[sdiy] Ewi-CV converter

[Richard Arntzen]

Yes, it was very simple (a good thing, or else I would probably have been in
serious trouble). The 1V/oct tracks +/- 10 cent over the whole range with
MOTM-oscillators, there is one octave roller that gives a sharper pitch than
the others. Still better than what I am able to produce with my saxes
(across only 2.5 octaves).

Portamento controls would have been nice for both the pitch and the glide
controller. My two reasons for not including it are:
1) what should I then do with my MOTM820..?
2) You might want to control something else than the outputs are
"designated" to - then again, the portamento could be turned off...not a
good argument.

Anyway what I am currently missing most is a trigger output for the breath
in order to fire an AR-generator and produce accentuation on the start of a
tone - have to play very hard in order to get punchy accents.

Regards

Richard

> -----Original Message-----
> From: owner-synth-diy at dropmix.xs4all.nl 
> [mailto:owner-synth-diy at dropmix.xs4all.nl] On Behalf Of 
> WeAreAs1 at aol.com
> Sent: Saturday, July 09, 2005 08:45
> To: richarnt at frisurf.no; synth-diy at dropmix.xs4all.nl
> Subject: Re: [sdiy] Ewi-CV converter
> 
> 
> 
> In a message dated 7/8/05 5:28:05 PM, richarnt at frisurf.no writes:
> 
> << So I proudly presents my first DIY project; an interface 
> for my Akai EWI-3020 to get out CV signals.
> 
> Only lowly Op-amp circuits, but it works ... I have even made 
> my first homepage to show it on:
> 
> http://home.chello.no/~richarnt/ewi-cv.html >>
> 
> Hello Richard,
> 
> That looks great!  Thanks for sharing it with us.  I can't 
> wait to try this 
> with my own EWI controller, although I don't really have time 
> for it.  Are you 
> really able to get an accurate 1v/octave output with just 
> those two simple 
> trimmers and a summing amp?  I thought it would be more 
> complicated than that.  I 
> think you should add a portamento circuit, though.
> 
> Best regards,
> Michael Bacich
> 
>