Title :
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
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;
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.1997.623908
