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

fYear

1997

fDate

7-10 Sep 1997

Firstpage

43

Lastpage

44

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Speech Coding For Telecommunications Proceeding, 1997, 1997 IEEE Workshop on

Conference_Location

Pocono Manor, PA

Print_ISBN

0-7803-4073-6

Type

conf

DOI

10.1109/SCFT.1997.623887

Filename

623887