Title :
Background noise suppression for speech enhancement and coding
Author :
Ramabadran, Tenkasi V. ; Ashley, James P. ; Mclaughlin, Michael J.
Author_Institution :
Chicago Corp. Res. Lab., Motorola Inc., Schaumburg, IL, USA
Abstract :
A background noise suppression system developed by Motorola is included as a feature in IS-127, the TIA/EIA standard for the enhanced variable rate codec (EVRC) to be used in CDMA based telephone systems. We describe the algorithm used in this system and its implementation. We then present subjective listening test results showing the advantages of using such a system as a prefilter to a speech coder
Keywords :
acoustic noise; acoustic signal processing; code division multiple access; noise abatement; speech codecs; speech coding; speech enhancement; telephony; CDMA based telephone systems; IS-127; Motorola; TIA/EIA standard; acoustic background noise; algorithm; background noise suppression system; enhanced variable rate codec; prefilter; speech coder; speech coding; speech enhancement; subjective listening test results; Background noise; Code standards; Codecs; Filters; Frequency domain analysis; Multiaccess communication; Noise cancellation; Signal to noise ratio; Speech enhancement; Standards development;
Conference_Titel :
Speech Coding For Telecommunications Proceeding, 1997, 1997 IEEE Workshop on
Conference_Location :
Pocono Manor, PA
Print_ISBN :
0-7803-4073-6
DOI :
10.1109/SCFT.1997.623887
