摘要： 提出了一种用于嵌入式系统的MP3定点解码算法。该算法的核心是用定点数和定点计算代替浮点算法,并对MP3解码的各个过程进行优化设计。该算法在以ARM处理器为核心的嵌入式系统上完成了代码实现,经过FPGA验证和性能分析表明,其解码速度和音质完全可以达到设计要求。

关键词: 定点算法, MPEG, 音频解码

Abstract: This paper presents a fixed-point MP3 decoding algorithm for embedded systems. The key improvement is fixed-point integers and routines are used instead of float point ones and the most procedures are optimized for high performance. This algorithm has been implemented in ARM-based SoC system and the result satisfies decoding efficiency and music quality for real-time playback in FPOA development board.

中图分类号: 

• TP391.4