A good job well done: the latest wireless codecs deliver wireline quality

Author

Thorpe, Leigh A. ; Coverdale, Paul V.

Author_Institution

Nortel, Ottawa, Ont., Canada

fYear

1997

fDate

7-10 Sep 1997

Firstpage

85

Lastpage

86

Abstract

The results of a listening test conducted at Nortel on behalf of the CDMA Development Group (CDG) suggest that the new crop of wireless codecs are all able to deliver voice quality comparable to wireline with single encoding over a clean wireless transmission channel. The codecs were tested with clean speech, varying input level, background noise, and tandem encoding. Given these findings, we hope to provoke discussion about the next challenges facing speech coding researchers and codec designers. The potential issues are: codec robustness to errors, noise reduction, and very-low bit rate codecs for a variety of applications

Keywords

cellular radio; code division multiple access; code standards; land mobile radio; noise; speech codecs; speech coding; speech intelligibility; speech processing; telecommunication equipment testing; telecommunication standards; time division multiple access; CDMA Development Group; CDMA standards; GSM; Nortel; North American TDMA; PCS1900; background noise; clean speech; listening test results; speech coding; tandem encoding; varying input level; voice quality; wireless codecs; wireless transmission channel; wireline quality; Background noise; Bit rate; Crops; Multiaccess communication; Noise reduction; Noise robustness; Speech codecs; Speech coding; Speech enhancement; Testing;

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.1997.623908

Filename

623908