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本文表述了一个4.2Kb/s码激励线性预测语音编码方案在单个DSP上的实时实现;提出了一个减少自适应码本搜索复杂性的算法;讨论了A参数转变为LSP参数的求解方法;描述了该编码方案在具有一片TMS320C30的商用开发系统上的实时实现过程。
This paper presents a real-time implementation of a 4.2Kb / s code-excited linear predictive speech coding scheme on a single DSP. An algorithm to reduce the complexity of adaptive codebook searching is proposed. The method of solving the transformation from A parameter to LSP parameter is described. The coding scheme in a commercial development system with a TMS320C30 real-time implementation process.