Fan examination method and fan examination system
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United States of America Patent
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Jun 9, 2020
Grant Date -
May 23, 2019
app pub date -
Jan 10, 2018
filing date -
Nov 23, 2017
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An examination method comprises: generating a received audio signal according to sound generated from rotation of the fan by an audio receiving device; performing Fourier transform on the received audio signal to obtain a reference frequency domain signal; recognizing a plurality of characteristic bands according to the reference frequency domain signal; adjusting the received audio signal according to the characteristic bands respectively to form a plurality of casting audio signals corresponding to frequency components in the characteristic bands respectively; playing the casting signals sequentially by an audio casting device; and recognizing at least one key band among the characteristic bands according to the transmission rate of the hard drive upon playing the casting signals.
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Family
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