The implementation and optimization of AMR speech codec on DSP

  title={The implementation and optimization of AMR speech codec on DSP},
  author={Jie Yang and Sheng sheng Yu and Mian Zhao},
  journal={2007 International Symposium on Intelligent Signal Processing and Communication Systems},
The adaptive multi-rate (AMR) is the mandatory speech codec for GSM system, ranging from 12.2 kbps down to 4.75 kbps. To satisfy the requirement of need for both audio and video simultaneously, a kind of hardware and software of AMR speech encoder based on high-performance chips TMS320C64X DSP is proposed. Considering the limited resource of DSP chips, the optimization scheme is referred to later. The result shows that the CPU-load is reduced from 38 percent to 4 percent. And the time of… CONTINUE READING
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