Accession Number : ADA130390

Title :   Computerized Audio Processor.

Descriptive Note : Final technical rept. Jul 80-Aug 82,

Corporate Author : QUEENS COLL FLUSHING NY DEPT OF COMPUTER SCIENCES

Personal Author(s) : Weiss,Mark R ; Aschkenasy,Ernest

PDF Url : ADA130390

Report Date : May 1983

Pagination or Media Count : 39

Abstract : The Computerized Audio Processor (CAP) is a computer synthesized electronic filter that removes interference from received or recorded speech signals. The CAP automatically detects and attenuates impulse sounds and tones (e.g., ignition noise, switching transients, whistles, chirps, hum, buzzes, FSK telegraphy, etc). It also attenuates wideband random noise. All operations of the CAP are fully automatic. Input signals are processed in real time, with a maximum lag of 340 msec. The CAP implements three proven signal processing techniques. One of these (IMP) virtually eliminates most loud impulse noises. A second technique (DSS) automatically detects tones and attenuates them by up to 46 dB. The third technique (INTEL) provides up to 18 dB attenuation of wideband random noise.

Descriptors :   *Acoustic filters, *Noise reduction, *Computer applications, *Interference, Signal processing, Speech, Impulse noise, Acoustic detection, Acoustic attenuation, Audio tones, Automatic, Real time, Narrowband, Broadband

Subject Categories : Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE