[sdiy] Black Magic oscillator cans

[Jay Schwichtenberg]

Tim,

Might check out some freq synthesizers or PLLs. I've used the AMI FS6131 and
FS6377 before for word clock and audio clocks before. Couple of problems
when using them though. You have to have a uC to control them and you have
to wait for them to stablize. There are also a number of other chips out
there. Start by looking in RF or radio land.

Jay

> -----Original Message-----
> From: owner-synth-diy at dropmix.xs4all.nl
> [mailto:owner-synth-diy at dropmix.xs4all.nl]On Behalf Of Tim Ressel
> Sent: Sunday, July 20, 2003 4:33 PM
> To: Glen; Ken Stone
> Cc: synth-diy at dropmix.xs4all.nl
> Subject: Re: [sdiy] Black Magic oscillator cans
>
>
> Hey all,
>
> Thanks for all the responses. What a group! Now that I
> think about it, It's kinda hard to tune a crystal so
> your gear is in tune with someone else's. Maybe its
> time for an adjustable oscillator. Someone mentioned
> an LC oscillator. I think I have an adjustable cap
> somewhere.
>
> Thanks all!
>
> --tr
>
>
> --- Glen <mclilith at charter.net> wrote:
> > At 06:25 AM 7/20/03 , Ken Stone wrote:
> >
> > >BTW, that tiny difference between 2MHz and what you
> > want is probably
> > >less than the tollerance/drift of a lot of
> > oscillators to start with, and
> > >well outside what a human ear can distinguish.
> >
> > It's not outside the what a human ear can
> > distinguish--IF were are
> > comparing two signals at the same time--one of which
> > was generated by a TOG
> > driven at 2.00000 MHz and another driven at 2.00024
> > MHz. If my calculations
> > are correct, the ubiquitous A440 would exhibit a
> > beating of once every 19
> > seconds. I know that's not objectionable for most
> > purposes, and might even
> > be desirable, but the point is that it *is* audible.
> > Depending on exactly
> > what you want to do with your TOGs, this amount of
> > error might not be
> > acceptable, but for most cases is probably
> > tolerable.
> >
> >
> > later,
> > Glen Berry
> >
>
>
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