Tempo sync LFO & S+H

Tips and techniques for Minimoog Analog Synthesizers
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tHEbUZZ
Posts: 85
Joined: Sun Oct 12, 2008 8:16 am
Location: Venice of the North - Belgium

Tempo sync LFO & S+H

Post by tHEbUZZ » Fri Jul 16, 2010 6:50 am

Hi there,

I was wondering if there's a way to tempo sync the S+H and LFO section to make a sound motion fit in to the tempo of a track?
Or is it a DIY by ear thing? I got so many cool sounds that would do great in the tracks I'm working on but never seem to capture the perfect take or get it to match the tempo of the track.

Any advice?

Thanks
Everybody knows that's what aliens sound like - Dr. Bob Moog

EMwhite
Posts: 1649
Joined: Sun Jun 21, 2009 12:22 pm
Location: Middlesex

Re: Tempo sync LFO & S+H

Post by EMwhite » Fri Jul 16, 2010 10:29 am

You can drive a CV Pulse into the LFO via your MOD2 connection on the back of the Voyager (I have an Old School but think it's identical?).

Then on the Mod2 bus simply select ON/MOD2, but that's just part of it.

If you are Syncing to Midi, you'll need an external source to drive the CV. The MP-201 works rather well in this regard.

On the Voyager (New School), there must be menu settings to accomplish this without CV. I have a Little Phatty and there is a setting to simply Sync LFO to Midi clock. You'll likely get an answer shortly or just check out the manual which is online here if you don't have it.
.
'76 Minimoog, Taurus 3, Oberheim FVS + Son of 2-voice; Sequential ProOne; Juno 106; Moog Model 15; Kurzweil 250; Hammond M3; and a handful of Fender Basses Flickr!

EMwhite
Posts: 1649
Joined: Sun Jun 21, 2009 12:22 pm
Location: Middlesex

Re: Tempo sync LFO & S+H

Post by EMwhite » Fri Jul 16, 2010 10:34 am

I just checked and pg. 35/36 of the original Voyager manual shows me that there is a MIDI option on the Voyager LFO section itself (who knew?).

If you are not using Midi, you can also massage a Kick drum sound and feed the audio (if properly attenuated) into the MOD2 as I mentioned above. Obviously this will only be tempo musical if kicking on 1/4 notes 1/8 notes, etc. (else the LFO stepping will be erratic which might be desirable for some music). Also worth mentioning that you should have the kick drum or a snare on it's own channel and the closer you can get to a square wave or trigger, the more precise it will be.
.
'76 Minimoog, Taurus 3, Oberheim FVS + Son of 2-voice; Sequential ProOne; Juno 106; Moog Model 15; Kurzweil 250; Hammond M3; and a handful of Fender Basses Flickr!

tHEbUZZ
Posts: 85
Joined: Sun Oct 12, 2008 8:16 am
Location: Venice of the North - Belgium

Re: Tempo sync LFO & S+H

Post by tHEbUZZ » Mon Jul 19, 2010 9:03 am

Thanks for the reply's EMwhite

I think i found someting:

6.1 LFO MIDI CLOCK DIVIDER
When the LFO sync switch is set to MIDI, a MIDI Clock signal retriggers the start of the
LFO cycle. The clock divider calculates a new retrigger signal based on the MIDI Clock
signal. The divider has 96 values, with 48 divisions per beat. The values create the
following rhythms:
− 96 = Half note = 2 beats of the MIDI Clock signal
− 72 = dotted quarter note = 1 ½ beats of the MIDI Clock signal
− 48 = quarter note = 1 beat of the MIDI Clock signal
− 36 = dotted eighth note = ¾ of a beat of the MIDI Clock signal
− 24 = eighth note = ½ of a beat of the MIDI Clock signal
− 16 = triplet eighth note = 1/3 of a beat of the MIDI Clock signal
− 12 = sixteenth note = ¼ of a beat of the MIDI Clock signal

And:

MIDI CLOCK
When the LFO SYNC switch is set to “MIDI”, a MIDI clock signal retriggers the
start of the LFO cycle, similar to the way Oscillator Sync works. Because the
Voyager has an analog LFO – the LFO Rate itself is not automatically set to the
clock frequency – just the start of the LFO cycle. Adjusting the LFO Rate to a
different rate relative to the MIDI clock signal can yield some interesting LFO
patterns. To learn how to use this:
- Call up a preset that has audible LFO modulation and a
sustaining tone.
- Switch the LFO sync switch to MIDI. Make sure the Clock divider
value is maximum.
- Send a MIDI clock signal to the Voyager.
- Now, slow the LFO rate down all the way, and play a note and hold it. You
should here the LFO triggered at every second MIDI tick. Now increase the LFO
rate until it closely matches the half note tempo of the song. You have now
synced the LFO to the tempo of the music. Because the LFO is triggered by the
MIDI clock, it can't drift off tempo.

Cheers
Everybody knows that's what aliens sound like - Dr. Bob Moog

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