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Method and device for detecting the presence and energy of a given frequency in a sound and application to detection of knocking in combustion engines
Method and device for detecting the presence and energy of a given frequency in a sound and application to detection of knocking in combustion engines
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机译:用于检测声音中给定频率的存在和能量的方法和装置以及在检测内燃机爆震中的应用
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摘要
The noise signal is sampled at a variable rate determined by the speed passed through an anti aliasing filter and numerically filtered with fixed coefficients but a cut off related to the sampling rate so as to detect the engine knocking frequency.
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