Electrotactile vocoder

Details Electrotactile vocoder Electrotactile vocoder

A - Human Necessities

61

F

326/1, 354/47

A61F 11/04 (2006.01) G09B 21/00 (2006.01)

Patent

CA 1222825

ABSTRACT OF DISCLOSURE An electrotactile vocoder for persons having impaired hearing in which electrical stimulation is applied to a multiplicity of electrodes in contact with either side of each finger so as to electrically stimulate the digital nerves of the user under the control of stimulator circuitry which is in turn controlled by processing circuitry for a speech signal received by a directional microphone worn on the ear of the user. The speech processor is suitably of the type described in United States Patent 4,441,202 Tong et. al. modified to cause stimulation of the digital nerves via the eight finger electrodes and a common electrode held in contact with the wrist of the user.

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