Active noise control with compensation for acoustic leak in personal listening devices
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United States of America Patent
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Mar 22, 2016
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app pub date -
Feb 22, 2014
filing date -
Feb 22, 2014
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Abstract
An acoustic noise cancellation (ANC) process is performed during in-the-field use of a personal listening audio device, using a control filter to produce anti-noise by the device. The process includes computing an S_hat filter that estimates a signal path between an earpiece speaker of the device and an error microphone that are at a user's ear. A response associated with the computed S_hat filter is compared to a predetermined response that is stored in the device. The control filter is adjusted in accordance with the comparison. Other embodiments are also described and claimed.
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