Electroglottograph-driven controller for a MIDI-compatible electronic music synthesizer device

摘要

A voice-controlled musical device is driven by an electroglottograph as an input to a controller. The electroglottograph (EGG) has a transducer in the form of a band that is located about the user's neck. The EGG converts the cycle of opening and closing of the vocal folds of the user's vocal chords into a clean electrical signal that is particularly accurate with respect to pitch. An output from a microphone integral to the band picks up acoustic dilations of the throat wall concurrent with the glottal cycle and this output is also applied to the controller to indicated vocal source volume. The EGG and microphone signals are combined and converted into a MIDI digital code which can be used to drive a musical synthesizer or a computer. An external switch may be used to alter the attack of a continuous voice performance.