MOTM

Since this has come up twice today, I thought I'd mention it.

Without a CV inserted, the panel RATE control maxes out around 40 Hz.
However,
with RATE at 10, you can drive *both* 1V/Oct and FM with +5V each and then
the '320
happily is at about 5Khz.

No promises on the *accuracy* of 1V/Oct. Let's just say its *pretty close*.

Paul S.

>
> If you want to get your 320 to track accurately at 1/oct per volt, I have
> discovered how to make that work perfectly.  I will call this "sub
> oscillator, with shape."

Kudos to Larry for thinking this through. This shows how a basic
understanding
of each module (the ins and outs) spawns "new" directions in a modular
system.

He is correct: hard sync "drags" the sloppy LFO into phase lock with the
'300.

>I have
> an AWESOME patch set up right now doing this with the 120 sub 3 and 4
> turned up and LFO rate set at about 7.

Care to share this in an audio file??

Paul S.

If you want to get your 320 to track accurately at 1/oct per volt, I have
discovered how to make that work perfectly.  I will call this "sub
oscillator, with shape."

As Paul pointed out, the 320 is "pretty close" to tracking 1 v/oct.  To get
it in sync as a sub osc, it is simple.  Go ahead and hook your keyboard CV
into the 1/v oct of the 320.  Take your 300 (one of the unused outputs)
over to your 120 sub osc.  Take the sub osc output (original signal turned
down) over to the sync input of the 320.  Set the 320 oscillator to track
just a little low on the frequency (before inserting the sync).

The 320 will track perfectly with your 300 in sub osc mode.  The rate knobs
and shape knobs will allow your 320 to make even more different shapes due
to the 120 sub oscillator forcing the 320 to reset at each cycle.  I have
an AWESOME patch set up right now doing this with the 120 sub 3 and 4
turned up and LFO rate set at about 7.  If you want the shape of the LFO
wave to vary with keyboard tracking, omit the 1 v/oct connection to the
320.  With just a little practice, you can set the 320 rate so it will
track the 300 / 120 combo even without 1 v/oct connection.  Of course, the
higher the frequency, the less of the whole cycle you get from the 320,
which is an interesting effect.

Hell, even a stooge like me figured that one out.
Larry Hendry


> From: "Paul Schreiber" <synth1@...>
> 
> Since this has come up twice today, I thought
> I'd mention it.
> 
> Without a CV inserted, the panel RATE control
> maxes out around 40 Hz.
> However, with RATE at 10, you can drive *both*
> 1V/Oct and FM with +5V each and then
> the '320 happily is at about 5Khz.
> 
> No promises on the *accuracy* of 1V/Oct. Let's just say its *pretty
close*.

When I wrote Larry to tell him how great his 320-tracking tip was, in
proper Stooge form :^) he didn't notice that I had sent him an off-list
Email (understandable, given all the private Emails that were flooding the
list this morning :^) ), thus depriving the list of yet another great idea
further on down ...

>From: "J. Larry Hendry" <jlarryh@...>
>
>Well, even if the new micro-VCO is stripped as has no sync input, it could
>be the master with other 300s or 320s sync'ed from it.  For certain, the
>320 is a very nice LFO.  But, I can see that I will use mine in the audio
>range as a bass enhancer on a regular basis.  As much as I like the 120, a
>square wave gets a bit tiresome.  So, sometimes I know I will appreciate
>the 320 as my sub osc.  As an LFO, this shape knob has got me smiling REAL
>big.  I never dreamed it would offer such flexibility and audible
>difference in LFO modulations.
>
>Speaking of square waves.  What about a separate MOTM modules that would
>just be a WAVE shaper?  -- Square wave input, the "big 4" outputs.  I would
>buy one.

Is this possible/practical?  The waveshaper inherent in the -300 uses a
sawtooth wave as input in order to output a square (pulse) wave, and I'm
not quite sure how it would work the other way around.  The -800 EG can be
used as sort of a wave shaper, but that's not really practical AFAIK unless
your range of pitches is pretty severly restricted.  Would a true
square-input waveshaper require some sort of phase-locked loop to keep
amplitudes consistent?

But if it can be done, I'll buy one!

	-Doug
	 ceres@...

Hi All !

If the pitch is derived from an available voltage, it should be 
possible to rig a VCamplifier to compensate for the vary\ufffdng amplitude 
of the waveshaper .  Read somewhere Roland did this in a(more ?) dco 
synth .

Bye for now .


Keep 'em oscillating :)


Hugo
=