发明申请
- 专利标题: Impulse Response Measurement Method and Device
- 专利标题(中): 脉冲响应测量方法和装置
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申请号: US11658099申请日: 2005-07-12
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公开(公告)号: US20080025521A1公开(公告)日: 2008-01-31
- 发明人: Masanori Morise , Toshio Irino , Hideki Kawahara , Hideki Banno
- 申请人: Masanori Morise , Toshio Irino , Hideki Kawahara , Hideki Banno
- 申请人地址: JP Wakayama-shi 6408510
- 专利权人: Wakayama University
- 当前专利权人: Wakayama University
- 当前专利权人地址: JP Wakayama-shi 6408510
- 优先权: JP2004-221942 20040722
- 国际申请: PCT/JP05/12812 WO 20050712
- 主分类号: H04R29/00
- IPC分类号: H04R29/00
摘要:
A method, device, system, program and recording medium for impulse response measurement which can improve a measurement accuracy without lowering the S/N ratio over the whole range, from lower frequencies to higher frequencies, of a measuring signal are provided. A signal generation unit (21) of a device for impulse response measurement (10-1) generates a W-TSP signal (x(t)) having characteristics of a TSP signal and a Log-TSP signal. A D/A conversion unit (22) converts the digital signal (x(t)) into an analog signal (x(t)) and outputs the converted signal to a headphone (2) or a speaker (5). An A/D conversion unit (23) inputs an analog signal (y(t)) received by a microphone (3) or a microphone (6) and converts the inputted signal into a digital signal (y(t)). An inverse signal generation unit (24) generates an inverse W-TSP signal (x(t)). A convolution unit (25) convolutes the signal (y(t)) and the inverse W-TSP signal (x−1(t)) thereby to calculate an impulse response (g(t)).
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