[sdiy] audio to CV

[Theo]

Probably the most common way to do this is using a envelope follower.
Basically a fast rectifier followed by a filter.
You should be able to find plenty of examples on the web.

Personally I like to feed the output of a env.follower into a comparator
and use the comparator output as gate for a Attack-Release type
envelope generator.
This 2 stage approach works quite well with percussive sources.

My 2 cents,
Theo



From: Derek Holzer <republikasleazka at hotmail.com>

> DIYers,
>
> perhaps this is a 'newbie' question...
>
> i'm working on a project to use audio sources derived from radio signals
as
> control voltage. (i.e. patch from radio receiver audio out to synth CV in)
> i've investigated a sample-hold module (thanks, rene schmitz!), which i am
> building right now. what other devices are good for this... a comparitor?
if
> i build a simple AC/DC diode recitifier, should i follow it with a
smoothing
> cap? other suggestions?
>
> thanks, and happy new year from Holland,
> derek
>
> ps: pic and sound from my SN76477-based 'nasty noise box' are up at:
> http://www.gracies.org/derek/diy/
> ******200% atari-noise!*********
>
> pps: i would give the URL for rene's sh module again, but the page (+ the
> whole site) is down. wie gehts, rene?
>
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