this  Agreement  shall be in  writing  and  shall be deemed
delivered  if  delivered  by personal  service,  or sent by telecopy 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  Section by the other party,  any notice or  communication
hereunder shall be addressed to NCT as follows:

                  Noise Cancellation Technologies, Inc.
                  1025 West Nursery Road
                  Linthicum, Maryland 21090
                  Attention:  President
                  Telecopy No:  (410) 636-5989

                  to Licensee as follows:

                  NCT Hearing Products, Inc.
                  1025 West Nursery Road
                  Linthicum, Maryland 21090
                  Attn:  President
                  Telecopy no. (410) 636-5989


ARTICLE 17.  TAXES
Licensee  shall be  solely  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 Licensee of Licensed Products or the
Licenses  granted  hereunder.  Any other taxes,  including income taxes based on
royalties and other payments to NCT, shall be the responsibility of NCT.

ARTICLE 18.  INDEMNIFICATION
Each of NCT and Licensee  agrees to  indemnify,  defend,  and hold  harmless the
other party and each of its officers,  directors,  employees, agents, successors
and assigns  (hereinafter  referred to in the  aggregate in this section as "the
Indemnified Party") against any and all losses,  claims,  damages,  liabilities,
costs and expenses (including without limitation, reasonable attorneys' fees and
other  costs of defense of every kind  whatsoever  and the  aggregate  amount of
reasonable  settlement of any suit,  claim or proceeding)  which the Indemnified
Party may incur or for which the Indemnified  Party may become liable on account
of any suit,  claim or  proceeding  purporting  to be based  upon a  failure  to
perform  obligations  under this  Agreement  to be  performed by the other party
(hereafter  the  "Indemnifying   Party")  and  its  employees  or  agents.   The
Indemnified Party shall promptly advise the Indemnifying Party of any such suit,
claim or  proceeding  and shall  cooperate  with the  Indemnifying  Party in the
defense or settlement of such suit, claim or proceedings providing no settlement
shall be made without the consent of the Indemnified  Party, which consent shall
not be unreasonably  withheld. In any event, the Indemnified Party shall furnish
to the  Indemnifying  Party such  information  relating  to such suit,  claim or
proceeding  as the  Indemnifying  Party  shall  reasonably  request  for  use in
defending the same.

ARTICLE 19.  MAINTENANCE AND DEFENSE OF LICENSED PATENTS
Throughout the term of this Agreement,  NCT shall maintain in force the Licensed
Patents.  In this  connection,  NCT shall  promptly pay all costs of any and all
continuations,    continuations-in-part,    divisions,   extensions,   reissues,
re-examinations,  or  renewals  of  the  Licensed  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.  In addition, NCT
shall actively  protect the Licensed Patents and shall institute all such suits,
actions or proceedings for infringement of any of the Licensed Patents as may be
necessary in this regard and shall defend and save harmless Licensee against any
suit, damage claim or demand, and any loss, cost or expense suffered as a result
thereof  (including  reasonable  attorneys  fees),  based on actual  or  alleged
infringement  of any patent or trademark or any unfair trade practice  resulting
from the exercise or use of any right or license  granted under this  Agreement.
Unless NCT shall have  received the advice of counsel that success on the merits
is reasonably certain, NCT shall be excused from its duty to commence and/or may
withdraw  from any  enforcement  action under the Licensed  Patents and Licensee
shall then be free to pursue enforcement of the Licensed Patents in its own name
and at its sole  expense  and risk,  but only to the  extent  such  infringement
occurs in the Market.  In the event NCT fails to protect the Licensed Patents as
aforesaid after notice of possible infringement from Licensee, Licensee shall be
entitled by itself to take  proceedings in the name of and with the  cooperation
of NCT  to  restrain  any  such  infringement  at  Licensee's  expense  and  for
Licensee's  benefit. In the event NCT fails to defend and save harmless Licensee
as herein  provided,  Licensee  shall be  entitled  by itself to take all action
necessary or advisable for its defense and shall be entitled to deduct all costs
and expenses  incurred in such defense from the amount of any royalties  payable
under this Agreement to the extent the same have not been covered by any amounts
awarded  to  Licensee  under  a  settlement  of or  judgment  rendered  in  such
proceeding.  NCT shall take all such action as may be  reasonably  requested  by
Licensee to assist  Licensee in the proper  prosecution  of its  defense.  Where
Licensee  proceeds  alone and  achieves an award from the  official  enforcement
forum in such an action brought by it, Licensee shall be entitled to retain such
award.  However,  any  compromise  of such  enforcement  action or concession of
invalidity or priority of invention of any patent whether in connection  with an
enforcement action or any other proceeding shall require NCT's participation and
express prior written  approval.  If NCT has elected to participate in and share
in the expense of any such enforcement action, any award shall be shared equally
by NCT and Licensee.

