32kbs ADPCM/PCM transcoder using TI-320 DSP microprocessor
- 23 March 2005
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- Vol. 10, 1421-1424
- https://doi.org/10.1109/icassp.1985.1168090
Abstract
The CCITT has recently proposed a Draft Recommendation for a tandemable 64 kbps PCM to 32 kbps ADPCM transcoder algorithm [1],[2]. This paper presents a real-time hardware and software realization of the algorithm based on a single TI TMS 32010 each for the encoder and decoder. Objective and subjective results indicate that our changes in the adaptive quantizer and prediction filter, which make this single µP chip realization possible, do not degrade system performance relative to the CCITT algorithm.Keywords
This publication has 4 references indexed in Scilit:
- Synchronous Tandem Algorithm for 32-kbit/s ADPCMIEEE Transactions on Communications, 1985
- An Adaptive PCM System Designed for Noisy Channels and Digital Implementations*Bell System Technical Journal, 1978
- A Robust Adaptive QuantizerIEEE Transactions on Communications, 1975
- Adaptive Quantization with a One-Word MemoryThe Journal of the Acoustical Society of America, 1973