[sdiy] Casio VL-TONE

[Richie Burnett]

Thanks to all those who emailed offering help with this.  I've now got some 
pristine quality 192kHz 16-bit samples of the drum sounds in question. 
These revealed precisely the information I was looking for.

For anyone interested, I can now clearly see that the snare sound is made up 
of a Pseudo Random Bit Sequence from a 15-bit Linear Feedback Shift Register 
clocked at about 82150 Hz and using the polynomial x^15 + x^14 + 1   An 
amplitude envelope that decays in 15 discrete steps is then applied to this 
noise.

It's amazing what you can see from a decent hi-res audio recording!

Many thanks,

-Richie,