Optimization of CS-ACELP Voice Code Algorithm and Its Implementation on DSP
-
摘要: 针对CS-ACELP语音编码算法编码复杂度较高、DSP实时实现比较困难的问题,提出了一种可降低CS-ACELP语音编码算法复杂度的优化方法,分析了CS-ACELP语音编码算法原理,详细介绍了优化的CS-ACELP语音编码算法从固定码本搜索上降低算法复杂度的实现,并给出了在16位定点DSP芯片TMS320VC5402上实现CS-ACELP语音编解码方案的硬件及软件设计。实验结果表明,优化的CS-ACELP语音编码算法降低了运算复杂度,提高了运行速度,重建的语音符合标准的编解码要求。
-
关键词:
- 语音编码 /
- CS-ACELP算法 /
- 优化 /
- G.729 /
- DSP /
- TMS320VC5402
Abstract: In view of the problem that CS-ACELP voice code algorithm has higher coding complexity and is difficult to realize real-time on DSP,the paper proposed an optimization method that could reduce complexity of CS-ACELP voice code algorithm.It analyzed principle of CS-ACELP voice code algorithm,introduced implementation that optimized CS-ACELP voice code algorithm reduced complexity in searching fixed codebook,and gave design of hardware and software of the scheme of code and decode of CS-ACELP voice implemented on 16 bits fixed-point DSP chip TMS320VC5402.The experiment result showed that the optimized CS-ACELP voice code algorithm can reduce operation complexity and improve running speed,and reconstructed voice meets the standard demands of code and encode.-
Key words:
- voice code /
- CS-ACELP algorithm /
- optimization /
- G.729 /
- DSP /
- TMS320VC5402
-
点击查看大图
计量
- 文章访问数: 35
- HTML全文浏览量: 2
- PDF下载量: 3
- 被引次数: 0
下载:
