That is hacking a software emulation of the voice chip, which is very
different than hacking the physical voice chip ;)
What you'd be interested in is modding the poly-800 to take external input
through the poly's envelopes and filter.
Tim
On Sat, 12 Jan 2008, matijnboshoven wrote:
> hello,
> I found on this site some info on the poly800 voice chip. Its been
> used by many old video games, these didn't use the normal synth
> waveshapes. And the info on this site suggest that it must be possible
> to change the internal sounds of the voice chip.
> http://www.mameworld.net/maws/mamesrc/src/emu/sound/msm5232.c
> Quote from site:
> #ifdef SAVE_SAMPLE
> sample[8]=fopen("sampsum.pcm","wb");
> #endif
> #ifdef SAVE_SEPARATE_CHANNELS
> sample[0]=fopen("samp0.pcm","wb");
> sample[1]=fopen("samp1.pcm","wb");
> sample[2]=fopen("samp2.pcm","wb");
> sample[3]=fopen("samp3.pcm","wb");
> sample[4]=fopen("samp4.pcm","wb");
> sample[5]=fopen("samp5.pcm","wb");
> sample[6]=fopen("samp6.pcm","wb");
> sample[7]=fopen("samp7.pcm","wb");
> #endif
>
> I don't have the knowledge to do this, but the people who hacked the
> OS should be able to do it.
> This would put this (rather limited) synth into an other realm.
> An example would be: PWM with 2 inverted and detuned saw's. But the
> sky is the limit ofcause.
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> Yahoo! Groups Links
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