>I have tried Romans System and while it is a marvel with what can be done
>with one or two pins the quality is a little rough. Another method I know
>some one has done is to convert wave tables to an 8 bit value then feed
that
>in to a 8 bit R ladder with very good results. In essence all that is
needed
>is to convert wave tables to data tables. Unfortunately the program and
code
>is part of a book his is writing, so will not be available for a while.

well have you tried Olin's HAL project? IIRC the audio in that is done by
using the 8 bit data derived from a WAV file, to drive the PWM to get sound.
Within a 16F876/7 he can have about 7 seconds of sound, but it should be
possible to use external memory to achieve almost unlimited play times if
required.

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