This application report introduces and describes an MP3†/AAC‡ audio player for use with the

TMS320C54x digital signal processor (DSP) devices. This audio player is based on Reference

Framework Level 3 (RF3). Reference Framework for eXpressDSP Software is a startware

for developing applications that use DSP/BIOS and the TMS320 DSP Algorithm

Standard.

The main challenge of this application is to use LIO-based drivers for bitstream input and

pulse code modulation (PCM) output. There is a large variety of input/output (I/O) devices.

This approach provides great code reusability. As a result, developers can adapt this application

for their own systems with minimum efforts.

This document also describes a number of DSP/BIOS techniques for decompression

applications.

MP3: ISO-MPEG Audio Layer-3 standard (ISO/IEC 11172-3, 13818-3)

AAC: ISO-MPEG2 Advanced Audio Coding standard (ISO/IEC 13818-7)