MOTM

LFO1 (320)	26.8 Hz
LFO2 (320)	27.8 Hz
VCO1 (300)	96.8 kHz
S&H1 (100)	13.2 Hz
S&H2 (101)	12.3 Hz
VCF4 (410)	not measured

Didn't want to take the time to find a way to measure '410 LFO frequency.

I didn't have the patience to find minimum frequencies. Slow!  Slow!  Slow!
Yeah!

These are all unmodulated.

These are all actually reading from my setup.

All measurements performed with Fluke 87-III.

Easy to do bit-descimation (simulated sampling effects) with VCO into S&H
since you can trigger it at sampler rates (i.e. 44.1 and 48 kHz).

Not possible to use un-modulated LFO to generate modulation source for
"growl" in brass patches (usually around 80 Hz) required.  Hate to waste a
VCO on this.

--Shemp

Hey, it's nice to see someone else's measurements.  I'll put mine up on my
web site, once it's up.  (Oh well, another project.)

BTW, you don't need to use up a VCO; just plug an 800 into the FM jack on
the 320 and use the sustain knob as a control voltage aka. freq control
(attack, decay and release all set to 0).  I think you can get up to around
2khz or so.

If you don't want to use up an 800, plug the 320 pulse-out back into its
FM-in and set shape to 10.  (Playing with shape knob may add addl. effects.)
Of course this removes the use of the shape function and pulse-out jack.
Eh... such is life.

Cheers,
George Kisslak

----- Original Message -----
From: Tentochi <tentochi@...>
To: MOTM List <motm@yahoogroups.com>
Sent: Wednesday, May 16, 2001 7:35 PM
Subject: [motm] Max. Frequencies


LFO1 (320) 26.8 Hz
LFO2 (320) 27.8 Hz
VCO1 (300) 96.8 kHz
S&H1 (100) 13.2 Hz
S&H2 (101) 12.3 Hz
VCF4 (410) not measured

Didn't want to take the time to find a way to measure '410 LFO frequency.

I didn't have the patience to find minimum frequencies. Slow!  Slow!  Slow!
Yeah!

These are all unmodulated.

These are all actually reading from my setup.

All measurements performed with Fluke 87-III.

Easy to do bit-descimation (simulated sampling effects) with VCO into S&H
since you can trigger it at sampler rates (i.e. 44.1 and 48 kHz).

Not possible to use un-modulated LFO to generate modulation source for
"growl" in brass patches (usually around 80 Hz) required.  Hate to waste a
VCO on this.

--Shemp




Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/

At 7:35 PM -0400 05/16/01, Tentochi wrote:
>
>LFO1 (320)	26.8 Hz
>LFO2 (320)	27.8 Hz

>Not possible to use un-modulated LFO to generate modulation source for
>"growl" in brass patches (usually around 80 Hz) required.  Hate to waste a
>VCO on this.

Huh??  You changed the caps in yours or something, right??

I didn't do anything special when I built them.  And I didn't do any
research before I took the readings.

The only thing that is plugged in is a cable into the pulse out.  Speed =
max. Shape = 50%.  And the alligator clips where attached to the other end
of the cable.

I have never done any calibration, and I can't remember if there was any to
do.

I probably screwed something up.

What readings does everyone else get?

Cheers!
Shemp

> At 7:35 PM -0400 05/16/01, Tentochi wrote:
> >
> >LFO1 (320)	26.8 Hz
> >LFO2 (320)	27.8 Hz
>
> >Not possible to use un-modulated LFO to generate modulation source for
> >"growl" in brass patches (usually around 80 Hz) required.  Hate
> to waste a
> >VCO on this.

On Thu, 17 May 2001, Tentochi wrote:

> > >Not possible to use un-modulated LFO to generate modulation source for
> > >"growl" in brass patches (usually around 80 Hz) required.  Hate
> > to waste a
> > >VCO on this.

i didn't see this part of the original post... anyway, you don't need to
waste a vco; just patch in an extra EG (untriggered) into fm1. this acts
as a bias voltage. 80 hz is real easy to get using this method.

set all times (a, d, r) on the eg to zero, then adjust the fm1 amt on the
320 and the sustain on the 800 to get the proper frequency. of course, you
could trigger the 800 and put a short attack and release on it so the
growl fades in on note (or accent) on and out on note (or accent) off...
but i don't know if that's appropriate.

bleep.
out.

At 4:53 PM -0400 05/17/01, Tentochi wrote:
>
>I didn't do anything special when I built them.  And I didn't do any
>research before I took the readings.
>
>The only thing that is plugged in is a cable into the pulse out.  Speed =
>max. Shape = 50%.  And the alligator clips where attached to the other end
>of the cable.
>
>I have never done any calibration, and I can't remember if there
>was any to do.

Afaik, there isn't.

>I probably screwed something up.

It's much more likely that you misread the frequency counter than made the
same mistake building two 320's.  What do your ears tell you??  Does it
sound that low??

>What readings does everyone else get?
>
>> >LFO1 (320)	26.8 Hz
>> >LFO2 (320)	27.8 Hz

I just got done measuring my 320 with both a frequency counter and a tuning
meter.  I prefer the tuning meter.

With no other inputs, with the speed knob at maximum, and the shape in the
middle, I get approximately 220Hz or an A -1.  All four waveforms measure
exactly the same.

With a 1V/oct input of 5V the output is 6.29KHz, with a 1V/Oct input of 5V
and an FM input of 5V (with the FM knob fully CW) the output is 8.45KHz.
With no FM input and a 1V/Oct input of 4.27V I get a C +4 (the highest note
on my tuning meter) or about 4.23KHz.

> >Not possible to use un-modulated LFO to generate modulation source for
> >"growl" in brass patches (usually around 80 Hz) required.  Hate
> >to waste a VCO on this.

While I wouldn't recommend the 320 as a stable VCO (the pitch tends to
waver a bit, especially after changing the input voltage -- it takes a
while for the frequency to settle), mine can easily do 80Hz.  The manual
mentions changing capacitor values in order to change its frequency range.
I would guess that the cap in yours is at the far end of its tolerance,
except that you have two 320's with almost the same the maximum frequency.
Perhaps, newer 320's come with smaller caps.  I don't know.