Faculté des sciences

Optimized real time implementation of spectral analysis and quantization for the CEOP FS1016 speech coder

Grassi, Sara ; Ansorge, Michael ; Pellandini, Fausto

In: Proceedings of the International COST 254 Workshop on Intelligent Communication Technologies and Applications, with Emphasis on Mobile Communications, 1998, vol. 254, p. 33-38

The optimized implementation of the CELP FS1016 spectral analysis and quantization block on a DSP56001 is presented in this paper. This implementation can be seen as a preparation for an optimal low power, small size, custom VLSI implementation. The optimization is based on careful algorithmic optimization and study of the fixed-point quantization effects. Algorithmic optimization deals with the... More

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    Summary
    The optimized implementation of the CELP FS1016 spectral analysis and quantization block on a DSP56001 is presented in this paper. This implementation can be seen as a preparation for an optimal low power, small size, custom VLSI implementation. The optimization is based on careful algorithmic optimization and study of the fixed-point quantization effects. Algorithmic optimization deals with the choice and modification of the algorithms, their optimal interrelation in the whole system, and a good match between algorithms and architecture. Using algorithmic optimization, a saving of 66 % was obtained in the DSP56001 implementation of the LSP calculation functional block.