MOTM

Or have the three outputs as part of an LFO array, a set phase apart. You
know, 120-degrees apart... poor man's quadrature LFO. I've seen EXTREMELY
simple circuits to do this with trapezoidal waves, usually as modulation
sources (they were big in the bucket-brigade delay days). You could call it
an "Ensemble LFO" or something like that.

So you could have:

	O Rate (initial frequency)
	O Mod (CV attenuator)
	@ LED(s)

* CV IN	* 0-degrees Out
* 120 Out	* 240 Out

That still leaves room for two more jacks, another knob, whatever.

Or are we assuming no voltage control on this uLFO?

It was mentioned that sine shaping adds circuitry [cost, & complexity], but
for my thinking, if there's one waveform that you want in an LFO, it is a
sine wave. Triangles are much easier to implement (integrate a pulse) but
they are not the same. You can really tell the difference between vibrato
with a triangle and with a sine, and the sine sounds much more natural, to
my ears anyway.



-----Original Message-----
From: mmarsh100 [mailto:mmarsh@...] 
Sent: Wednesday, 05 December, 2001 11:00 AM
To: motm@yahoogroups.com
Subject: [motm] Re: Mock up the MOTM-390 uLFO

OK, so I like the idea of many LFOs.  My idea uses a) 3 pots, 6 
jacks.  Each pot controls the RATE of one of three LFOs, each jack 
PAIR is the output, one is inverted.  The waveform is fixed (SINE or 
TRIANGLE).  Alternatively, each LFO is a different waveform (TRI, 
SAW, and SQUARE?).

Mike

--- In motm@y..., "Paul Schreiber" <synth1@a...> wrote:
> OK, it's contest time. Winner gets something, I'll dig up a goodie.
> 
> Mockup (text or graphics) a proposed uLFO. You have 3 basic configs 
to choose from
> 
> a) 3 pots, 6 jacks
> 
> b) 4 pots, 4 jacks
> 
> c) 3 pots, 1 switch &1  LED, 4 jacks
> 
> Features, waveshapes, functions, etc are up for grabs! Deadline is 
Friday at noon. You can send
> them in to the list, which then 'locks' that exact design BUT gives 
others ideas. Or wait until
> 11:59AM (like eBay!) to post. it.
> 
> Get going!!!! You don't have to *electrically* design it, just 
the 'UI' as the SW geeks speak.
> Think "Micro"!!!
> 
> Paul S.