Systems and methods for noise cancellation and power management in a wireless headset
First Claim
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1. A method comprising:
- receiving with a wireless headset an audio signal;
in response to the receiving, transmitting the received audio signal from the wireless headset to an external device that is in communication with the wireless headset wherein the transmitted audio signal is processed with the external device; and
controlling with the external device a noise cancellation system of the wireless headset based on the processed audio signal, wherein processing the transmitted audio signal with the external device comprises comparing an amount of ambient noise that is present in the transmitted audio signal to a cutoff value; and
the controlling the noise cancellation system comprises turning off at least part of the noise cancellation system based on the result of the comparing of the amount of ambient noise relative to the cutoff value.
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Abstract
This includes systems and methods for noise cancellation and power management in a wireless headset. The wireless headset can perform noise cancellation by using two or more omni-directional microphones to generate a noise canceling “cone.” Audio signals received outside of the cone can be filtered out. An accelerometer can be used to determine the location of the wireless headset and the system can then properly position the cone to face the user'"'"'s voice and filter out other audio signals. Additionally, by monitoring the ambient noise, the system can save power by turning off the noise cancellation system when the amount of ambient noise is below a threshold value.
15 Citations
16 Claims
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1. A method comprising:
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receiving with a wireless headset an audio signal; in response to the receiving, transmitting the received audio signal from the wireless headset to an external device that is in communication with the wireless headset wherein the transmitted audio signal is processed with the external device; and controlling with the external device a noise cancellation system of the wireless headset based on the processed audio signal, wherein processing the transmitted audio signal with the external device comprises comparing an amount of ambient noise that is present in the transmitted audio signal to a cutoff value; and
the controlling the noise cancellation system comprises turning off at least part of the noise cancellation system based on the result of the comparing of the amount of ambient noise relative to the cutoff value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A machine readable non-transitory storage medium containing executable instructions which when executed by a data processing system cause the system to perform a method comprising:
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receiving at an external device, an audio signal from a wireless headset that is in communication with the external device; processing the received audio signal with the external device; and in response to the processing the audio signal, controlling with the external device a noise cancellation system of the wireless headset based on the processed audio signal, wherein the processing the audio signal with the external device comprises comparing an amount of ambient noise that is present in the audio signal to a cutoff value, wherein; and
the controlling the noise cancellation system comprises causing at least part of the noise cancellation system to be turned off based on the result of the comparing of the amount of ambient noise relative to the cutoff value. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification