Hi folks,
>I don't think there would be any problem for the polysix to read an mp3-file
In fact as the tape dump audio just consists of either a 1200hz tone or a 600Hz
tone in rapid succession (or something like that, the freq's are probably wrong
but you get the idea)
and since MP3 encoding effectively does a vocoder on the data and splits it
all into frequency bands there might well be a really low bitrate sweet spot
where
it all works perfectly.
I'd offer to experiment myself but my polysix is up on blocks waiting for me to
get
the time to repair some leaky battery damage, if you play back via winamp
or another player that has a graphic EQ built in then turning all but the
500hz-2khz
sliders down would help too.
The tape dump type audio data is almost crying out for a specific compression
algorithm, the way I'd approach it is to have a (perhaps quite slow)
compression prog which analyses the wav file, works out which two keytones
are being used then saves a file with data on the two frequencies in the header,
and all the rest as straight binary. then the playback program just needs to
read the header,
synthesise a couple of sin wave samples of the right frequencies and play them
back
at the appropriate rate (oops.. got to get that stored in the file header too)
That way all your patch dumps will be at the most a few k each, probably less!
Just thinking out loud,
Robin.
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