>I am able to generate a frequency using an output port of a pic micro >controller, but it sounds like a buzz rather than a tone. What do I >need to do to digitally create a tone that 'sounds' like music rather >than a buzz? A trick I have used is to create a 256 byte lookup table in memory, then clock through the table with a DAC and output any complex wave you like. The 256 byte table can be captured from voices on a commercial synthesizer or other audio source. There will be no attack and decay envelope, but interesting and complex steady state sounds can be generated. Bryan Mumford Santa Barbara, California http://www.bmumford.com