verilog代码。利用音频信号上采样8倍，然后对audio做pwm调制。-verilog code.upsample audio date 8 times and output pwm of audio.

musicdsp source code archive-Analysis Beat Detector Class Coefficients for Daubechies wavelets 1-38 DFT Envelope detector Envelope Detector class (C++) Envelope follower with different attack and release Fast in-place Walsh-Hadamard Tra

PWM音频驱动，适用于linux MX258 cpu-PWM AUDIO Driver, for linux mx258 cpu