[sdiy] noise gate?

[mikael at mikmo.dk]

Citat Colin Hinz <asfi at eol.ca>:

> On Tue, 6 Jul 2004, Roy J. Tellason wrote:
>
> > Anybody got a schematic for a simple noise gate circuit?  I'd like
> something
> > that would be adaptable to providing a logic output when a signa (say from
> a
> > mic) exceeded a certain level...
>
> EPFM.
>
> Less terseness? Oh, sorry.
>
> Craig Anderton's ELECTRONIC PROJECTS FOR MUSICIANS. The book is available
> from PAiA (and elsewhere, I'm sure, as it's published by Amsco, which
> should have good music-store distribution) and PAiA sells bare circuit
> boards as well.
>
> But be cautioned, Anderton's circuit uses the now-unobtanium RC4739
> which has the unfortunate distinction of a pinout which is as
> extinct as itself -- hassle-free substitution is not possible.
> Fortunately, it's not too difficult to handwire a "ordinary"
> op-amp IC in its place, but this does tilt the balance in favour
> of using "Vectorboard" instead of buying the PCB.
>
> The circuit also calls for a CLM-6000 opto-isolator, but if you only
> need the "gate" signal, you won't need that chunk of (near)unobtanium.
>
> Terseness? As if.
>
> - Colin Hinz
>   Toronto, Canada
>
>
>
The  Generalguitargadgets web site 
http://www.generalguitargadgets.com/v2/index.php?option=displaypage&Itemid=109&op=page&SubMenu=

Has updated PCB layouts for Andertons prijects, using available opamps

Mikael