Air leak self-diagnosis for a communication device

Electrical audio signal processing systems and devices – Monitoring/measuring of audio devices

Reexamination Certificate

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Details

C073S049300

Reexamination Certificate

active

07570769

ABSTRACT:
A communication device (100) is provided with a technique (400) for self-diagnosing an air leak. The leak is determined without having to open the communication device by applying a temporary excitation signal to the speaker terminals (402) to produce a damped response (404) and then monitoring the damped response (406) of the speaker.

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patent: 05172689 (1993-07-01), None

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