用C51通过傅李叶运算在液晶屏上显示音乐频谱，采样是4.47K-Fu Lee leaves with C51 through operations on the LCD display musical spectrum, the sampling is 4.47K

音乐魔方：对音频信号进行采集，通过FFT变换得到频谱信息，将频谱信息在LED阵列上显示。-Music Cube: an audio signal acquisition, spectral information obtained by FFT transform, the spectral information is displayed on the LED array.