基于TM1300实现AMR-WB语音压缩算法优化

Implementation and Optimization of AMR-WB Speech Coder Based on TM1300

本文首先简要介绍了AMR-WB语音压缩算法的基本原理,描述了媒体处理机TM1300芯片的体系结构;然后重点论述了基于TM1300硬件平台下对AMR-WB定点算法各种优化方法;最后给出了优化前后主要函数处理速度比较,并对结果进行了分析。

In this paper,a brief introduction to the algorithms of AMR-WB, the architecture and software development environments of the fixed pointed media processor TM1300 were firstly carried out, some optimization techniques of AMR-WB fixed point algorithms, such as custom operation, loop unrolling and optimization, restrict pointer, cache optimization were described in detail subsequently. Then an example on optimization techniques was given. Finally the paper presents the performance comparison and analyzes the results.