EMS Pitch to Voltage Converter Module

images via this auction

"The primary function of this device is to convert an audio input into a DC voltage whose value is proportional to the pitch of that input signal. If this voltage is then applied to the control input of an oscillator, the oscillator can be tuned to follow the input in unison or at any other interval desired. In situations where musicians are already using synthesisers to treat the sound of instruments, voice or tape, the addition of the Pitch-to-Voltage Converter introduces a range of possibilities hitherto unexplored, since it enables direct control of the synthesiser's parameters from a live musical input. Others ALL IMPORTANT details on this website"be sure to see the sellers other items.