Electrical audio signal processing systems and devices – Monitoring/measuring of audio devices
Reexamination Certificate
2004-04-23
2009-08-04
Chin, Vivian (Department: 2614)
Electrical audio signal processing systems and devices
Monitoring/measuring of audio devices
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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Garcia Jorge L.
Pavlov Peter M.
Shi Jianfeng
Yeager David M.
Blair Kile
Chin Vivian
Doutre Barbara R.
Motorola Inc.
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