Host controller for programmable digital hearing aid system

Details Host controller for programmable digital hearing aid system Host controller for programmable digital hearing aid system

1988-02-12

1989-11-07

Ng, Jin F.

Electrical audio signal processing systems and devices

Sound effects

Reverberators

73585, 381 60, 381 68, 381 93, H04R 2900, H04R 2500

Patent

active

048797499

ABSTRACT:
A host controller for producing data from a computer for a programmable filter of a hearing aid to cancel feedback in which phase shift and gain control means as adjusted by the computer to generate a feedback cancellation voltage which is supplied to the hearing aid for summation of the feedback and feedback cancellation voltages by the hearing aid and in which the summed feedback and feedback cancellation voltages are returned to the host controller for further adjustment of said phase shift and gain control means until feedback has been cancelled. The host controller then transmits to the programmable filter the phase shift and gain control data necessary to cancel feedback.

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Hearing Instruments, Feb. 1977, Frye, George, J., "Computerized Hearing Aid Testing", pp. 14 and 29.

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