Apparatus and method for checking loudspeaker

Details Apparatus and method for checking loudspeaker Apparatus and method for checking loudspeaker

2006-05-01

2010-10-12

Chin, Vivian (Department: 2614)

Electrical audio signal processing systems and devices

Monitoring/measuring of audio devices

C700S094000

Reexamination Certificate

active

07813514

ABSTRACT:
A loudspeaker checking apparatus includes a signal generating unit configured to generate a test tone signal by adding first and second sinusoidal signals of different frequencies; a control circuit configured to allow the signal generating unit to generate a plurality of test tone signals by varying the frequencies; an output circuit configured to simultaneously supply the plurality of test tone signals to a plurality of loudspeakers, respectively; an analyzing unit configured to perform frequency analysis on an output signal from a microphone that picks up test tones output from the plurality of loudspeakers; and a determining unit configured to determine whether the respective loudspeakers are normal or abnormal on the basis of an analysis result made by the analyzing unit.

REFERENCES:
patent: 6766025 (2004-07-01), Levy et al.
patent: 7043027 (2006-05-01), Wood
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patent: 2004-172661 (2004-06-01), None
patent: 2004-297368 (2004-10-01), None
patent: 2004-297368 (2004-10-01), None

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