>At this proof-of-concept stage, time spent trying to make these
>chips produce half-decent sound at other frequencies is probably
>going to be wasted time (I really don't need any more of that)
>and it would be better all round to use a longer-duration chip

Sounds like it is time to look at using a PIC to store the sound. Check out
Olins HAL project, which also has a separate program to put standard WAV
files into a data format suitable for sticking in the FLASH.

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