Archive of the former Yahoo!Groups mailing list: MOTM

previous by date index next by date
  topic list next in topic

Subject: Re: Clock Divider ideas

From: "Dave Bradley" <daveb@...
Date: 1999-05-26

As usual, I have to chime in and ask for weird stuff...

How about the ability to divide by non binary values - divide by 3, 5, 7
etc. gives you the ability to set up and/or sequence poly rhythms easily.

(Ducking)

Dave Bradley
Principal Software Engineer
Engineering Animation, Inc.
daveb@...

> -----Original Message-----
> From: Paul Schreiber [mailto:synth1@...]
> Sent: Tuesday, May 25, 1999 10:09 PM
> To: motm@onelist.com
> Subject: Re: [motm] New modules Status
>
>
> From: "Paul Schreiber" <synth1@...>
>
>
> >These all sound great! I'm interested in what your thinking of
> for both the
> >Lag and Divider modules.
> >
>
>
>
> The clock divider is "funny-looking" as in the simple form, has no pots
> (only jacks) and switches.
>
> You have an INput, that is set with a LM311 for 2.4V switchpoint (TTL
> compatible). Then, probably
> a little Xilinx pre-programmed 44 pin FPGA with symmetrical
> dividers from 2
> to 10. A switch
> to set outputs from 0-5V or +-5V (TTL mode or waveform mode). Or I could
> get fancy and have
> a symm/non-symm function. In non-symm, you get 1 pulse out only at the
> divide rate. In symm, you get a 50%
> duty cycle square wave at the divide rate.
>
> So, it's like half of a '120 with individual outs.
>
> The circuit is simple: a LM311, the Xilinx part (PLCC in a socket) and 2
> quad op amps, 9 jacks, 1 switch. 1U wide.
>
> The lag can be simple or complex, depending on price and the skill of the
> designer.
>
> >>Then 2 more filters (Moog and SEM) and THEN work on Baby MOAS Sequencer.
> >
> >>I am against VC-Q in general because it severly degrades CV feedthrough.
> >>I
> >>may do
> >>Thomas Henry's 3320-based LP/All-pass filter with VC-Q. The CEM
> chips are
> >>trimmed
> >>by zener-zap to minimize CV feedthrough, and I have access to 12,000 of
> >>them!
> >
> >
> >Bummer! I figgered there was a reason you'd not mentioned VCQ in
> the past.
> >VCQ is really powerful though so I'd like to see you look into the 3320
> idea
> >-- I've been using some 3320s with their VCQ to great success.
>
>
>
> I may have VC-Q on the Moog filter if it doesn't muddy up the sound too
> much.
>
> >
> >And after all those modules....maybe... the fabulous MOTM Ribbon
> >controller????
>
>
>
> Errr......don't hold your breath.
>
> Paul S.
>
>
>
> ------------------------------------------------------------------------
> With more than 17 million e-mails exchanged daily...
> http://www.onelist.com
> ...ONElist is THE place where the world talks!
>