EMPLOYMENT AGREEMENT

                             For Paul D. Siomkos

      THIS EMPLOYMENT AGREEMENT ( the "Agreement") is made as of the 26th day of
February,  1998, by and between Paul D. Siomkos,  an individual  residing at 108
Ridgecrest  Road,   Stamford,   Connecticut   06903   ("Employee"),   and  Noise
Cancellation  Technologies,  Inc., a Delaware corporation (the "Company"),  with
executive offices at One Dock Street, Stamford, Connecticut, 06902.

      WHEREAS, the Company is engaged in the business of making,  using, selling
and developing technology and products related to active wave management and the
reduction and elimination of noise and/or vibration; and

      WHEREAS,   Employee  has  a  significant  degree  of  expertise  in  the
Company's business; and

      WHEREAS,  the Company wishes to employ  Employee,  and Employee  wishes to
work for the Company, in the capacity of Senior Vice President Operations.

      NOW THEREFORE,  in  consideration of the promises and the mutual covenants
and agreements herein contained, the parties hereby agree as follows:

1.    TERM OF AGREEMENT.

      This  Agreement  shall be  effective  from the date  first  above  written
("Effective  Date") and its initial  term shall  continue in effect  through the
fourth  anniversary  of the  Effective  Date  (such four year  period  being the
"Initial  Term").  The Company  agrees that the Employee may be required to give
four weeks notice of termination to his current employer and may not start until
April 20, 1998. The Employee agrees that his base salary compensation will begin
on  April  20,  1998.  This  Agreement  shall  automatically  be  renewed  for a
successive  four-year  periods  ("Renewal Term") unless at least sixty (60) days
prior to the end of each term either party hereto  gives  written  notice to the
other party of its intention not to renew this Agreement.  This Agreement may be
terminated at any time during its Initial Term or during the Renewal Term solely
in accordance with the terms and conditions of Section 6 hereof.

2.    EMPLOYMENT.

      Section 2.1 Position.

      (a) The Company  hereby employs  Employee in a professional  capacity with
the title of Senior Vice President Operations,  and Employee hereby accepts such
employment and undertakes and agrees to serve in such capacity.

      (b)  Employee  shall  work  exclusively  with  the  Company  in  providing
management of product engineering,  product production, product distribution and
operations.

      Section 2.2 Scope of Service.

      During the Initial Term and any renewal term of this  Agreement,  Employee
shall devote his  exclusive  working time and attention  during normal  business
hours to the business and affairs of the Company.  Employee  agrees that he will
at  all  times  faithfully,  industriously,  and  to the  best  of his  ability,
experience,  and  talents  perform all of the duties that may be required of and
from him as Senior Vice President  Operations as determined from time to time by
the  Company's  President and Board of Directors and pursuant to the express and
implicit terms of this Agreement, to the reasonable satisfaction of the Company.
Employee  shall not accept  employment  from any third  party as an  employee or
consultant,  serve on the board of  directors or similar  governing  body of any
third party, or otherwise assume outside  responsibilities that would impair his
ability to devote his  exclusive  working time and  attention  to the  Company's
business and affairs without the written consent of the Company.  Employee shall
inform the  Company in writing  thirty (30) days prior to  undertaking  any such
position or responsibilities.

      Section 2.3 Communication to Employer.

      From the Effective  Date of this  Agreement  until  termination,  Employee
shall  communicate  and  channel to the  Company all  knowledge,  business,  and
customer  contacts and any other matters or  information  that concerns or is in
any way beneficial or detrimental to the business of the Company,  including any
inventions  or ideas  that may be  useful to the  Company  in its  research  and
development  efforts, or in the manufacture,  use or sale of its products or the
licensing of its technologies, whether acquired by Employee before or during the
term of this  Agreement;  provided,  however,  that nothing under this Agreement
shall be construed as requiring  such  communications  where the  information is
lawfully  protected  from  disclosure  as a  legitimate  trade secret of a third
party. Any such information communicated to the Company as stated above shall be
and remain the property of the Company,  notwithstanding  subsequent termination
of this Agreement.




      Section 2.4 Location.

      (a) Employee  shall render  services under this Agreement at the Company's
facilities located in the environs of Stamford, Connecticut.  Employee agrees to
assist in the relocation of the company's operations from Linthicum, Maryland to
Connecticut.

      (b)  Employee  agrees  to make  business  trips at such  times and to such
locations as may be  reasonable  and  necessary in  performance  of his services
under this Agreement.

