经典的灰度共生矩阵纹理计算方法，ofdm系统仿真 含16qam调制 fft 加窗 加cp等模块，关于超声波倒车雷达测距的。- Classic GLCM texture calculation method, ofdm system simulation including 16qam modulation fft windowing modules plus cp, About ultrasonic parking radar ranging.

完整的基于HMM的语音识别系统，FIR 底通和带通滤波器和IIR 底通和带通滤波器，关于超声波倒车雷达测距的。- Complete HMM-based speech recognition system, Bottom-pass and band-pass FIR and IIR filter bottom pass and band-pass filter, About ultrasonic parking radar ranging.