Melville, NY, April 04, 2002 -- Andrea Electronics Corporation (AMEX: AND), a leading manufacturer of hardware and software technologies that optimize the performance of speech-enabled applications and other voice user interfaces, announced today that the U.S. Patent and Trademark Office has issued the Company a patent (U.S. Patent No. 6,363,345) for Andrea's PureAudio noise reduction technology. Specifically, this patent provides claims directed to Andrea's ability to study and estimate the interfering ambient noise environment around a desired speech signal, and efficiently and effectively attenuate the noise level leaving a clearer and cleaner speech signal. This technology is very effective in eliminating stationary noise signals as well as ambient diffused noises generated by, for example, computer fans, system-inherent electrical interference, and air conditioning systems used in vehicles, offices and homes. By using Andrea's PureAudio, a user will experience better and clearer communication as well as better speech recognition performance. It can be implemented in a stand-alone or embedded form factor, and it can be used with either single element microphone products or in conjunction with multiple microphone element products.

"This technology is unique for a number of reasons ," said Joseph Marash, Chief Technology Officer of Andrea Electronics Corporation. "It allows us to accurately study and estimate unwanted noise even when it is heavily masked and embedded within speech signals, and it allows us to quickly and adaptively study stationary and non stationary noises. The result is a very stable, quick, accurate and efficient algorithm that is characterized by low musical noise, exceptionally short latency, clear speech quality and overall high levels of noise reduction."

About Andrea Electronics:
Andrea Electronics Corporation designs, develops and manufactures audio technologies and equipment for enhancing applications that require high performance and high quality voice input. The Company's patented Digital Super Directional Array (DSDA®), patent-pending Directional Finding and Tracking Array (DFTA®), patented PureAudio®, and patented EchoStop™ far-field microphone technologies enhance a wide range of audio products to eliminate background noise and ensure the optimum performance of voice applications. Applications for the Company's technologies include: speech recognition programs, Internet telephony, video/audio conferencing, automobile PCs, home automation systems and hand-held devices, among others. Visit Andrea Electronics' website at www.AndreaElectronics.com or call 1-800-442-7787.

This press release may contain ``forward-looking statements'' within the meaning of the Private Securities Litigation Reform Act of 1995. The words ``anticipates,'' ``believes,'' ``estimates,'' ``expects,'' ``intends,'' ``plans,'' ``seeks,'' variations of such words, and similar expressions are intended to identify forward-looking statements. These statements are not guarantees of future performance and involve matters that are subject to certain risks, uncertainties and assumptions that are difficult to predict, including economic, competitive, governmental, technological and other factors, that may affect the business and prospects of Andrea Electronics Corporation (the ``Company''). These and other similar factors are discussed under the heading ``Cautionary Statement Regarding Forward-looking statements'' included in the Management's Discussion and Analysis of Financial Condition and Results of Operations in the Company's Annual Report on Form 10-K and Annual Report not filed with the SEC, and in documents subsequently filed by the Company with the Securities and Exchange Commission.