发明授权
US07260227B2 Method and device for measuring sound wave propagation time between loudspeaker and microphone
有权
用于测量扬声器和麦克风之间的声波传播时间的方法和装置
- 专利标题： Method and device for measuring sound wave propagation time between loudspeaker and microphone
- 专利标题（中）： 用于测量扬声器和麦克风之间的声波传播时间的方法和装置
-
申请号： US10537981申请日： 2003-12-09
-
公开(公告)号： US07260227B2公开(公告)日： 2007-08-21
- 发明人: Daisuke Higashihara , Shokichiro Hino , Koichi Tsuchiya , Tomohiko Endo
- 申请人： Daisuke Higashihara , Shokichiro Hino , Koichi Tsuchiya , Tomohiko Endo
- 申请人地址： JP Tokyo JP Hyogo
- 专利权人： Etani Electronics Co., Ltd.,TOA Corporation
- 当前专利权人： Etani Electronics Co., Ltd.,TOA Corporation
- 当前专利权人地址： JP Tokyo JP Hyogo
- 代理机构： Marshall, Gerstein & Borun LLP
- 优先权： JP2002-357095 20021209
- 国际申请： PCT/JP03/15702 WO 20031209
- 国际公布： WO2004/054319 WO 20040624
- 主分类号： H04R29/00
- IPC分类号： H04R29/00
摘要：
A device 1 for measuring a propagation time of a sound wave comprises a sound source means 11 and a calculation means 12. The sound source means 11 outputs a time stretched pulse as a sound source signal input to a speaker 3. The calculation means 12 calculates a cross-correlation function of the time stretched pulse and the sound signal which is output from the speaker 3 and is received in a microphone 4. Based on the cross-correlation function, the propagation time of the sound wave between the speaker 3 and the microphone 4 is found.
公开/授权文献
信息查询
