07949140 is referenced by 52 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.

Title
Sound measuring apparatus and method, and audio signal processing apparatus
Application Number
11/542846
Publication Number
7949140 (B2)
Application Date
October 4, 2006
Publication Date
May 24, 2011
Inventor
Yasuyuki Kino
Tokyo
JP
Agent
Wolf Greenfield & Sacks P C
Assignee
Sony Corporation
JP
IPC
H04R 29/00
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