现代数字信号处理的几种算法对语音噪声的消除以及模拟调制AM，数学中的希尔伯特变换-Modern Digital Signal Processing Algorithms for the elimination of noise on the voice, as well as analog modulation AM, Hilbert Transform in Math

simulink模拟的二阶sigma delta调制器 可以提高传输速率 中间用到了半带滤波器和FIR滤波器CIC滤波器 进行过采样-Simulink simulation of second order sigma delta modulator can improve the transmission rate use among the half took filter and FIR filter CIC filter sample