[sdiy] Micro as a Linear to Exponential converter?

[Neil Johnson]

Hi,

Colin f wrote:
>> Yes, did this way back in 1996 for my MSc project (the report with
>> full source code is still online). Since you only need one octave's
>> worth of values you can increase the resolution and still fit into a
>> reasonable space.  IIRC I chose 32 steps per semitone.
>
> And what did you do with those steps ? Interpolate for pitch-bend ?
> That might save me some soldering.

Actually, no interpolation - in this project the tables contained 24- 
bit values used to control a 24-bit frequency divider (6 of 74LS161)  
to drive a Walsh bank.  I did also drive an 8-bit DAC to give a key- 
follow CV, but this was not intended to be precision, just another  
input to the Walsh terms.

Cheers,
Neil
--
http://www.njohnson.co.uk