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    Helmholtz resonator and low-frequency broadband sound-absorbing and noise-reducing structure based on the same
    1.
    发明授权
    Helmholtz resonator and low-frequency broadband sound-absorbing and noise-reducing structure based on the same 有权

    公开(公告)号：US12118973B2

    公开(公告)日：2024-10-15

    申请号：US17772517

    申请日：2020-08-31

    申请人： TONGJI UNIVERSITY

    发明人： Yong Li ,  Sibo Huang ,  Zhiling Zhou

    IPC分类号： G10K11/172 ,  G10K11/162

    CPC分类号： G10K11/172 ,  G10K11/162

    摘要： A Helmholtz resonator and a low-frequency broadband sound-absorbing and noise-reducing structure based on the same is provided. The Helmholtz resonator includes a Helmholtz resonator body, at least one embedded tube is disposed in the Helmholtz resonator body, and an inner surface of an opening of the Helmholtz resonator body wraps around an outer side of one of the embedded tubes; and all the embedded tubes are not in contact with each other. The low-frequency broadband sound-absorbing and noise-reducing structure includes a rigid framework, and at least two Helmholtz resonators are disposed in parallel in the framework. The Helmholtz resonator not only achieves a better low-frequency broadband sound absorption and noise reduction effect, but also reduces a thickness of the Helmholtz resonator more effectively. The low-frequency broadband sound-absorbing and noise-reducing structure enhances a sound absorption effect of each weak sound-absorbing Helmholtz resonator, and further achieves more efficient sound absorption.

    DEVICES AND METHODS FOR OCCLUDING A DUCT AND ATTENUATING SOUND
    2.
    发明公开
    DEVICES AND METHODS FOR OCCLUDING A DUCT AND ATTENUATING SOUND 审中-公开

    公开(公告)号：US20240315878A1

    公开(公告)日：2024-09-26

    申请号：US18677519

    申请日：2024-05-29

    申请人： Marc C. Ramsey

    发明人： Marc C. Ramsey

    IPC分类号： A61F11/10 ,  A61F11/08 ,  G10K11/162

    CPC分类号： A61F11/10 ,  A61F11/085 ,  G10K11/162 ,  A61F2250/0003 ,  A61F2250/0007

    摘要： Systems and methods for occluding a duct and attenuating sound may be provided. In some embodiments, a device for attenuating sound passing through a duct or orifice may include a body sized and shaped to be inserted, at least partially, into a duct or orifice. The body may have an interior volume that contains a fluid suspension. In some embodiments, the fluid suspension may include a plurality of gas-filled spheres dispersed in an interstitial fluid. The gas-filled spheres may increase an acoustic attenuation of the fluid suspension relative to the interstitial fluid alone.

    Methods and apparatus for a sound reducing mask
    3.
    发明授权
    Methods and apparatus for a sound reducing mask 有权

    公开(公告)号：US12089673B2

    公开(公告)日：2024-09-17

    申请号：US17865561

    申请日：2022-07-15

    申请人： Justin Smith

    发明人： Justin Smith

    IPC分类号： A41D31/04 ,  A41D13/11 ,  G10K11/162

    CPC分类号： A41D31/04 ,  A41D13/1161 ,  G10K11/162

    摘要： Methods and apparatus for a sound reducing mask wearable by a user according to various embodiments may include a body portion contoured to form a seal with the user's face when the body portion is placed over the user's mouth. The sound reducing mask may also include an air intake assembly including an inlet and a unidirectional flap configured to move between an open position and a closed position. Methods and apparatus for a sound reducing mask may further include a muffler configured to muffle noise made by the user.

    Ultrasonic device having sound absorbing material with uneven shape
    6.
    发明授权
    Ultrasonic device having sound absorbing material with uneven shape 有权

    公开(公告)号：US12070774B2

    公开(公告)日：2024-08-27

    申请号：US17459579

    申请日：2021-08-27

    申请人： TDK CORPORATION

    发明人： Tatsuya Taki

    IPC分类号： B06B1/06 ,  G10K11/00 ,  G10K11/162

    CPC分类号： B06B1/0681 ,  G10K11/002 ,  G10K11/162

    摘要： An ultrasonic device according to one aspect includes a case, a piezoelectric element, a sound absorbing material, and a vibration-proof material. The case defines a housing space. The piezoelectric element is disposed in the housing space. The sound absorbing material is disposed on a main face of the piezoelectric element and is made of a foaming material. The vibration-proof material is disposed around the sound absorbing material. The sound absorbing material includes a first opposing face opposed to the main face. The first opposing face has an uneven shape in which a plurality of protruding portions and a plurality of depression portions are alternately continued, and is rougher than the main face.

    Voice Isolation Mask Apparatus
    7.
    发明公开
    Voice Isolation Mask Apparatus 审中-公开

    公开(公告)号：US20240282285A1

    公开(公告)日：2024-08-22

    申请号：US18111910

    申请日：2023-02-21

    申请人： Eduardo Reveron ,  Efrain Luis Reveron ,  Carlos Antonio Lugo

    发明人： Eduardo Reveron ,  Efrain Luis Reveron ,  Carlos Antonio Lugo

    IPC分类号： G10K11/162 ,  A41D13/11

    CPC分类号： G10K11/162 ,  A41D13/1161

    摘要： The present disclosure provides a voice suppression mask apparatus which covers only the mouth of a wearer, forming a seal about the mouth to form a voice cavity and preventing the transmission of sounds between the voice cavity and the external environment of the wearer via a vacuum-sealed chamber. The mask apparatus further comprises an inlet passage with a port for a microphone tip, facilitating voice calls in privacy even in crowded environments, and preventing noisy environments from affecting the quality of audio captured by a wearer's microphone. The walls of the sealed chamber may also be transparent to facilitate video calls.

    AN ACOUSTIC LIGHTING DEVICE
    9.
    发明公开
    AN ACOUSTIC LIGHTING DEVICE 审中-公开

    公开(公告)号：US20240210000A1

    公开(公告)日：2024-06-27

    申请号：US18288396

    申请日：2022-05-10

    申请人： SIGNIFY HOLDING B.V.

    发明人： TIES VAN BOMMEL ,  RIFAT ATA MUSTAFA HIKMET ,  JOHANNES PETRUS MARIA ANSEMS

    IPC分类号： F21S8/04 ,  F21V3/04 ,  F21V7/05 ,  F21V13/02 ,  G10K11/162

    CPC分类号： F21S8/04 ,  F21V3/049 ,  F21V7/05 ,  F21V13/02 ,  G10K11/162 ,  F21V2200/20

    摘要： The present invention generally relates to the field of acoustically absorbing lighting devices, and in particular to an acoustic lighting tiles. Such an acoustic lighting tile (100) comprises a first light source (101) and a light guide panel (102). The first light source (101) is configured to provide, in operation, a first light source light. The light guide panel (102) comprises a bottom surface (111), a top surface (112) opposite to the bottom surface (111), and a first edge surface (113) that extends between the bottom surface (111) from the top surface (112), the first edge surface (113) being configured to receive the first light source light from the first light source (101). The light guide panel (102) comprises a plurality of slits (114), and at least part of each slit of the plurality of slits (114) tapers towards the first edge surface (113).