3.    COMPENSATION.

      Section 3.1

      (a) In consideration of the services rendered hereunder, the Company shall
pay Employee during the Initial Term of this Agreement a base salary at the rate
of one hundred fifty  thousand  Dollars  ($150,000)  per annum ("Base  Salary").
Employee  and the Company  may agree on a higher Base Salary  during the Initial
Term or for any renewal term of this  Agreement  but if they do not agree by the
beginning of a renewal term,  Employee's Base Salary shall be the Base Salary he
received in the year immediately prior to the renewal term.
      (b) The Base  Salary  shall be payable by the Company to Employee in equal
semi-monthly  installments no later than the first and fifteenth business day of
each month.

      (c) The Company shall reimburse  Employee for all reasonable and necessary
expenses  (including travel expenses)  incurred by him in the performance of his
duties under this  Agreement.  Such  reimbursements  shall be timely made by the
Company upon submission by Employee of vouchers itemizing such expenses, in form
and substance reasonably satisfactory to the Company.

      Section 3.2 Incentive Bonus.

      To further the  attainment  of the Company's  objectives,  the Company may
from time to time pay Employee an incentive  bonus.  The time and amount of such
incentive  bonus shall be in the sole  discretion  of the  Company.  The Company
agrees to set up a mutually agreed upon bonus program each year.

      Section 3.3 Fringe Benefits.

      In addition to the compensation provided for above, so long as Employee is
employed  by the Company  under this  Agreement,  Employee  shall be entitled to
receive from the Company all other vacation and fringe benefits  including major
medical and life and  disability  insurance  coverage,  as are from time to time
generally  provided by the Company to its officers and other employees  attached
as Exhibit C Standard Benefits.

      Section 3.4 Equity Participation.

      In further  consideration of the services rendered hereunder,  the Company
agrees to grant to Employee the equity  participation  rights in the Company set
forth in Exhibit A & D attached hereto.

      Section 3.5 Car Allowance.

      The company will pay the employee a monthly car allowance of $1,000.

4.    CONFIDENTIALITY,   INVENTIONS,   NON-COMPETITION,   AND   NON-SOLICITATION
      AGREEMENT.

      Section 4.1 Agreement.

      As a condition to his  employment  hereunder,  Employee  shall execute and
deliver   the   Company's   standard   form  of   "Employee's   Confidentiality,
Non-Competition  and  Invention  Agreement" in  substantially  the form attached
hereto as Exhibit B (the "NCT Standard Agreement").  Upon execution and delivery
thereof,  the  terms  and  conditions  of the NCT  Standard  Agreement  shall be
incorporated  into and made a part of this Agreement and shall be enforceable in
conjunction herewith, provided that the NCT Standard Agreement shall survive any
termination of this  Agreement,  and shall remain  enforceable and in full force
and effect in accordance with its terms at all times  irrespective of any reason
for termination of this Agreement.

      Section 4.2 Breach of Contract.

      Employee  represents and warrants that his performance of all the terms of
this Agreement, and of the NCT Standard Agreement,  does not and will not breach
any  agreement not to compete,  any agreement to keep in confidence  proprietary
information,  knowledge or data  acquired or received by him in confidence or in
trust, or any other agreement to which Employee is a party.  Employee agrees not
to enter into any agreement or undertaking,  either written or oral, which would
be  in  conflict  with  this  Agreement  or  the  NCT  Standard  Agreement.  The
representations  and covenants by Employee  under this Section 4.2 shall survive
any termination of this Agreement.




5.    SPECIFIC PERFORMANCE.

      The parties  hereby declare that the rights of the Company under Section 4
of this  Agreement and under the NCT Standard  Agreement are of a unique nature,
the loss of which may cause  irreparable  harm, and that it may be impossible to
measure in money the  damages  which will accrue to the Company by reason of the
loss of such  rights or a failure by Employee to perform or adhere to any of the
obligations  under  Section  4 of this  Agreement  or  under  the  NCT  Standard
Agreement.  Employee  expressly  acknowledges that remedies at law alone will be
inadequate to  compensate  the Company for any breach or violation of any of the
provisions of Section 4 of this Agreement or the NCT Standard Agreement and that
the Company, in addition to all other remedies hereunder or thereunder, shall be
entitled,  as a matter of right, to temporary and permanent  injunctive  relief,
including specific performance, with respect to any such breach or violation, in
any court of competent jurisdiction.

6.    TERMINATION.

      Section 6.1 Termination by the Company for Cause.

