Multiprocessor implementation of an ATC audio codec
- 13 January 2003
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- No. 15206149,p. 1981-1984
- https://doi.org/10.1109/icassp.1989.266846
Abstract
A source coding scheme for high-quality audio signals based on adaptive transform coding is presented. Using the well known ATC algorithm of R. Zelinski and P. Noll (1977) as a starting point, the authors have developed an algorithm that features psychoacoustic weighting and a joint bit allocation to stereo channels. The real-time implementation uses a four-node processor network, each node consisting of a T800 transputer and a DSP32 signal processor. Both the codec optimization and the evaluation of subjective quality are facilitated by the fact that many of the codec parameters can be changed online.Keywords
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