Electrical audio signal processing systems and devices – Monitoring/measuring of audio devices
Reexamination Certificate
2011-05-24
2011-05-24
Chin, Vivian (Department: 2614)
Electrical audio signal processing systems and devices
Monitoring/measuring of audio devices
C381S059000, C700S094000
Reexamination Certificate
active
07949140
ABSTRACT:
A sound measuring apparatus for measuring a sound-arrival delay time from a speaker to a microphone on the basis of a result obtained by outputting a test signal from the speaker and picking up the test signal using the microphone includes the following elements. A control unit performs control so that the test signal is expanded in a time axis and is then output from the speaker. A delay time measuring unit measures an expansion-based measured delay time on the basis of a delay time that is measured on the basis of a time difference between the test signal expanded in the time axis and output from the speaker and a signal obtained from the microphone by picking up the output expanded test signal, and obtains the sound-arrival delay time as the expansion-based measured delay time.
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Chin Vivian
Lao Lun-See
Sony Corporation
Wolf Greenfield & Sacks P.C.
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