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