      The  Company  may  terminate  this  Agreement  and  Employee's  employment
hereunder for "Cause" which shall be limited to any one of the following:

      (a)  Repeated and  documented  refusal or inability by Employee to perform
substantially  the duties and obligations of his employment and upon thirty (30)
days  written  notice to Employee of the  Company's  finding of such  refusal or
inability to perform substantially the duties and obligations of his employment;

      (b) Commission by Employee in the  performance  of his duties:  of willful
misconduct,  actionable  negligence,  fraudulent  acts or  acts  of  dishonesty,
disloyalty or breach of trust against the Company, including breach or violation
of any  provision  of the NCT  Standard  Agreement,  or  other  illegal  acts or
omissions,  and  upon  reasonably  prompt  written  notice  to  Employee  of the
Company's finding of any such misconduct, act or omission;

      (c) Employee's  permanent  disability (for the purposes of this Agreement,
permanent  disability  shall  mean  Employee's  inability,   whether  mental  or
physical,  to perform the regular duties of his employment on a full-time  basis
for six (6) consecutive months); or

      (d) Employee's death (for which no notice is required).

      Section 6.2 Termination by the Company Without Cause.

      The  Company  may  terminate  this  Agreement  and  Employee's  employment
hereunder without Cause, upon thirty (30) days prior written notice.

      Section 6.3 Termination by Employee.

      Employee may terminate this Agreement and his employment hereunder:

      (a)   voluntarily, upon sixty (60) day written notice to the Company; or

      (b)   at any time, upon immediate written notice to the Company due to any
            material breach of this Agreement by the Company; or,

      (c)    upon five (5) day  written  notice to the Company in the event of
            a substantial  change in control of the Company.  For the purposes
            of this Agreement,  a substantial change in control shall mean: 1)
            a change in  control  of a nature  that  would be  required  to be
            reported in response  to Item 6(e) of Schedule  14A of  Regulation
            14A  promulgated  under the Securities  Exchange Act of 1934 as in
            effect on the date of this Agreement;  provided that such a change
            in control  shall be deemed to have  occurred only if and when any
            "person"  (as the term is used in Section  13(d) and  14(d)(2)  of
            the  Securities  Exchange Act of 1934) becomes a beneficial  owner
            directly or indirectly  of securities of the Company  representing
            more than fifty percent (50%) of the combined  voting power of the
            Company's  then  outstanding  securities  or 2) a  liquidation  or
            dissolution  of the  company  or 3) an  agreement  for the sale or
            other  disposition  of all or  substantially  all of the assets of
            the company.

      Section 6.4 Return of Property Upon Termination.

      Upon termination of this Agreement for any reason,  or whenever  requested
by the  Company,  Employee  shall  immediately  return to the Company all of the
Company's  property  including,  but not limited to items  specified  in the NCT
Standard Agreement, and all books, notes, equipment,  prototypes,  documentation
and other things used or prepared by Employee's possession or under his control.




      Section 6.5 Severance.

      If this  Agreement is terminated  pursuant to Section 6.1 or to clause (a)
of Section 6.3 above,  during the Initial Term or during any Renewal Term, or by
Employee's  electing not to renew this  Agreement at the end of the Initial Term
or any Renewal Term,  Employee shall have no right to severance pay or any other
cash or other consideration or employer provided benefits from the Company other
than Base Salary payments and vacation  accrued but unpaid as of the termination
date and vested stock options  exercisable  in accordance  with the stock option
plan attached as Exhibit D.

      If this  Agreement is terminated  pursuant to Section 6.2 or clause (b) or
(c) of  Section  6.3,  the  Company  shall pay  Employee a  severance  amount as
follows:

      (a)   If terminated during the Initial Term, the Employee's Base Salary in
            accordance  with Section 3.1 to the end of the Initial Term or for a
            period  eighteen (18) months from the date of notice of termination,
            whichever shall last occur.

      (b)   If terminated  during a Renewal Term, the Employee's  Base Salary in
            accordance  with  Section 3.1 for a period of  eighteen  (18) months
            from the date of notice of termination.

      (c)   If terminated by the Company electing not to renew this Agreement at
            the end of the Initial Term or at the end of any Renewal  Term,  the
            Employee's  Base Salary in accordance  with Section 3.1 for a period
            of twelve (12)  months  from the end of the  Initial  Term or twelve
            (12) months from the end of a Renewal Term, as the case may be.

      (d)   During  the any of the  above  defined  severance  periods  employee
            fringe  benefits,  car allowance and  outplacement  services will be
            provided until the employee  becomes  employed by another company or
            to the end of the severance period whichever is sooner.

