[sdiy] Casio VL-TONE

[Richie Burnett]

Hi All,

Does anyone own a Casio VL-TONE keyboard (famously used by Trio for "Da da 
da") and would be willing to record a few seconds of that beat at 16-bit 
96kHz for me?

I'm actually trying to figure out how the snare sound is produced in order 
to develop a digital model.  (I've already figured that the two tom sounds 
are each just a square-wave oscillator with a linearly decaying amplitude 
envelope applied and a DC blocking HPF.  They sound like blips from the old 
video game "pong"!)  I'm fairly certain that the snare sound is based around 
a burst of noise produced by a linear-feedback shift-register, but would 
like to determine what the generator polynomial is and what the clocking 
rate is if possible.  Unfortunately I've only got a few low-res samples off 
the internet to go by, and very little actual technical information about 
the synthesis.  Any info would be most helpful, otherwise I'll have to grab 
one s/h off ebay.

Best regards,

-Richie,