07949140 is referenced by 57 patents and cites 12 patents.

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.

Sound measuring apparatus and method, and audio signal processing apparatus
Application Number
Publication Number
7949140 (B2)
Application Date
October 4, 2006
Publication Date
May 24, 2011
Yasuyuki Kino
Wolf Greenfield & Sacks P C
Sony Corporation
H04R 29/00
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