Notwithstanding  the  foregoing,  NCT shall have no  liability  to defend or pay
damages or costs to Licensee with respect to any claim of infringement  which is
based on an implementation not designed by NCT or that is modified by others, or
used or combined in a manner not contemplated by the transfer of NCT Technology.

ARTICLE 20.  WARRANTIES
NCT represents and warrants that it has the right,  power and authority to enter
into this Agreement and to grant the licenses and other rights  contained herein
to  Licensee as herein  provided  and that none of the same will breach or be in
violation of any agreement, license, or grant made with or to any other party by
NCT and that to the best of NCT's knowledge and belief the Licensed  Patents are
valid and do not infringe any other patent issued prior to the date hereof.


ARTICLE 21.  DISCLAIMER
EXCEPT AS  SPECIFICALLY  SET FORTH IN THIS AGREEMENT,  NCT HEREBY  DISCLAIMS ANY
EXPRESS OR IMPLIED WARRANTY OF THE ACCURACY,  RELIABILITY,  TITLE, TECHNOLOGICAL
OR  COMMERCIAL  VALUE,  COMPREHENSIVENESS  OR  MERCHANTABILITY  OF THE  LICENSED
PATENTS, THE LICENSED TECHNOLOGY, OR THE LICENSED PRODUCTS, OR THEIR SUITABILITY
OR FITNESS FOR ANY PURPOSE  WHATSOEVER.  NCT DISCLAIMS  ALL OTHER  WARRANTIES OR
WHATEVER NATURE, EXPRESS OR IMPLIED. NCT DISCLAIMS ALL LIABILITY FOR ANY LOSS OR
DAMAGE RESULTING,  DIRECTLY OR INDIRECTLY, FROM THE USE OF THE LICENSED PATENTS,
THE LICENSED TECHNOLOGY, OR THE LICENSED PRODUCTS, OTHER THAN THOSE ARISING FROM
CLAIMS OF INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OF THIRD PARTIES; WITHOUT
LIMITING THE GENERALITY OF THE FOREGOING, THIS DISCLAIMER EMBRACES 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, AND INJURY TO OR DEATH OF ANY PERSONS.

ARTICLE 22.   SCOPE OF THE AGREEMENT
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.  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.

IN WITNESS THEREOF,  Licensee and NCT have executed this Agreement  effective as
of the date first written above.

NCT HEARING PRODUCTS, INC.

By:    /s/ IRENE LEBOVICS
       ------------------
       Irene Lebovics
Title: President
Date:  July 15, 1998


NOISE CANCELLATION TECHNOLOGIES, INC.

By:    /s/ MICHAEL J. PARRELLA
       -----------------------
       Michael J. Parrella
Title: President
Date:  July 15, 1998





                                    Exhibit A
                                   NCT Patents
Licensed Patents

Patents

HEADSETS
      Generics That Apply


      US          4,783,818  Issued  November 8, 1988,  entitled  "Method of and
                  Means for  Adaptively  Filtering  Screeching  Noise  Caused by
                  Acoustic  Feedback".  Provides an  identification  circuit for
                  dynamically   identifying   parameters  associated  only  with
                  acoustic  feedback,  and a  correction  circuit.  For  use  in
                  communication systems such as hearing aids.

      US          4,862,506 Issued August, 1989, entitled  "Monitoring,  Testing
                  and  Operator   Controlling  of  Active  Noise  and  Vibration
                  Cancellation  Systems". It describes a flexible user interface
                  for  maintenance  and operation of the  electronics  for noise
                  cancellation.  It is in use in the  MRI  headset  product  for
                  testing and maintenance.2

      US          5,105,377  Issued April 14, 1992,  entitled  "Digital  Virtual
                  Earth"(DVE).  A  digital  adaptive  feedback  control  system.
                  Instability  is prevented by use of a fixed  internal model of
                  the  physical  system.  This  approach  has  been  used  noise
                  canceling headsets industrial mufflers.3

      US          5,418,857 Issued May 23, 1995, entitled "Active Control System
                  for Noise  Shaping".  The use of an active  control  system to
                  control the quality of a sound  rather than just try to cancel
                  it.   Has   applications   for  sound   quality   control   in
                  automobiles.4

      US          5,440,642  Issued  August  8,  1995,  entitled  "Analog  Noise
                  Cancellation  System Using  Digital  Optimization  of Variable
                  Parameters".  A digital  control  system is used to adjust the
                  response of an analog noise cancellation system and to control
                  tonal  components of the noise.  Has application to active ear
                  defenders.5

