Hearing aid with a self-test capability

Details Hearing aid with a self-test capability Hearing aid with a self-test capability

2005-04-12

2005-04-12

Mei, Xu (Department: 2644)

Electrical audio signal processing systems and devices

Monitoring/measuring of audio devices

Testing of hearing aids

C381S058000, C381S023100

Reexamination Certificate

active

06879692

ABSTRACT:
A hearing aid with a test controller for detection of a defect in the signal path of the hearing aid is provided. The test controller controls a test signal generator and a probe means for determination of a signal parameter, such as signal level, frequency spectrum, phase characteristic, auto-correlation, cross-correlation, etc. A set of signal switches controlled by the test controller is provided for connecting a desired test signal generator or a desired probe means to a desired point in the signal path for testing of a desired part of the hearing aid. Further signal switches are provided for coupling hearing aid components into and out of the signal path of the hearing aid.

REFERENCES:
patent: 4049930 (1977-09-01), Fletcher et al.
patent: 5999856 (1999-12-01), Kennedy
patent: 6118877 (2000-09-01), Lindemann et al.
patent: 20020039428 (2002-04-01), Svajda et al.
patent: 20020057814 (2002-05-01), Kaulberg
patent: 41 28 172 (1993-03-01), None

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