[sdiy] MXR Pitch Transposer Schem/Circuit

Martin Fay martin at martinfay.com
Sun Mar 10 11:45:23 CET 2013

Hi Gordon,

I believe the trick is to have 2 read pointers into the delay buffer  
and crossfade between those outputs to avoid reading close to the saw  


Sent from my iPhone

On 10 Mar 2013, at 10:00, Gordon JC Pearce <gordonjcp at gjcp.net> wrote:

> On 08/03/13 16:13, Tom Wiltshire wrote:
>> That's a damn interesting gizmo. Does anyone have any idea how it  
>> works?
> Someone on the SQ80 mailing list - where we were discussing time- 
> based effects the other day, as it happens - mentioned a pitch  
> shifter that modulated the delay clock with a sawtooth.  I can see  
> how that would give a steady-ish pitch shift but surely it would  
> "hiccup" as the saw reset?
> -- 
> Gordonjcp MM0YEQ
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