      US          5,481,615  Issued  Jan  2,  1996,   entitled  "Improved  Audio
                  Reproduction System". The use of a combination of active noise
                  control and adaptive  equalization to improve an audio system.
                  This  has  particular  use  in  headsets  for  hi-fi  and  for
                  telecommunications.6

      US          5,652,799  Issued  July 29,  1997,  entitled  "Noise  Reducing
                  System". A control system for selectively reducing tonal noise
                  without the use of reference signal or tachometer  signal. Has
                  application  to active  headsets where speech or other signals
                  must not be canceled.7

HEADSETS

      Application Specific

      US          4,654,871   Issued  March  31,  1987,   entitled  "Method  and
                  Apparatus for Reducing  Repetitive Noise Entering the Ear". It
                  provides for open-backed  headsets  wherein a repetitive noise
                  signal  detected by a  microphone  at the headset is nulled by
                  the  headphone  diaphragm  in an  adaptive  manner.  A similar
                  approach to provide a noise-free zone at a seat is described.8

      US          4,701,952 Issued May 26, 1987, entitled "Frequency Attenuation
                  Compensated  Pneumatic  Headphone and Liquid Tube Audio System
                  for Medical Use". Describes a system for delivering music into
                  a passive headset for MRI patients.

                  Reissued April 27, 1993 as Re. 34,236.

      GB          2,172,769  Issued  July 6,  1988,  entitled  "Improvements  in
                  Acoustic  Attenuation".  An analog  active  headset  utilizing
                  feedforward control.

      GB          2,160,070   Issued   December   11,  1985,   Entitled   "Sound
                  Reproduction   System".   An  analog  active  headset  with  a
                  communications  input. The  communication  signal is equalized
                  and mixed with the input and/or output of the feedback control
                  loop. Used in current communications headsets.

      GB          2,172,470  Issued  January 11,  1989,  entitled  "Improvements
                  Relating to Noise  Reduction  Arrangements".  An analog active
                  headset  in which a second  microphone  is used to adjust  the
                  feedback gain automatically so as to prevent instability.9

      EP          0,212,840  Issued October 23, 1991,  entitled "Noise Reduction
                  Device".  An analog active  headset in which the feedback gain
                  is automatically  adjusted.  The adjustment may performed by a
                  digital controller.10

      EP          0,232,096  Entitled "Acoustic Transducer".  A closed-back 
                  headset in which the ear cup is vented to improve low 
                  frequency performance. 11

      EP          0,192,379 Entitled  "Improvements  Relating to Noise Reduction
                  Arrangements".  A  closed-back  active  headset  which uses an
                  additional loudspeaker connected to the headset by a tube. The
                  tube acts as an acoustic low pass filter which  prevents noise
                  caused by any non-linear  distortions of the loudspeaker  from
                  reaching the ear.12

      US          4,953,217  Issued August 28, 1990,  entitled "Noise  Reduction
                  System".  An analog active  headset which includes a device to
                  reduce the effect of low frequency sound buffeting.13

      US          5,452,361  Issued  September 19, 1995,  entitled  "Reduced VLF
                  Overload Susceptibility Active Noise Cancellation Headset". In
                  an analog  feedback  headset,  an extra  microphone is used to
                  detect very low frequency (VLF) sound and subtract it from the
                  feedback  signal.  This removes the VLF component  without the
                  need for extra high pass  filtering  - which  would  introduce
                  delay and therefore reduce performance.14

      US          5,313,945 Issued May 24, 1994,  entitled  "Active  Attenuation
                  System for  Medical  Patients".  Active ear  defender  for MRI
                  patients  in which  the  sound  in the  headset  is  monitored
                  through hollow plastic tubes and anti-noise is supplied to the
                  headset through hollow plastic tubes.  Used in the MRI headset
                  product.15

      US          5,375,174  Issued  December 20, 1993,  entitled  "Remote Siren
                  Headset".  An active headset for use in emergency  vehicles in
                  which the  control  system is  separated  from the headset and
                  communicates  remotely.  This  allows  the  headset to be more
                  portable,  have  longer  battery  life,  and  allows  a single
                  controller to control several headsets.

