There is an AN from Atmel, that describes how to do it !!
Bye
Javier

----- Original Message -----
From: Nicholas Irias <nirias@PACBELL.NET>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Saturday, August 26, 2000 2:47 PM
Subject: [PIC]: Playing WAV files on a PIC


> I am planning to use a PIC to play a few WAV files for sound effects.  My
> current plan is to store the WAV file data block in EPROM, use the PIC to
> pull sequential data samples, and use one of the PWMs to generate an
analog
> output for each sample.
>
> My question has to do with mixing two or more WAVs so they can be output
on
> a single PWM.  Assuming that the sample rates are identical, is this just
as
> simple as adding one sample point from each data stream and using the sum
> for an output?  Or is there some greater trickery involved?  The question
> arises because I have only two PWM outputs on the PIC and I might have
three
> or more sounds superimposed.
>
> By the way, if it sounds like I am approaching this problem the hard way,
> please let me know.
>
> -Nicholas
>
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