基于ARC700的MP3解码优化技术

Optimization Technology of MP3 Decoding based on ARC700

ARC700是一种R ISC和DSP相结合的CPU体系结构,由于具有DSP结构和指令,在进行音频解码时具有较高的效率.针对FDM3000芯片,提出使用部分汇编和C语言结合的优化技术,可以在25MHz的CPU运行速率下实时解码MP3码流,实践证明该优化技术效果明显.

ARC700 is a CPU structure combining RISC-based architecture and DSP instruction and module which is powerfully effective in decoding audio codec and voice codec due to the DSP instruction and module. This paper attempts to prove that the technology involving partial assembly and C language on the basis of FDM3000 chips is able to decode MP3 stream when CPU runs at 25 MHz. Experiments show that this technology is effective.