freq. mult.

[Jon Darby]

Are the 566s that Radio Shack sells something to avoid? After the big 566
VCO discussion a few weeks I went and ordered a few for later. I was
expecting a $4.50 chip by the way everyone was talking but I believe it was
only $1.50 or so. Why would I question such a deal, you tell me!

Thanks a pantload,
Jon Darby

-----Original Message-----
From: Scott Gravenhorst <music.maker at gte.net>
To: synth-diy at node12b53.a2000.nl <synth-diy at node12b53.a2000.nl>
Date: Tuesday, November 28, 2000 6:40 PM
Subject: Re: freq. mult.


>Ok, that was _possibly_ silly mode...  And I haven't had
>any beer yet!  The more I think about this, the more I
>see a use for a pile of small microswitches that I
>picked up at All Electronics.
>
>Speaking of purchases, I finally scored a few LM566 chips
>at Electronix Express.
>
>"Jon Darby" <jdarby at lplizard.com> wrote:
>>That is seriously not a bad idea. You could synthesize even the function
of
>>the bellows with a small air-driven generator giving you the control
voltage
>>of the volume, and a keyboard juked from a Moog Rogue, if only Kraftwerk
>>were more influenced by polka early on! :)
>>
>>
>>-----Original Message-----
>>From: Scott Gravenhorst <music.maker at gte.net>
>>To: synth-diy at node12b53.a2000.nl <synth-diy at node12b53.a2000.nl>
>>Date: Tuesday, November 28, 2000 4:59 PM
>>Subject: Re: freq. mult.
>>
>>
>>><possibly silly mode>
>>>Hmm.  I'm conguring up an image of a 'synth-cordian', a
>>>device that uses a PLL to track a mono VCO and pop it's
>>>output up around 1 megahertz, this driving a TOG which
>>>is connected to a zillion buttons that select notes
>>>to mix into chords...  You play the VCO with one hand
>>>and the chord buttons with the other.  Heh, well at
>>>least you wouldn't have to pump it; or use the pumping
>>>action as a controller for portamento/VCF.  Polka?
>>></possibly silly mode>
>>>
>>>WeAreAs1 at aol.com wrote:
>>>>
>>>>In a message dated 11/28/00 7:25:27 AM, blacet at monitor.net writes:
>>>>
>>>><< The standard method of using a PLL such as a 4046 and a binary
counter
>>>>works well if you get the filter right. See "The CMOS Cookbook" by Don
>>>>Lancaster. >>
>>>>
>>>>This has got me thinking...  Do you guys remember the old EML "Poly
Box"?
>>It
>>>>had a little one-octave keyboard and an input for a monophonic VCO, and
it
>>>>would allow you to play polyphonic chords that you could then send to
your
>>>>monophonic synth's VCF and VCA.  Obviously, it had some kind of
top-octave
>>>>divider in it.  But what I would like to know is:  Did it require the
>>input
>>>>of a very high frequency VCO (in order to put the top-octave divider's
>>output
>>>>in a useful octave range), or did it have some kind of frequency
>>multiplier
>>>>(PLL?) inside that allowed you to keep your monosynth VCO in a more
>>"normal"
>>>>octave range?  Have any of you guys ever owned or looked inside one of
>>those
>>>>Poly Boxes?
>>>>
>>>>Michael Bacich
>>>
>>>-- Scott Gravenhorst : On The Edge, but the Edge of What?
>>>-- Linux Rex, Linux Vobiscum  |  RedWebMail by RedStarWare
>>>-- FatMan: www.teklab.com/~chordman
>>>-- NonFatMan: members.xoom.com/_XMCM/chordman/index.html
>>>-- The 21st century does NOT start in the year 2000!!!
>>>
>>
>
>-- Scott Gravenhorst : On The Edge, but the Edge of What?
>-- Linux Rex, Linux Vobiscum  |  RedWebMail by RedStarWare
>-- FatMan: www.teklab.com/~chordman
>-- NonFatMan: members.xoom.com/_XMCM/chordman/index.html
>-- The 21st century does NOT start in the year 2000!!!
>