UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                   FORM 12b-25

                           NOTIFICATION OF LATE FILING

           (CHECK ONE): /  / Form 10-KSB / / Form 20-F / / Form 11-K
                         / X / Form 10-QSB / / Form N-SAR

   			    For Period Ended:  March 31, 2004

	    / / Transition Report on Form 10-K
          / / Transition Report on Form  20-F
          / / Transition Report on Form 11-K
          / / Transition Report on Form 10-Q
          / / Transition Report on Form N-SAR
          For the Transition Period Ended: ______________________________

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READ INSTRUCTION (ON BACK PAGE) BEFORE PREPARING FORM. PLEASE PRINT OR TYPE.
NOTHING IN THIS FORM SHALL BE CONSTRUED TO IMPLY THAT THE COMMISSION HAS
VERIFIED ANY INFORMATION CONTAINED HEREIN.
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If the notification  relates to a portion of the filing checked above,  identify
the Item (s) to which the notification relates:



PART 1 - REGISTRANT INFORMATION

                              Sonex Research, Inc.
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Full Name of Registrant

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Former Name if Applicable
                                23 Hudson Street
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Address of Principal Executive Office (Street and Number)

                              Annapolis, MD 21401
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City, State and Zip Code


PART II - RULES 12b-25(b) AND (c)

     If the subject  report could not be filed  without  unreasonable  effort or
expense  and  the  registrant  seeks  relief  pursuant  to Rule  12b-25(b),  the
following should be completed. (Check box if appropriate)


 /X/    (a) The reasons  described in reasonable detail in Part III of this form
            could not be eliminated without unreasonable effort or expense.
 /X/    (b) The subject annual report,  semi-annual report, transition report on
            Form 10-K, Form 20-F, Form 11-K or Form N-SAR, or portion thereof,
		will be filed on or before the fifteenth  calendar day following
            the  prescribed  due  date;  or  the  subject  quarterly  report  or
            transition  report on Form 10-Q, or portion thereof will be filed on
            or before the fifth  calendar day following the prescribed due date;
            and
 / /    (c) The  accountant's  statement or other exhibit  required by Rule 12b-
            25(c) has been attached if applicable.


PART III - NARRATIVE

     State below in reasonable  detail the reasons why Forms 10-K,  20-F,  11-K,
10-QSB,  N-SAR, or the transition  report or portion  thereof,  could not be
filed within the prescribed time period.

     Understaffing in the registrant's accounting department has resulted in the
     inability to complete the filing by the original due date.


PART IV - OTHER INFORMATION

(1)  Name and telephone number of person to contact in regard to this
     notification.

         George E. Ponticas          410               266-5556
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              (Name)             (Area code)       (Telephone number)

(2)  Have all other periodic  reports  required under Section 13 or 15(d) of the
     Securities Exchange Act of 1934 or Section 30 of the Investment Company Act
     of 1940 during the preceding 12 months or for such shorter  period that the
     registrant was required to file such report(s) been filed? If answer is no,
     identify report(s).
                                                            / X / Yes   /  / No
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(3)  Is it anticipated that any significant change in results of operations from
     the corresponding  period for the last fiscal year will be reflected by the
     earnings  statements  to be  included  in the  subject  report  or  portion
     thereof?
                                                            /   / Yes   / X / No

     If so, attach an explanation of the anticipated  change,  both  narratively
     and quantitatively, and, if appropriate, state the reasons why a reasonable
     estimate of the results cannot be made.



                              Sonex Research, Inc.
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                  (Name of Registrant as Specified in Charter)

     has caused this  notification to be signed on its behalf by the undersigned
     hereunto duly authorized.

Date:    May 12, 2004       By:          /s/ George E. Ponticas
      -------------------          -------------------------------------------
                                   George E. Ponticas, Chief Financial Officer


INSTRUCTION: The form may be signed by an executive officer of the registrant or
by any other duly  authorized  representative.  The name and title of the person
signing  the form  shall  be typed or  printed  beneath  the  signature.  If the
statement is signed on behalf of the registrant by an authorized  representative
(other than an executive officer), evidence of the representative's authority to
sign on behalf of the registrant shall be filed with the form.

__________________________________ATTENTION____________________________________
     INTENTIONAL MISSTATEMENTS OR OMMISSIONS OF FACT CONSTITUTE FEDERAL
          CRIMINAL VIOLATIONS (SEE 18 U.S.C. 1001).