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Looper's Delight
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I am no expert, but Jeff Kaiser, who has done some research on this with max/msp, says that any volume pedal will work, because it is just inducing an amplitude change. Any devise that introduces an amplitude change can be used with max/msp. You have to add a cycle object in the pedal loop, which generates a sine wave...the pedal then decreases or increases the gain of that sine wave, because it is inserted in the loop of the sine wave. The output of that is then converted to gain values, like -9.0db to -.5db, and then I add a conversation object in max that converts the -9.0 to -.5db range to 0 to 127. I'm set, and I can do anything with that. I pull the EV-5 back, and the values in max go to 0. Push it all the way down it goes to 127. Then I map that 0-127 to any parameter in max. If I have a pitch shifter, and I want to go from -24 to +24 pitch, I simply tell max (with another small object) to convert that 0-127 range to -24 to +24. It's all just number manipulation and conversation once you get in max. It's cool, but I can do all this with no MIDI. I could even use an expression pedal to turn programs on and off...no MIDI. I can do it all with amplitude changes. Jeff Kaiser uses no MIDI. He uses EV-5s for expression changes, plugging them directly into his audio interface, and he uses footswitches to turn programs on and off, also plugged into the audio interface...all with amplitude changes. With the switch, you just tell max that if the amplitude is under a certain value, to turn it off, if it is over, turn it on. Simple. No MIDI. Cripes, I could plug my guitar into the FW400 and control parameters, turn things on and off, etc. I could program max to turn effects on and off, only when I play certain frequencies on the guitar. However, most of these devices (as you pointed out earlier) won't map the voltage on a linear scale. But if you find a volume pedal that can switch from linear to log, then it would work out of the box. I could still use a normal volume pedal for my system, connecting the output of the volume pedal to a FW400 input, and the FW400 output to the input of the volume pedal (no TSR required)....BUT I would have to add some extra code in my max patches to convert the log scale to linear...extra work, but doable. Kris Hi Kris, Can you please clarify for me... The EV-5 is generally considered to be an "expression pedal" and will work in an exp.pedal input on hardware processors, or exp.pedal input on a midi controller - correct? Pedals like the Ernie Ball have inputs/outputs and are considered "volume pedals". However, they will work as expression pedals when plugged into the exp.pedal input of a hardware processor or midi controller when used with a TRS-TSx2 Y cable. ie. they will send CC 0-127 and can be calibrated like an EV-5 - Correct? In any case, I don't understand how an EV-5 (not a volume pedal) can be used with the audio in/outs on a Fireface 400. -Qua Original Message: ----------------- From: Krispen Hartung khartung@cableone.net Date: Wed, 7 Nov 2007 13:23:09 -0700 To: Loopers-Delight@loopers-delight.com Subject: Re: Expression Pedal - Alesis F2 Review Thanks for all the othe pedal options. I am using the EV-5s and I just ran into a problem. Since the EV-5s already have a cord attached to them with a stereo male end, I had to buy a few Hosa TSR adaptors. The problem is that the adaptor wires are barely long enough to reach from the input and ouput plugins of my Fireface 400 (yes, I am using them to control parameters in max, rather than MIDI, which requires splitting the expression pedal inputs and creating a loop between input/output of the audio interface. They do connect, but I'm worried about the tension. Hence, I am thinking of getting two other pedals that don't have the cables already on them, but just the jacks. Then I can just buy a TSR male to two mono quarter inch male patch cord and not need any TSR Y-cables. ....,<snip> -------------------------------------------------------------------- mail2web LIVE - Free email based on Microsoft® Exchange technology - http://link.mail2web.com/LIVE