通过TLC320AD50采集音频信号(f.max<10kHz)，编写DSP的FFT处理程序（自定频谱分辨力），获得幅频特性之后，在点阵液晶(128*64)中大致显示出幅频图。并在液晶中用文字显示频率幅值前三的频率值。-By TLC320AD50 capture audio (f.max < 10kHz), the preparation of the FFT DSP processing (custom spectral resolution), obtained after the amplitude-frequency characteristics, in the dot-matrix LCD (128* 64) in general show that the amplitude frequency diagram. LCD used in the first three words show the frequency of the frequency amplitude value.