Speech Signal Compression DSP Realization with Virtual-Value Mapping Coding

摘要

Theoretically based on wavelet transform, a sort of virtual value mapping coding algorithm about speech signal compression is analyzed and designed in the light of frequency division character of wavelet packet transform in this paper. The algorithm is also realized on TMS320VC5402 DSP. The experiment shows that the algorithm can not only reduce the rate of coding and the space of memory effectively but also give small reconstructed-signal distortion