发明名称 |
ACOUSTIC SENSOR WITH AN ACOUSTIC OBJECT DETECTOR FOR REDUCING POWER CONSUMPTION IN FRONT-END CIRCUIT |
摘要 |
<p>An acoustic object detector for detecting presence of an acoustic signal is provided. The acoustic object detector includes a number of bandpass filters. Each bandpass filter is configured to convert an input signal into an analog signal within a frequency band. The acoustic object detector also includes a number of spike generating circuits each coupled to the respective bandpass filter. Each spike generating circuit is configured to generate a series of spike signals based upon an adaptive threshold for the analog signal. The acoustic object detection further includes a decision circuit configured to generate a digital signal at a time-frequency point from the series of spike signals.</p> |
申请公布号 |
WO2012108918(A1) |
申请公布日期 |
2012.08.16 |
申请号 |
WO2011US60229 |
申请日期 |
2011.11.10 |
申请人 |
THE TRUSTEES OF DARTMOUTH COLLEGE;DU, DINGKUN;ODAME, KOFI |
发明人 |
DU, DINGKUN;ODAME, KOFI |
分类号 |
G01H11/00;G01H17/00 |
主分类号 |
G01H11/00 |
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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