DocumentCode
3029456
Title
PCM speech compression via ADPCM/TASI
Author
McPherson, T.R., Jr. ; Neal, J. B O, Jr. ; Stroh, P.W.
Author_Institution
North Carolina State University, Raleigh, NC
Volume
2
fYear
1977
fDate
28246
Firstpage
184
Lastpage
187
Abstract
A data compression technique, Adaptive Differential PCM (ADPCM) with Time Assignment Speech Interpolation (TASI), that is capable of reducing the bit rate required for PCM encoded speech is described. The particular case of 2:1 compression in a T1 system environment is described in detail and evaluated using computer simulation. The ADPCM/TASI system has wide dynamic range, little degradation under loading, than standard PCM. Signal-to-noise ratios provide an objective metric. An audio tape containing computer processed speech for various ADPCM/TASI systems in various environments accompanies this presentation.
Keywords
Audio tapes; Bit rate; Computer simulation; Data compression; Degradation; Dynamic range; Interpolation; Phase change materials; Signal to noise ratio; Speech;
fLanguage
English
Publisher
ieee
Conference_Titel
Acoustics, Speech, and Signal Processing, IEEE International Conference on ICASSP '77.
Type
conf
DOI
10.1109/ICASSP.1977.1170329
Filename
1170329
Link To Document