基于DSP和FPGA的音频信号分析，是全国大学生电子大赛的一等奖作品。含有完整的分析，设计，原理图，器件选择，源代码。-Audio DSP and FPGA-based signal analysis, the first prize of the National Undergraduate Electronic contest works. Containing complete the analysis, design, schematics, device selection, and