DocumentCode
759101
Title
On Soft-Decision Demodulation for PCM- and DPCM- Encoded Speech
Author
Jayant, N.S. ; Steele, R. ; Chan, Ngai Wai ; Schmidt, C.E.
Author_Institution
Bell Labs., Murray Hill, NJ
Volume
28
Issue
2
fYear
1980
fDate
2/1/1980 12:00:00 AM
Firstpage
308
Lastpage
311
Abstract
In a simulation of soft decision demodulation-interpolation for digital speech transmission, it has been noted that signal-to-noise ratio gains due to the technique are greater with nonadaptive and periodically adaptive quantizers than with instantaneously adaptive quantizers; further, the gains are greater with PCM than with differential PCM. Our results for nonadaptive PCM reinforce those in a recent analytical paper by Sundberg [1].
Keywords
DPCM coding/decoding; Speech coding; Additive noise; Additive white noise; Amplitude modulation; Demodulation; Gaussian noise; Noise level; Phase change materials; Signal to noise ratio; Speech analysis; Speech coding;
fLanguage
English
Journal_Title
Communications, IEEE Transactions on
Publisher
ieee
ISSN
0090-6778
Type
jour
DOI
10.1109/TCOM.1980.1094645
Filename
1094645
Link To Document