rate control on MF-105

I record using Acid Pro 6.0. Say I’m playing in 4/4 timing, at 120 bpm and want to play a chord progression using the MuRF. I can’t seem to ever get the rate knob to match the my tempo on the track. I’ve tried the expression pedal (which is still awesome) to control the rate, but it still doesn’t do the job. I know there is a beat mapper and time stretch on Acid pro but that kind of messes up the effect of the MuRF. I really wish I could dial in the timing and tempo into the MuRF and get a result. Any suggestions?

Midi-Murf?

Can you send a Gate/Trigger out? Even a loud sound click output should work.

You could use it to step the pattern in real-time with your tracks. You would do that by sequencing the gate/trigger/sound, set it to output from your computer. Then run it into the “Ring” input of the Tap/Step control. If you use the “Tip” (or mono cable instead of a stereo “Y” adapter) then it will double the tempo you are sending it. The step input advances the pattern through each step as you send it a trigger signal in. This is very useful for making your own timing which helps to avoid a constant arpeggiation and provides negative space quite nicely.

Good luck getting it going! It is a wonderful pedal when you can control the timing.

either you’re talking about a different pedal than I have or I really am a completely new to the moog universe (definitely the latter), but I didn’t understand much of that haha. What’s a gate trigger output? I guess there’s no special pedal or way to just tap the tempo and have the rate copy it?

What is a loud sound click pattern?

A Gate is usually +5 Volts DC. This Voltage lasts as long as the note or as long as you hold down a key on a keyboard. When it is off, it is 0 Volts (or very close to it). This works for the MuRF Step Advance.

A Trigger is a short +2vDC to +10 Volt Pulse that is sent when you press a key. This would work for the MuRF step advance.

A loud sound could be a short kick drum, snare drum, “Click” or “Pop” sample that is the hottest/loudest signal you can output from your computers sound card. I am betting this is enough voltage to trigger the step advance on your MuRF.

You can use your sound program (Acid Pro 6) to create a sequence of Gates/Triggers/Loud Sounds to then send out of your computer. This signal can then program the timing of each step on your MuRF. If you want the normal sound this would be a regularly spaced pattern, but why do that when you can vary it and make things exciting!

You could always buy the Footswitch and tap half the tempo you are trying to achieve, but in my experience you can’t get this to be dead on in-time with the rest of a setup. I have even sent midi controlled pulses to the Tap Tempo input and it still wouldn’t match up exactly. When I switch to the method I am describing to you above, then it was always on-time and fully programmable (as far as time from step to step).

wow, I had no idea you could do all of that. Are you sure that would work with a regular analog MuRF (not a midi murf)? Sorry for the redundancy of the questions, thanks so much for the info. There’s not too much info regarding implementation of these pedals out there, and with as much potential all these pedals have I’d like to learn everything they can do. One more question, where do I go next… RingModulator or FreqBox?

Ring Mod, almost unquestionably.
Versatile, practical, unique.

I am sure you can do this on the non-midi MuRF’s. I was doing this before I bought my midi MuRF. But now I am programming the filters, envelope and timing with my Midi MuRF!

I love the Ring Mod. I don’t know what style of music you make, but that is my favorite effect. The FreqBox is fun though and I use it a lot as a sound source VCO. There are lots of tricks for either pedal.

Dear Moogerfooger forum.

I have been reading this post with great interest, but I have some problems when trying to use a sequenced rhythm to “step” through the MuRF patterns.

This is what I have been trying out:

I use a Pattern Step Adapter and a non midi MuRF.(http://www.moogmusic.com/moogerfooger/?section=product&product_id=213)

I use a sharp, short soundwave as trigger signal, and send a sequenced pattern of this soundwave at the highest possible voume out from my computer (as proposed by Bryan B above). Does it matter if the out sound is coming from a stereo or mono jack on my computer? Should it be a mono or stereo cable that goes in to the Pattern Step Adapter? I have managed to get the “rate light” to follow the sequenced rhythm, but in a short while it “loses” the tempo (and the “rate light” turn to a constant green light).

Also, should it be a problem to step through the pattern very fast? Lets say I have a song at 110 bpm which uses a 4/4 kick and I want the MuRF Pattern number 3 (which has 24 rhythm steps, I think) to play all the way through on each kick (does this make sense?). Is this possible or does the short time gap between each “step” mean a problem?

Thanks in advance.

Regards/Rocking Time[/url]

I don’t know what the maximum clock frequency the pedal is capable of, but it would be funny if it could be modulated into audio frequency… :wink:

Anyone else have any idea on how to help me (see two posts up)?

Thanks.

/rocking time

Do you still have the problem if you run the sequencer at a slower speed?

Yes, I do.

Lots of different things in this thread but I stumbled across something that I thought would help others.

Since getting my MP-201 (MultiPedal), I’ve been driving Midi MuRF using Midi from the MP while sending sync’ed CV to LFOs on my Old School. Everything was dandy except I noticed some bit of offset in the syncing. Seemed pretty much in time but not perfect.

Like many Moog products, the augmentation of an expression pedal in conjunction with tweaking a knob produces a sum / offset. (e.g. if you set the CUTOFF knob on a MF-101 to 250 hz., an expression pedal will ‘start there’).

Likewise, the ‘analog’ RATE knob on the MidiMurF does the same thing but in a way that is unique to Midi Clock.

This is documented in the manual and touched upon in the addendum but it’s still confusing.

What I’ve found is the following:

If you set your Midi clock to pulse at 120 bpm and want the MurF to step on quarter notes, you need to set the RATE knob just south of 6 on the dial. 1/2 notes seems to be slightly higher than 4; whole notes around 2.5, and so on.

Hand it to Moog to pack so much control into this pedal with the classic MuRF interface (ie no display, toggle switches, dip switches, jones plugs, etc etc). BUT, this power comes at a cost.

The manual could due with a diagram of how the # of clock messages relate to time division but it’s not there.

Note that there are other factors that relate to time and this too, can cause confusion. For instance, Midi CC#90 resets a pattern and CC#70 changes the way that the RATE knob influences the duration of the envelope (not the slope).

What would be helpful? If the MidiMuRF VST/GUI had a panel of buttons corresponding to each CC# that could let a user tweak settings.

Hope this helps some people. A guide similar to what Greg did for the Ring Mod would be of great use of somebody has that kind of spare time.