7.    MISCELLANEOUS.

      Section 7.1 Assignment.

      This  Agreement  and the rights of  Employee  hereunder  are  personal  to
Employee, and neither this Agreement nor any right or interest herein or arising
hereunder shall be subject to voluntary or involuntary alienation, assignment or
transfer by Employee nor may Employee,  his estate or designated beneficiary use
this Agreement or any right of payment hereunder as a pledge or collateral;  for
any loan; provided, however, that this Agreement shall be binding upon and shall
inure to the  benefit  of  Employee  and his  heirs,  legatees,  estate or legal
representatives.  All rights and obligations of the Company under this Agreement
shall be  binding  upon and shall  inure to the  benefit of the  successors  and
assigns of the Company.

      Section 7.2 Governing Law.

      This  Agreement   shall  be  governed  by,  and  shall  be  construed  and
interpreted in accordance  with,  the laws of the State of Connecticut  (without
giving  effect to the doctrine of conflict of laws) and of the United  States of
America.

      Section 7.3 Notices.

      Any notice  which the Company is  required or may desire to give  Employee
hereunder shall be given by personal delivery or by registered or certified mail
or by private courier service,  with postage  prepaid,  addressed to Employee at
his address of record with the  Company,  or at such other place as Employee may
from time to time designate to the Company in writing. Any notice which Employee
is  required  or may  desire  to give the  Company  hereunder  shall be given by
personal  delivery or by  registered  or  certified  mail or by private  courier
service, with postage prepaid, addressed to the Company at its principal office,
or at such  other  office  as the  Company  may from time to time  designate  to
Employee in writing. Such notice shall be deemed given when delivered personally
or, if mailed, given two (2) days after the date of mailing.

      Section 7.4 Waiver.

       If  either  party  should  waive  any  breach  of any  provision  of this
Agreement,  such party shall not thereby be deemed to have waived any  preceding
or succeeding breach of the same or any other provision of this Agreement.




      Section 7.5 Entire Agreement; Modification; Severability.

      This  Agreement  constitutes  the entire  agreement of these  parties with
respect to the subject matter  thereof,  and all other prior or  contemporaneous
agreements of the parties with respect to such subject  matter,  whether oral or
written,  are hereby merged into this  Agreement.  This  Agreement  shall not be
changed,  modified or amended other than by a further written  agreement  signed
(i) by a duly authorized officer of the Company and (ii) by Employee.

      Section 7.6 Headings.

      The  titles  to  the  Sections  of  this  Agreement  are  solely  for  the
convenience of the parties and shall not be used to explain,  modify,  simplify,
or aid in the interpretation of the provision of this Agreement.

      IN WITNESS  WHEREOF,  the parties  hereto have executed and delivered this
Agreement  with  legal and  binding  effect as of the day and year  first  above
written.

                              /s/ PAUL D. SIOMKOS
                              --------------------------------------
                              Paul D. Siomkos ("Employee")


                              NOISE CANCELLATION TECHNOLOGIES, INC.,
                              a Delaware corporation (the "Company")

                              /s/ MICHAEL J. PARRELLA
                              --------------------------------------
                              By:   Michael J. Parrella
                                    President



Exhibit A         Schedule for Equity Participation Rights

Exhibit B         NCT  Standard  Employee's  Confidentiality,  Non-Competition
                  and Invention Agreement

Exhibit C         NCT Standard Benefits

Exhibit D         Employee stock Option Plan





                                                                     Exhibit A
Schedule For Equity Participation Rights

NCT will grant  100,000  shares to the  employee  upon  employee's  first day of
employment.

NCT will grant  500,000  options to  purchase  NCT shares at the price as of the
date of employment that will vest as follows:

            25% upon  employee's  first day of employment  25% at the end of the
            first  year  of  employment  25% at the  end of the  second  year of
            employment 25% at the end of the third year of employment

If the  Employee is  terminated  pursuant to Section 6.2 or clause (b) or (c) of
Section 6.3 all options will become immediately vested.



Accepted and Agreed to:



/s/ MICHAEL J. PARRELLA
- -----------------------
The Company, by:


/s/ PAUL D. SIOMKOS
- -----------------------
Employee







                                                                     Exhibit C



NCT Standard Benefits

1.    Annual vacation is three weeks

2.    Life Insurance of at least $250,000

3. Income Protection from Disability of at least 60% of base salary

4. All other benefits offered senior management