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语音信号MELP编码的研究与实现

语音信号MELP编码的研究与实现

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【摘要】 对该编码技术进行了深入的研究,并在此基础上实现了2.4 kbps MELP声码器的计算机模拟,提出了对MELP多级矢量量化搜索方法的改进,以及用两片TMS320C31并行处理实现MELP算法的硬件电路设计。

【Abstract】 In this paper it is firstly analyzed what the MELP synthesis model modifies as composed to LPC. Secondly a 2.4 kbps vocoder based on MELP algorithm is simulated in PC platform. Eventually according to analysis of results an algrorithm method is introduced aimed at improving the coding performance of Multi stage vector quantization. Furthermore with a side by side operation mechanism of MELP vocoderusing two TMS320C31 DSP we desigin the hardware circuit to realize the MELP algorithm.

  • 【分类号】TN912
  • 【被引频次】16
  • 【下载频次】190
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