ANNAPOLIS, MARYLAND, October 1, 2007 – Sonex Research, Inc. (“Sonex” or the “Company”) is pleased to announce that effective today, Corporate Stock Transfer of Denver, Colorado, is serving as the stock transfer agent and registrar for Sonex common stock.  Corporate Stock Transfer is consistently ranked among the top firms for Overall Client Satisfaction in comparison to other national transfer agents in annual independent industry surveys.

All requests for certificate transfers, including restrictive legend removal, transfers to estates, etc., as well as replacement of lost certificates, are to be submitted to Corporate Stock Transfer, as follows:

Corporate Stock Transfer and Trust Co.

3200 Cherry Creek Drive South, Suite 430

Denver, CO  80209

Telephone (303) 282-4800

Fax (303) 282-5800

Email: knaughton@corporatestock.com

Telephone inquiries should be directed to our account managers Carylyn Bell or Shari Humpherys.  Sonex has confidence that your needs will be addressed promptly and efficiently by Corporate Stock Transfer.  If you have any issues that cannot be resolved by Corporate Stock Transfer, please contact George E. Ponticas, Sonex CFO and Secretary.

NOTICE: Please be advised there is an important change from past practice at Sonex.  Under our previous outside transfer agent and while Sonex served as its own transfer agent recently, individual transaction processing fees were absorbed by Sonex.  Such nominal fees charged by Corporate Stock Transfer will now be billed directly by Corporate Stock Transfer to the requesting shareholder and/or stockbroker.

Contact: George E. Ponticas, CFO, Sonex Research, Inc., tel: 410-266-5556, email: george.ponticas@sonex-na.com, website: www.sonexresearch.com.