Realization of PCM to huffman coding for voice
Deng Xiang-y · Automation and Instrumentation · 2010
For the traditional analog voice PCM using equal-length binary code of folding￡-its band rate is higher than others and system resources of transmission and processing required is greater.Based on the non-uniform quantification of PCM and the probability distribution of voice sampling signals,The variable-length encoding is used in 13 line A Law characteristic of pressure and expansion to decrease the entropy redundancy of information source.In turn,the compression coding of digital voice is obtained about MOS 4.0,and the circuit of compression is designed using the EDA technology based on CPLD.