可以通过开发板采集声音，并通过电脑端显示波形，适用于 5402 dsp 开发板-Development board can be collected through the sound wave through the PC show for 5402 dsp development board

数字信号处理内容，是基于DSP,在CCS环境下用5402来实现信号的DFT变化。-Digital signal processing content that is based on DSP, CCS environment by 5402 to achieve DFT signal changes.