Real-time MP3 Playback using TI TMS320C6416 Fixed-point DSP

Course Content

Linear and circular convolution

Composing customized assembly code

Composing FFT function from scratch and intrinsic functions

Enhanced DMA configuration and ping-pong buffer

Audio Codec configuration with MCBSP

TI RTOS configuration: HW/SW interrupts, Process scheduling Performance profiling and optimization

Final Project: Implementation of real-time MP3 playback

Phase 1 (Iek-Sam Cheong): Code search and function verification in Visual Studio

Phase 2 (Jia-Wei Wang): driver design and optimization

Method for Speed-up

1. Set up cache and compiler optimization at level 3 (-o3)
2. Huffman decode/quantization/rounding look-up table
3. Replacement with intrinsic DCT function

Result

1. Bitrate：96Kbps
2. Elapse time：15 sec
3. type：mono
4. execution time : 2.34 sec (measured within decode function)