Headphone with active noise cancelling and auto-calibration method thereof
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United States of America Patent
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Nov 24, 2015
Grant Date -
Apr 2, 2015
app pub date -
Apr 8, 2014
filing date -
Sep 30, 2013
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Abstract
A headphone with active noise cancelling and auto-calibration method thereof is disclosed. The headphone includes a first gain-amplifier, an active noise cancelling module, a speaker, a measurement circuit, a calibration control circuit and USB driving circuit. Auto-calibration of the headphone is by use of a USB interface in the instant disclosure, so as to significantly reduce calibration time and then improve production efficiency.
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