You usually run the PWM signal through a low pass filter, which extracts the audio. Then put the audio signal through a pre-amplifier etc.
On the other hand, if noise is what you want in your audio, then don't filter the PWM.
You usually run the PWM signal through a low pass filter, which extracts the audio. Then put the audio signal through a pre-amplifier etc.
On the other hand, if noise is what you want in your audio, then don't filter the PWM.