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    METHODS AND SYSTEMS FOR BROAD-BAND ACTIVE NOISE REDUCTION
    1.
    发明申请
    METHODS AND SYSTEMS FOR BROAD-BAND ACTIVE NOISE REDUCTION 审中-公开

    公开(公告)号：US20200051543A1

    公开(公告)日：2020-02-13

    申请号：US16657786

    申请日：2019-10-18

    Applicant: The Boeing Company

    Inventor： Steven F. Griffin ,  Adam R. Weston ,  Mark M. Gmerek

    IPC: G10K11/178 ,  H04R1/02 ,  G10K11/172

    Abstract: Described are methods and systems for broad-band active reduction of noise in target spaces, such as spaces around headrests in aircraft cabins. Systems describe herein are effective over wide frequency ranges without causing undesirable amplification at any subrange ranges. Specifically, a system comprises a speaker and a resonator, both coupled to an enclosure. The interior space of the resonator is in fluid communication with the enclosed space of the enclosure, allowing the resonator to reduce the amplitude of unwanted amplification by the audio reducing sound generated by the speaker. The amplitude is reduced in a selected frequency range, which may correspond to an expected amplification for this particular system. The resonator may partially extend into the enclosure or may be completely incorporated into the enclosure. Some examples of the resonator include a Helmholtz resonator, a passive radiator, a quarter wave resonator, a pipe resonator, and an acoustic metamaterial.

    Ducts comprising exoskeleton and sound-absorbing structures and vehicles using such ducts
    2.
    发明授权
    Ducts comprising exoskeleton and sound-absorbing structures and vehicles using such ducts 有权

    公开(公告)号：US12013071B2

    公开(公告)日：2024-06-18

    申请号：US17373453

    申请日：2021-07-12

    Applicant: The Boeing Company

    Inventor： Bryce A. Vandyke ,  Douglas D. Maben ,  Dale Hastings ,  Mark M. Gmerek ,  Xin Han

    IPC: F16L55/033 ,  B64D13/06 ,  F16L55/035 ,  F24F13/02

    CPC classification number: F16L55/0336 ,  B64D13/06 ,  F16L55/0338 ,  F16L55/035 ,  F24F13/0263 ,  B64D2013/0603

    Abstract: Described herein are noise attenuating ducts and vehicles using these ducts for environmental control systems. A duct comprises an exoskeleton structure and a sound-absorbing structure, disposed within and conforming to the exoskeleton structure. The exoskeleton structure provides external mechanical support to the sound-absorbing structure thereby helping to maintain the tubular shape of the sound-absorbing structure. This external support does not interfere with the airflow inside the sound-absorbing structure. Furthermore, the external positioning of the exoskeleton structure allows the integration of various support mounting features for the installation of the duct in a vehicle. In some examples, the exoskeleton structure comprises a plurality of enclosed openings to reduce the weight of the exoskeleton structure and provide additional flexibility. Furthermore, additive manufacturing of the exoskeleton structure allows achieving a monolithic structure with various features and characteristics described above.

    DUCTS COMPRISING EXOSKELETON AND SOUND-ABSORBING STRUCTURES AND VEHICLES USING SUCH DUCTS
    6.
    发明申请
    DUCTS COMPRISING EXOSKELETON AND SOUND-ABSORBING STRUCTURES AND VEHICLES USING SUCH DUCTS 有权

    公开(公告)号：US20230010222A1

    公开(公告)日：2023-01-12

    申请号：US17373453

    申请日：2021-07-12

    Applicant: The Boeing Company

    Inventor： Bryce A. Vandyke ,  Douglas D. Maben ,  Dale Hastings ,  Mark M. Gmerek ,  Xin Han

    IPC: F16L55/033 ,  F16L55/035 ,  B64D13/06

    Abstract: Described herein are noise attenuating ducts and vehicles using these ducts for environmental control systems. A duct comprises an exoskeleton structure and a sound-absorbing structure, disposed within and conforming to the exoskeleton structure. The exoskeleton structure provides external mechanical support to the sound-absorbing structure thereby helping to maintain the tubular shape of the sound-absorbing structure. This external support does not interfere with the airflow inside the sound-absorbing structure. Furthermore, the external positioning of the exoskeleton structure allows the integration of various support mounting features for the installation of the duct in a vehicle. In some examples, the exoskeleton structure comprises a plurality of enclosed openings to reduce the weight of the exoskeleton structure and provide additional flexibility. Furthermore, additive manufacturing of the exoskeleton structure allows achieving a monolithic structure with various features and characteristics described above.

    Methods and systems for broad-band active noise reduction
    7.
    发明授权
    Methods and systems for broad-band active noise reduction 有权

    公开(公告)号：US10891934B2

    公开(公告)日：2021-01-12

    申请号：US16657786

    申请日：2019-10-18

    Applicant: The Boeing Company

    Inventor： Steven F. Griffin ,  Adam R. Weston ,  Mark M. Gmerek

    IPC: G10K11/16 ,  G10K11/178 ,  H04R1/02 ,  G10K11/172

    Abstract: Described are methods and systems for broad-band active reduction of noise in target spaces, such as spaces around headrests in aircraft cabins. Systems describe herein are effective over wide frequency ranges without causing undesirable amplification at any subrange ranges. Specifically, a system comprises a speaker and a resonator, both coupled to an enclosure. The interior space of the resonator is in fluid communication with the enclosed space of the enclosure, allowing the resonator to reduce the amplitude of unwanted amplification by the audio reducing sound generated by the speaker. The amplitude is reduced in a selected frequency range, which may correspond to an expected amplification for this particular system. The resonator may partially extend into the enclosure or may be completely incorporated into the enclosure. Some examples of the resonator include a Helmholtz resonator, a passive radiator, a quarter wave resonator, a pipe resonator, and an acoustic metamaterial.

    Methods and systems for broad-band active noise reduction
    8.
    发明授权
    Methods and systems for broad-band active noise reduction 有权

    公开(公告)号：US10453438B1

    公开(公告)日：2019-10-22

    申请号：US15992671

    申请日：2018-05-30

    Applicant: The Boeing Company

    Inventor： Steven F. Griffin ,  Adam R. Weston ,  Mark M. Gmerek

    IPC: G10K11/16 ,  G10K11/178 ,  H04R1/02 ,  G10K11/172 ,  H04R5/02

    Abstract: Described are methods and systems for broad-band active reduction of noise in target spaces, such as spaces around headrests in aircraft cabins. Systems describe herein are effective over wide frequency ranges without causing undesirable amplification at any subrange ranges. Specifically, a system comprises a speaker and a resonator, both coupled to an enclosure. The interior space of the resonator is in fluid communication with the enclosed space of the enclosure, allowing the resonator to reduce the amplitude of unwanted amplification by the audio reducing sound generated by the speaker. The amplitude is reduced in a selected frequency range, which may correspond to an expected amplification for this particular system. The resonator may partially extend into the enclosure or may be completely incorporated into the enclosure. Some examples of the resonator include a Helmholtz resonator, a passive radiator, a quarter wave resonator, a pipe resonator, and an acoustic metamaterial.

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