Method and apparatus for noise cancellation in a wireless mobile device using an external headset
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United States of America Patent
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Apr 4, 2017
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N/A
app pub date -
Feb 23, 2015
filing date -
Feb 24, 2014
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Abstract
A method, system, and apparatus for noise cancelation is disclosed herein, which may be used in a wireless unit (WU) and a headset removably connected to the WU. The WU may include a processor, a memory, a user interface, internal microphones and internal speakers. The headset may include microphones and speakers, and be powered by the WU. The WU may receive an ambient noise at microphone(s), including a headset microphone, which may generate a signal based on the ambient noise. The WU processor may then calculate an estimate of the ambient noise based on the signal, calculate an inverse of the estimated ambient noise based on the estimate of the ambient noise, cancel the estimated ambient noise from an audio output signal based on the application of the inverse of the estimated ambient noise, and send the audio output signal to the speakers of the headset or the WU.
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