PureAudio

Andrea Electronics Corporation has introduced a new software algorithm called PureAudio to complement its line of patented and patent-pending Digital Signal Processing (DSP) technologies for enhancing audio communications and speech-centric computer applications. PureAudio is designed to greatly reduce background noise that is essentially repetitive in nature, such as "hiss and hum" system induced electrical noise, as well as diffused/isotropic environmental noise. PureAudio differs from patented far-field DSDA in the manner in which it identifies and removes noise from the audio signal, thus providing significant increases in the system's signal-to-noise ratio. Whereas DSDA technology uses spatial acoustic information from a multiplicity of microphone elements to identify and focus on a desired signal to reduce acoustic background noise, PureAudio samples an existing audio signal during intervals when speech or audio signals do not occur, to subtract the spectrum of embedded noise. The PureAudio software algorithm runs on standard digital signal processors (DSPs) and microprocessor platforms, as well as Windows based devices. PureAudio was developed by Lamar Signal Processing, Ltd., an Israeli-based research and development company and wholly-owned subsidiary of Andrea Electronics Corporation. PureAudio operates as a stand-alone enhancement algorithm or in conjunction with Andrea's far-field DSDA adaptive array system.

Andrea Electronics Corporation, 45 Melville Park Road, Melville, NY 11747. Tel: 631-719-1937; Fax: 631-719-1826.