[sdiy] Reverse engineer an EPROM encoding?

MTG grant at musictechnologiesgroup.com
Wed Oct 16 20:04:37 CEST 2013


You mean where the bytes are changes to the output level rather than 
output level itself? I thought of that too and it's not.

I can take an existing drum WAV sample and modify to fit 12-bit along 
with this RFC 3190 "compression" and it's pretty reminiscent of the 
original.  You can see in my latter photo that it would be. But 
distorted enough from original to be a no-go.

I think it is some kind of Chord/Step or fixed point thing. Floating 
point seems too sophisticated for this period. At this point we haven't 
even seen 16-bit drum machines (HR-16) for instance.

GB


On 10/16/2013 10:52 AM, Ove Ridé wrote:

> Could it be a delta encoding?
>
>



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