      US          5,604,813  Issued  February  18,  1997,  entitled  "Industrial
                  Headset". A communications headset which provides active noise
                  cancellation without interruption of normal  communication.  A
                  bridge circuit is used to by-pass the ANC circuit as required,
                  and the  communications  signal is boosted when the ANC system
                  is in operation.16

      US          5,699,436 Issued December 16, 1997, entitled "Hands Free Noise
                  Canceling Headset".  The use of the residual microphones in an
                  active noise canceling headset system to pick up the speech of
                  the wearer for use with communication systems.17

      US          5,815,582  Issued  September 29, 1998,  entitled "Active Plus
                  Selective Headset".  The use of an open back headset and a 
                  feedforward noise  cancellation system to provide comfort and
                  enhanced communications for the user.18


Patents Pending Under Filed Applications

      Patents Pending

      (268)       Headset:  Filed  September 7, 1995. The use of a dome to cover
                  the  front of a  loudspeaker  in an  active  headset,  thereby
                  obtaining a more consistent  acoustic  response.  This enables
                  higher  feedback  gain  to be used  and  results  in  improved
                  cancellation performance.

      (271)       Active Headset: Filed April 30, 1997. Active headset canceling
                  external noise in both the higher and lower  frequency  ranges
                  while reducing the subjective pressure felt within the ears by
                  the user.  A bridge  amplifier  circuit  is used which is user
                  adjustable without reducing the breadth of the given frequency
                  range over which noise reduction is effective.

      (272)       Noise  Cancellation  System for Active Headsets:  Filed August
                  18,  1997.  This  invention   relates  generally  to  a  noise
                  cancellation system for active headsets, and more particularly
                  to an active headset  capable of  compatibility  with existing
                  socket  configurations  of an  external  device and capable of
                  powering active noise  cancellation  circuitry  whether or not
                  resident in the active headset.

      (373)       Variable Gain Active Noise  Cancellation  System with Improved
                  Residual  Noise  Sensing:  Filed June 23,  1993.  In an active
                  headset,  the error  microphone  is  displaced  radially  with
                  respect  to the  loudspeaker  so as to  measure  a sound  more
                  closely related to that at the ear. Additional features,  such
                  as side  perforations,  are used to obtain  improved  and more
                  robust performance.

      (617)       Cushioned Earphones: Filed March 18, 1998. Use of auxetic foam
                  in headset  ear  cushions  which more  readily  moulds  around
                  irregularities  in the  shape  of the ear and so  reduces  air
                  leaks.

      (618)       Headset for  Aircraft:  Filed March 18, 1998.  An active noise
                  reduction  headset  for  use  by  aircraft  passengers.   Each
                  earphone  comprises  at least two  parts,  one  carried by the
                  headband,  the other part  connecting  both  mechanically  and
                  electrically to the first part.  Components requiring frequent
                  replacement  are  carried  by one part and the  other  part is
                  available for re-use.

Disclosures for Which Patent Applications may be Filed

A Non-Adaptive  Variable  Response Active Headset  Hearing Aid Occlusion  Effect
Elimination Active Safety Plugs and Hearing Aids  Piezoelectric  Transducers for
Hearing  Aid   Applications   Filled   Cavity   Hearing  Aid  Hearing  Aid  with
Piezoelectric Inserts






                                    Exhibit B
                               Licensed Technology
[Should be limited to that NCT technology to be used in "Licensed Products"]







                                    Exhibit C
                                    Royalties


Unit  Royalties  (Article  3.2)  shall  be at the  rate  of  6.0%.  Sublicensing
Royalties (Article 3.3) shall be at the rate of 50%.



- --------
1 If other than to the record holder of the Series D Preferred Shares, any
applicable transfer tax must be paid by the undersigned.
2 Issued in Canada
3 Issued in Australia, Canada, Korea
      Pending in Europe,  Japan
4 Pending in Canada, Europe and Japan
5 Pending in Canada, Europe and Japan
6 Pending in Canada, Europe
7 Issued in Australia, Canada, Europe (France, Germany, Italy, Netherlands,
Sweden, UK)
   Pending in Japan
8 Issued in Australia, Austria, France, Germany, Netherlands, Norway, S. Africa,
Sweden,  Switzerland,  UK 
9 Issued in Austria,  Belgium,  Switzerland,  Germany, France, Italy,  
Netherlands,  Sweden,  Luxembourg 
10 Issued in Austria, Belgium, Switzerland,  Germany,  France, Italy,  
Luxembourg,  Netherlands,  Sweden, UK 
11 Issued in Austria, Belgium,  Switzerland,  Germany, Spain France, Greece, 
Italy, Luxembourg, Netherlands, Sweden, UK
12 Issued in Austria, Belgium, France, Germany, Italy, Luxembourg, Netherlands,
Sweden, Switzerland, UK
13 Issued in Australia, Austria, Belgium, Canada, France, Germany, Italy, 
Luxembourg, Netherlands, Sweden, Switzerland, UK
14 Pending in Europe
15 Issued in Canada and Korea
16 Pending in Europe, Canada, Japan
17 Pending in Canada and Europe
18 Pending in Canada, Europe