DocumentCode
1112872
Title
Efficient microprocessor-based tandemable 32 kbit/s ADPCM/PCM transcoder
Author
Hangartner, R.D. ; Jain, V.K.
Author_Institution
University of South Florida, Tampa, FL
Volume
35
Issue
8
fYear
1987
fDate
8/1/1987 12:00:00 AM
Firstpage
1203
Lastpage
1207
Abstract
The CCITT has adopted a Standard for a tandemable 64 kbit/s pulse code modulation (PCM) 32 kbit/s adaptive differential pulse code modulation (ADPCM) transcoder algorithm [1], [2]. This correspondence suggests slight changes in the adaptive quantizer and prediction filter which facilitate microprocessor realization while potentially improving performance. These variations are then incorporated into a real-time hardware and software system based on a single TI TMS 32010 each for the encoder and decoder. Objective and subjective results on the performance of our design are also presented.
Keywords
Adaptive filters; Code standards; Decoding; Hardware; Microprocessors; Modulation coding; Phase change materials; Pulse modulation; Real time systems; Software systems;
fLanguage
English
Journal_Title
Acoustics, Speech and Signal Processing, IEEE Transactions on
Publisher
ieee
ISSN
0096-3518
Type
jour
DOI
10.1109/TASSP.1987.1165261
Filename
1165261
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