Obviously you first have to know frequencies of musical notes which you
can find at http://www.phy.mtu.edu/~suits/notefreqs.html.

Then you have to decide what shape your sound will have (square wave,
sine, triangle, DAC'd out waveform). The best method I have found is to
"step down" your basic waveform at a speed that is your note (or sound
effect) frequency. This method will make up for any "jitter" in the
timing of your output to your DAC and allow you to form multiple notes
at once, each with a differing envelope.

Obviously the amount of effort you give is in proportion to how
important to the product the musical reproduction is. If it is the
entire product, a lot, if it is just another method of alerting, not
much.

Tom Mariner


-----Original Message-----
From: pic microcontroller discussion list
[mailto:PICLIST@MITVMA.MIT.EDU] On Behalf Of CagaAnan, Rogelio
Sent: Monday, November 03, 2003 11:37 PM
To: PICLIST@MITVMA.MIT.EDU
Subject: [PIC]: Sound Generation

Could anybody direct me to some information regarding Sound Generation
using
any PIC device?
I am looking for something that would generate musical notes.

Thanks.



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