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Looper's Delight
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> Hi Per, > > Could you explain the following a bit more...? (it was from your > post on 5/11/06 at 6:49 PM) > >> This does not mean that "effect's is stuttering in a static way", >> since I have taken care to program expression pedals to "sweep" >> the tempo relation (effect vs main tempo, manipulating the tempo >> relation coefficient while busy playing). > On 14 maj 2006, at 18.30, Ken.H wrote: >> > I'm really curious about the "pedals to sweep the tempo relation" > part of this. > > Thanks! > > Ken H. Imagine I'm playing through an FX patch that chains a lot of effects on a row. Now, one of those effects is a filter. The filters cut-off parameter is being manipulated by a LFO, oscillating by a wave shaped curve. If the LFO speed is set to 8th notes it will "stutter in a static way". To be able to "sweep the tempo relation" I can set up a binding to the LFO Speed from my MIDI cc expression pedal. The more I press it at one direction, the faster the filter will go and the more I move my foot at the other direction the slower the filter will oscillate. I especially like to use musical values to "quantize" the relation between tempo and the LFO speed (filter speed change) so you can easily use the pedal to find an interesting counter rhythm. Typically the filter bubbling of this example will sweep from 1/32T down through 1/32-1/32.-1/16T-1/16-1/16.-1/8T-1/8-1/8.-1/4T-1/4-1/4.- etc etc until it may land at a 2 whole notes frequency. In Mobius you can not do this (above) by scripting, but I'm doing it with the FireworX (and other devices). A music sequencer application that sort of specializes on this type of musical real-time tempo based tweaks is the modular MIDI step sequencer system Numerology. Any MIDI fader can be set to work the relation between any two (or more) parameters (Max is also good at that, eventually resulting in note sequences typically heard in music by Autechre etc). The FireworX has a very well designed system for binding controllers to manipulate parameters, in this regard. I use to think about the FireworX as a kind of "hardware effect Numerology" ;-) > Also, it seems like different effects units respond to changing > external MIDI clock rates in different ways (and sometimes not too > gracefully). Any thoughts on that, especially with the FireworX? It depends on which fx patch you are running. I there is reverb or delay in the patch a change of tempo may result in crackling noise from the FireworX. One patch I set up was particularly vulnerable. I had created a send line going back and returning into the effect chain at an earlier point - before a harmonizer and a delay - so the sound was looping and returning at a different pitch for each turn. I could not use this patch with the MIDI clock signal sent out by Ableton Live, when Live itself was following the MIDI Clock signal sent out by Mobius. So Jeff was kind to put a second virtual MIDI output into Mobius and then I could use this FireworX patch - syncing to the same MIDI clock that Live as well was syncing to (Mobius sending out two identical "clone" streams of the same MIDI Clock frequency one into Live and one into the FireworX. Another practical example of what MIDI Clock may be good for). But to round it off, most synced FireworX effect patches don't sound bad when the tempo changes. Greetings from Sweden Per Boysen www.boysen.se (Swedish) www.looproom.com (international) http://tinyurl.com/fauvm (podcast)