用Matlab产生正弦波,矩形波,以及白噪声信号，并显示各自时域波形图 进行FFT变换，显示各自频谱图，其中采样率，频率、数据长度自选 做出上述三种信号的均方根图谱,功率图谱,以及对数均方根图谱 用IFFT傅立叶反变换恢复信号，并显示恢复的正弦信号时域波形图(fft analysis,plot rms spectrum,power density spectrum, etc.)

通过matlab设计的GUI界面实现语音信号的实时录入和频谱分析和滤波等处理，并能够显示各阶段时域波形及频谱图，滤波器种类及参数可调(Through the GUI interface designed by matlab, the real-time input of speech signal, spectrum analysis and filtering are realized, and the time-domain waveforms and spectrograms of eac

LED显示汉字 彩色音乐频谱 32X64 P4 LED彩色屏 STM32音乐频谱 装饰LED(LED Display Chinese Character Color Music Spectrum 32X64 P4 LED Color Screen STM32 Music Spectrum Decorative LED)

此代码基于pic16f877单片机，实现音频信号波形图和频谱图的显示(This code is based on PIC16F877 single chip microcomputer, and realizes the display of audio signal waveform and spectrum)