Design and Implementation of Fixed-point Algorithm for MP3 Audio Decoder

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.