Sounding Off With WAV Files

摘要

As embedded programmers, we spend a lot of time controlling LEDs and other light sources - many times, a blinky light is a means to make our project "speak." The next logical step, then, is audio output.This may be as simple as a "beep" or "boop" generated on an I/O pin, but in a media-saturated, media-savvy world, that's hardly enough anymore. Yes, we can use an external controller like the Rogue uMP3 to play an audio file or - with some fairly simple circuitry and a bit of code - we can play high quality audio files right out of our project. In fact, using the Propeller, we can even play audio while doing other things.