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    Dynamic compensation in active noise reduction devices
    2.
    发明授权
    Dynamic compensation in active noise reduction devices 有权

    公开(公告)号：US10553195B2

    公开(公告)日：2020-02-04

    申请号：US15473889

    申请日：2017-03-30

    Applicant: Bose Corporation

    Inventor： Michael O'Connell ,  Joseph H. Cattell ,  David J. Warkentin

    IPC: G10K11/178 ,  H04R3/00 ,  H04R1/10

    Abstract: The technology described in this document can be embodied in a method that includes receiving an input signal representing audio captured by one or more sensors of an active noise reduction (ANR) headphone, and generating, based on the input signal, a first signal by a compensator disposed in an ANR signal flow path. The method also includes determining one or more characteristics of the first signal, and selecting, based on the one or more characteristics of the first signal, a plurality of filter coefficients for a digital filter disposed in series with the compensator in the ANR signal flow path. The filter coefficients are selected in accordance with a target frequency response of the digital filter. The method further includes generating, by processing the input signal using the plurality of filter coefficients of the digital filter, a feedback control signal for an electroacoustic transducer of the ANR headphone.

    Parallel compensation in active noise reduction devices
    3.
    发明授权
    Parallel compensation in active noise reduction devices 有权

    公开(公告)号：US10580398B2

    公开(公告)日：2020-03-03

    申请号：US15473926

    申请日：2017-03-30

    Applicant: Bose Corporation

    Inventor： Joseph H. Cattell ,  Michael O'Connell ,  Ricardo F. Carreras

    IPC: G10K11/178

    Abstract: The technology described in this document can be embodied in a method that includes receiving an input signal representing audio captured by a microphone of an active noise reduction (ANR) headphone, and processing, by a first compensator, a first frequency range of the input signal to generate a first signal for an acoustic transducer of the ANR headphone. The method also includes processing, by a second compensator disposed in parallel to the first compensator, a second frequency range of the input signal to generate a second signal for the acoustic transducer. The first frequency range includes frequencies higher than the frequencies in the second frequency range. The method also includes detecting, by one or more processing devices, that the second signal satisfies a threshold condition, and attenuating the second signal responsive to determining that the second signal satisfies the threshold condition.

    Parallel Compensation in Active Noise Reduction Devices
    4.
    发明申请
    Parallel Compensation in Active Noise Reduction Devices 审中-公开

    公开(公告)号：US20180286374A1

    公开(公告)日：2018-10-04

    申请号：US15473926

    申请日：2017-03-30

    Applicant: Bose Corporation

    Inventor： Joseph H. Cattell ,  Michael O'Connell ,  Ricardo F. Carreras

    IPC: G10K11/178

    CPC classification number: G10K11/178 ,  G10K11/17881 ,  G10K2210/1081 ,  G10K2210/3025 ,  G10K2210/3028 ,  G10K2210/3056

    Abstract: The technology described in this document can be embodied in a method that includes receiving an input signal representing audio captured by a microphone of an active noise reduction (ANR) headphone, and processing, by a first compensator, a first frequency range of the input signal to generate a first signal for an acoustic transducer of the ANR headphone. The method also includes processing, by a second compensator disposed in parallel to the first compensator, a second frequency range of the input signal to generate a second signal for the acoustic transducer. The first frequency range includes frequencies higher than the frequencies in the second frequency range. The method also includes detecting, by one or more processing devices, that the second signal satisfies a threshold condition, and attenuating the second signal responsive to determining that the second signal satisfies the threshold condition.

    Dynamic Compensation in Active Noise Reduction Devices
    5.
    发明申请
    Dynamic Compensation in Active Noise Reduction Devices 审中-公开

    公开(公告)号：US20180286373A1

    公开(公告)日：2018-10-04

    申请号：US15473889

    申请日：2017-03-30

    Applicant: Bose Corporation

    Inventor： Michael O'Connell ,  Joseph H. Cattell ,  David J. Warkentin

    IPC: G10K11/178 ,  H04R1/10

    CPC classification number: G10K11/178 ,  G10K11/17881 ,  G10K2210/1081 ,  G10K2210/3028 ,  G10K2210/3056 ,  H04R1/1041 ,  H04R1/1083 ,  H04R3/005 ,  H04R2460/01

    Abstract: The technology described in this document can be embodied in a method that includes receiving an input signal representing audio captured by one or more sensors of an active noise reduction (ANR) headphone, and generating, based on the input signal, a first signal by a compensator disposed in an ANR signal flow path. The method also includes determining one or more characteristics of the first signal, and selecting, based on the one or more characteristics of the first signal, a plurality of filter coefficients for a digital filter disposed in series with the compensator in the ANR signal flow path. The filter coefficients are selected in accordance with a target frequency response of the digital filter. The method further includes generating, by processing the input signal using the plurality of filter coefficients of the digital filter, a feedback control signal for an electroacoustic transducer of the ANR headphone.

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