快速傅里叶变换在单片机中的实现,可用来显示生音波形

男声，女声，乐器声音频谱分析和傅里叶转换-Male, female, musical instruments, sound spectrum analysis and Fourier transform

matlab对持续音和时变音的频谱分析，快速傅里叶变换-matlab spectrum when continuous tone accented analysis, fast Fourier transform

利用号码双频表，利用傅里叶变换，实现由电话按键音，识别电话号码功能。需要自己录一段电话按键音。运行mainprocess自动输出识别号码。-Dual-use table numbers, Fourier transform, achieved by touch-tone telephone, phone number identification function. It needs its own record a touch-tone phone. Mainprocess run autom

对吉他的单音进行短时傅里叶变换 选取主音旋律(The guitar tone of the short time Fourier transform from the melody)