A-律μ-律压扩的C54X实现方法研究

Implementations of A-Law and μ-Law Companding Using C54X

文中描述了A-律μ-律压扩的TMS32OC54X实现。首先介绍了语音信号的基本特征,对压扩理论进行了分析,接着阐述了整个算法。针对TMS32OC54X芯片的具体特点,提出了系统要求与编码方案,结合芯片软硬件条件,详尽讨论了A-律μ-律压扩的DSP编码实现过程。最后验证了代码的速度并给出了对存储空间的要求。通过对芯片软硬件资源的充分利用,使所需的MIPS和对内存的要求同时降至理想状态。

Presented in this article is the implementation of A-Law and μ-Law companding algorithm for the DSP（TMS320C54X）. Theoretical material regarding companding and speech signals is provided first,followed by thorough explanations of the algorithms. System requirements and coding scheme are discussed in detail with the key features of the DSP chips. Finally,the code is benchmarked in terms of its speed and memory requirements. Both the MIPS and the memory requirements are reached the idea.