Power-Adaptive Active Noise Reduction (ANR) Headset
AssigneeBose Corporation
InventorPaul G. Yamkovoy
Life of this patent
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Abstract
Various aspects include active noise reduction (ANR) headsets and methods of controlling such headsets. In some implementations, a headset includes: at least one electro-acoustic transducer; a power source for powering the at least one electro-acoustic transducer, and a control circuit configured to apply active noise reduction (ANR) to environmental sound using the at least one electro-acoustic transducer, sample voltage drops across the power source, and adjust a compressor threshold for the ANR based on the sampled voltage drops across the power source.
Claims20
A headset comprising:
- at least one electro-acoustic transducer configured to provide an audio output;
- a power source for powering the at least one electro-acoustic transducer;
- and
- a control circuit configured to
- apply active noise reduction (ANR) to environmental sound using the at least one electro-acoustic transducer,
- sample voltage drops across the power source, and
- adjust a compressor threshold for the ANR based on the sampled voltage drops across the power source.
A method of controlling an active noise reduction (ANR) headset, the method comprising:
- applying ANR to environmental sound using the headset,
- sampling voltage drops across a power source for the headset, and
- adjusting a compressor threshold for the ANR based on the sampled voltage drops across the power source.
An aviation headset comprising:
- at least one electro-acoustic transducer configured to provide an audio output;
- a power source for powering the at least one electro-acoustic transducer, wherein the aviation headset is configured to operate at a given time with a battery as the power source or an external a hard-wired connection with aircraft power as the power source;
- and
- a control circuit configured to:
- apply active noise reduction (ANR) to environmental sound using the at least one electro-acoustic transducer,
- sample voltage drops across the power source, and
- adjust a compressor threshold for the ANR based on the sampled voltage drops across the power source,
- wherein a first compressor threshold for the ANR is applied while the battery is the power source, and a second compressor threshold for the ANR is applied while the hard-wired connection with aircraft power is the power source.
Dependencies are inferred from the claim text.