[sdiy] A different kind of polyphonic aftertouch

MTG grant at musictechnologiesgroup.com
Thu Dec 14 17:09:40 CET 2017


"There are no electronics in the switch modules themselves. Instead, 
surface-mounted infra-red optoelectronic components on the circuit board 
provide the sensing in conjunction with a prism in the module's 
transparent slider."

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