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US 11,908,444 B2Granted
Wave-domain approach for cancelling noise entering an aperture
AssigneeGN Hearing A/S
InventorsWillem Bastiaan Kleijn, Daan Ratering
Life of this patent
Estimating the term…
Abstract
An apparatus for providing active noise control, includes: one or more microphones configured to detect sound entering through an aperture of a building structure; a set of speakers configured to provide sound output for cancelling or reducing at least some of the sound; and a processing unit communicatively coupled to the set of speakers, wherein the processing unit is configured to provide control signals to operate the speakers, wherein the control signals are independent of an error-microphone output.
Claims31
An apparatus for providing active noise control, comprising:
- one or more microphones configured to detect sound entering through an aperture of a building structure;
- a set of speakers configured to provide sound output for cancelling or reducing at least some of the sound;
- and
- a processing unit communicatively coupled to the set of speakers, wherein the processing unit is configured to provide control signals to operate the speakers, wherein the control signals are independent of an error-microphone output;
- wherein the processing unit is configured to obtain filter weights for the speakers, and wherein the control signals are based on the filter weights;
- and
- wherein the filter-weights for the speakers are based on an orthonormal set of basis functions.
4 more elements
An apparatus for providing active noise control, comprising:
- one or more microphones configured to detect sound entering through an aperture of a building structure;
- a set of speakers configured to provide sound output for cancelling or reducing at least some of the sound;
- and
- a processing unit communicatively coupled to the set of speakers, wherein the processing unit is configured to provide control signals to operate the speakers;
- wherein the processing unit is configured to obtain filter weights for the speakers, and wherein the control signals are based on the filter weights;
- and
- wherein the filter weights for the speakers are based on an open-loop algorithm.
4 more elements
An apparatus for providing active noise control, comprising:
- one or more microphones configured to detect sound entering through an aperture of a building structure;
- a set of speakers configured to provide sound output for cancelling or reducing at least some of the sound;
- and
- a processing unit communicatively coupled to the set of speakers, wherein the processing unit is configured to provide control signals to operate the speakers;
- wherein the processing unit is configured to obtain filter weights for the speakers, and wherein the control signals are based on the filter weights;
- and
- wherein the filter weights for the speakers are determined off-line.
4 more elements
An apparatus for providing active noise control, comprising:
- one or more microphones configured to detect sound entering through an aperture of a building structure;
- a set of speakers configured to provide sound output for cancelling or reducing at least some of the sound;
- and
- a processing unit communicatively coupled to the set of speakers, wherein the processing unit is configured to provide control signals to operate the speakers;
- wherein the processing unit is configured to obtain filter weights for the speakers, and wherein the control signals are based on the filter weights;
- and
- wherein the filter-weights for the speakers are based on a wave-domain algorithm.
4 more elements
An apparatus for providing active noise control, comprising:
- one or more microphones configured to detect sound entering through an aperture of a building structure;
- a set of speakers configured to provide sound output for cancelling or reducing at least some of the sound;
- and
- a processing unit communicatively coupled to the set of speakers, wherein the processing unit is configured to provide control signals to operate the speakers;
- wherein the building structure comprises a room, and wherein the processing unit is configured to operate the speakers so that at least some of the sound is cancelled or reduced within a region that is located behind the aperture inside the room.
2 more elements
An apparatus for providing active noise control, comprising:
- one or more microphones configured to detect sound entering through an aperture of a building structure;
- a set of speakers configured to provide sound output for cancelling or reducing at least some of the sound;
- and
- a processing unit communicatively coupled to the set of speakers, wherein the processing unit is configured to provide control signals to operate the speakers;
- wherein the building structure comprises a room, and wherein the aperture comprises a window or a door of the room.
2 more elements
An apparatus for providing active noise control, comprising:
- one or more microphones configured to detect sound entering through an aperture of a building structure;
- a set of speakers configured to provide sound output for cancelling or reducing at least some of the sound;
- and
- a processing unit communicatively coupled to the set of speakers, wherein the processing unit is configured to provide control signals to operate the speakers;
- wherein the one or more microphones are positioned and/or oriented to detect the sound before the sound enters through the aperture.
2 more elements
An apparatus for providing active noise control, comprising:
- one or more microphones configured to detect sound entering through an aperture of a building structure;
- a set of speakers configured to provide sound output for cancelling or reducing at least some of the sound;
- and
- a processing unit communicatively coupled to the set of speakers, wherein the processing unit is configured to provide control signals to operate the speakers, wherein the control signals are independent of an error-microphone output;
- wherein the processing unit is configured to provide the control signals to operate the speakers without requiring the error-microphone output from any error-microphone.
2 more elements
An apparatus for providing active noise control, comprising:
- one or more microphones configured to detect sound entering through an aperture of a building structure;
- a set of speakers configured to provide sound output for cancelling or reducing at least some of the sound;
- and
- a processing unit communicatively coupled to the set of speakers, wherein the processing unit is configured to provide control signals to operate the speakers;
- wherein the processing unit is also configured to obtain an error-microphone output from an error-microphone during an off-line calibration procedure.
2 more elements
An apparatus for providing active noise control, comprising:
- one or more microphones configured to detect sound entering through an aperture of a building structure;
- a set of speakers configured to provide sound output for cancelling or reducing at least some of the sound;
- and
- a processing unit communicatively coupled to the set of speakers, wherein the processing unit is configured to provide control signals to operate the speakers;
- wherein the processing unit is configured to provide the control signals based on filter weights, and wherein the filter weights are based on an orthonormal set of basis functions.
2 more elements
An apparatus for providing active noise control, comprising a processing unit, wherein the processing unit is configured to communicatively couple with:
- one or more microphones configured to detect sound entering through an aperture of a building structure, and
- a set of speakers configured to provide sound output for cancelling or reducing at least some of the sound;
- wherein the processing unit is configured to provide control signals to operate the speakers;
- and
- wherein the processing unit is configured to provide the control signals based on filter weights, the filter weights being based on an orthonormal set of basis functions.
2 more elements
Dependencies are inferred from the claim text.