发明名称 |
Apparatus for detecting the number of beats |
摘要 |
An apparatus for detecting the number of beats in that second time measuring means starts to measure time from a time point when the level of a predetermined frequency component of an input audio signal is once higher than a predetermined level and, after a predetermined period T1 elapses from the time point, the measurement of time by the second time measuring means is terminated at a time point when the level of the predetermined frequency component of the input audio signal is again higher than the predetermined level, thereby to convert a measured period T2 at termination of measuring of the second time measuring means into BPM i.e., the number of beats per predetermined unit time regarding as a unit beat.
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申请公布号 |
US5614687(A) |
申请公布日期 |
1997.03.25 |
申请号 |
US19950573398 |
申请日期 |
1995.12.15 |
申请人 |
PIONEER ELECTRONIC CORPORATION |
发明人 |
YAMADA, YOICHI;KIMURA, TOMOHIKO;FUNADA, TAKEAKI;INOSHITA, GEN |
分类号 |
G10H1/00;G10H1/40;(IPC1-7):G10H7/00 |
主分类号 |
G10H1/00 |
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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