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Old 13th April 2009, 08:28 AM   #1
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Default Touch sensitive sound modulation

Hello. I have been searching the web for a few days and haven't found what I am looking for, but pieces of which might work together. Essentially I am looking to build something that works along the lines of a pitch bend wheel on a synth but with the following:

- touch sensitive, say a copper plate or other such device and pitch/modulation changes as you move up and down the plate

- simple as possible and small

- portable power source, preferably 9V or less

I can solder and follow a schematic, just have no understanding of circuits despite my attempts at reading books, websites, etc. If a sections function is explained, I can probably figure out how to modify to some degree if needed.

Thanks in advance
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Old 13th April 2009, 10:24 AM   #2
SY is offline SY  United States
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There was a device from Interlink Electronics called an FSR linear potentiometer, a flat panel sensitive to both the touch position and the touch force. I don't know if they still make them or not, but it's worth a search.
"You tell me whar a man gits his corn pone, en I'll tell you what his 'pinions is."
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Old 13th April 2009, 03:28 PM   #3
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Are you wanting to use this on a digital synth, as an outboard controller? In this case you'll need something that generates midi data control signals.

Or, do you want it to 'bend' an existing analogue signal?

You might try looking at circuits for Theremins, which use RF proximity detection to manipulate frequency and amplitude of their own tones. At least the circuits will give you some ideas.
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