[AH] Re: [sdiy] TB-303 cpu question - impossible

Seb Francis seb at burnit.co.uk
Wed Nov 16 12:30:17 CET 2005


Oakley Sound wrote:

>> yeah, thing is, it starts interpolating toward the new
>> pitch before the note is triggered.
>
>
> I am very sure it doesn't. The slide starts to happen when the note is 
> gated. No earlier.
>
> Its a long time since I looked into this but I couldn't see any 
> pretriggering of the CV signal.
>

I quote from the Oakley 3031 documentation ..

In the TB303 the slide function is always triggered prior to any
new note. This was not really by design, more of a by-product due to 
cost saving. However, it
may be responsible for some of the grit associated with the attack 
portion of the TB sound.
Many commercial clones have been criticised for not having the bite that 
the original had. My
spike circuit may well do the trick. This, like the TB303, slews the 
pitch CV before every new
note for a small fraction of a second. In the TB303 it was tempo 
dependent, but in mine it is
fixed, since we don’t know what speed the sequence will be run.

Seb





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