Invention Grant
US08111831B2 Acoustic apparatus, time delay computation method, and recording medium
有权
声学装置,时间延迟计算方法和记录介质
- Patent Title: Acoustic apparatus, time delay computation method, and recording medium
- Patent Title (中): 声学装置,时间延迟计算方法和记录介质
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Application No.: US11410881Application Date: 2006-04-25
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Publication No.: US08111831B2Publication Date: 2012-02-07
- Inventor: Kohei Asada , Tetsunori Itabashi
- Applicant: Kohei Asada , Tetsunori Itabashi
- Applicant Address: JP
- Assignee: Sony Corporation
- Current Assignee: Sony Corporation
- Current Assignee Address: JP
- Agency: Lerner, David, Littenberg, Krumholz & Mentlik, LLP
- Priority: JP2005-127577 20050426
- Main IPC: H04R29/00
- IPC: H04R29/00 ; H04R5/02

Abstract:
An acoustic apparatus includes a positive value conversion section configured to convert, into a positive value, a response signal obtained by collecting a test signal emitted from a speaker using a microphone; a detection section configured to detect a first transient response part that becomes a first mountain portion of the converted response signal; an estimation section configured to estimate a rise point of the converted response signal from at least N points that contain a peak position of the first transient response part or the vicinity thereof; and a computation section configured to compute a time delay of audio collected by the microphone based on the estimated rise point and on a timing at which the test signal is generated.
Public/Granted literature
- US20060256970A1 Acoustic apparatus, time delay computation method, and recording medium Public/Granted day:2006-11-16
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