This is an example on how to play a raw 8bits 8KHz PCM audio sample using one of the ATmega32u4 PWM pins and the Timer3 library: But I couldn't make it work in Arduino Leonardo or Teensy 2.0, both ...

Project Summary: Used the PCM library from the arduino libraries, to playback a sample of a sound downloaded from the internet. Amplified this signal using a LM380N amplifier. Current time can be set ...