发明名称 |
IMPULSE RESPONSE MEASURING METHOD AND IMPULSE RESPONSE MEASURING DEVICE |
摘要 |
An impulse response measurement with high precision is made possible with a simple device or signal processing, even if sampling clocks on the transmitting side and the receiving side are asynchronous at the time of measuring an impulse response of a measured system. An impulse response measuring method includes an input signal generating step of generating an input signal of an arbitrary waveform to be input to a measured system by using a synchronization signal having a first sampling clock frequency, a signal converting step of performing conversion on a measured signal output from the measured system into a discrete value system by using a synchronization signal having a second sampling clock frequency, and an inverse filter correcting step of correcting at least a phase of an inverse filter which is an inverse function of a function showing a frequency characteristic of the input signal according to a frequency ratio of the first sampling clock frequency and the second sampling clock frequency. Then, the impulse response of the measured system is measured using the inverse filter after correction.
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申请公布号 |
EP2455768(A1) |
申请公布日期 |
2012.05.23 |
申请号 |
EP20100799765 |
申请日期 |
2010.07.07 |
申请人 |
ETANI ELECTRONICS CO., LTD. |
发明人 |
HINO, SHOKICHIRO;KOIDE, HIROSHI;SHOJI, AKIHIKO;TSUCHIYA, KOICHI;ENDO, TOMOHIKO;XIE, QIUSHENG |
分类号 |
G01R27/28;G01H3/08;G01H17/00;G10K15/00 |
主分类号 |
G01R27/28 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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