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    AUDIO CONFERENCING APPARATUS
    141.
    发明申请
    AUDIO CONFERENCING APPARATUS 有权
    音频会议设备

    公开(公告)号：US20090052684A1

    公开(公告)日：2009-02-26

    申请号：US12162934

    申请日：2007-01-17

    Applicant: Toshiaki Ishibashi

    Inventor： Toshiaki Ishibashi

    IPC: H04B3/20

    CPC classification number: H04R3/12 ,  H04R1/403 ,  H04R1/406 ,  H04R3/005 ,  H04R3/02 ,  H04R2201/403 ,  H04R2201/405 ,  H04R2430/20

    Abstract: Microphones arranged in an array shape along a longitudinal direction are respectively formed in both the longitudinal side surfaces of a housing 2 with substantially an elongated rectangular parallelepiped shape, and speakers arranged in an array shape along the longitudinal direction are formed in a lower surface. The speaker array forms sound emission beams based on sound emission directivity set according to a conference environment. On the other hand, when the microphone array forms sound collection beams by sound collection signals collected, a talker direction is detected from these beams and an output sound signal corresponding to this direction is formed and also is reflected on setting of the sound emission directivity. Also, when there are plural input sound signals, the sound emission directivity is set according to a use situation of the plural input sound signals.

    Abstract translation: 在壳体2的纵向侧表面上分别形成有沿纵向方向排列成阵列形状的麦克风，并且沿着纵向排列成阵列形状的扬声器形成在下表面。 扬声器阵列基于根据会议环境设定的声音发射方向，形成发声束。 另一方面，当麦克风阵列通过收集的声音收集信号形成声音采集波束时，从这些波束检测到讲话者方向，并且形成与该方向相对应的输出声音信号，并且也在声音发射方向性的设置上反映。 此外，当存在多个输入声音信号时，根据多个输入声音信号的使用情况设定声音发射方向性。

    Handsfree communication system
    143.
    发明申请
    Handsfree communication system 有权
    免提通信系统

    公开(公告)号：US20070172079A1

    公开(公告)日：2007-07-26

    申请号：US11701629

    申请日：2007-02-02

    Applicant: Markus Christoph

    Inventor： Markus Christoph

    IPC: H04R3/00

    CPC classification number: H04R3/005 ,  H04R1/406 ,  H04R2201/401 ,  H04R2201/403 ,  H04R2201/405 ,  H04R2430/23 ,  H04R2430/25 ,  H04R2499/13

    Abstract: A handsfree communication system includes microphones, a beamformer, and filters. The microphones are spaced apart and are capable of receiving acoustic signals. The beamformer compensates for propagation delays between the direct and reflected acoustic signals. The filters are configured to a predetermined susceptibility level. The filter process the output of the beamformer to enhance the quality of the received signals.

    Abstract translation: 免提通信系统包括麦克风，波束形成器和滤波器。 麦克风间隔开并且能够接收声信号。 波束形成器补偿直接和反射声信号之间的传播延迟。 过滤器被配置为预定的敏感度水平。 滤波器处理波束形成器的输出以增强接收信号的质量。

    Circularly symmetric, zero redundancy, planar array having broad frequency range applications
    144.
    发明授权
    Circularly symmetric, zero redundancy, planar array having broad frequency range applications 失效
    圆对称，零冗余，具有宽频率范围应用的平面阵列

    公开(公告)号：US06205224B1

    公开(公告)日：2001-03-20

    申请号：US08652629

    申请日：1996-05-17

    Applicant: James R. Underbrink

    Inventor： James R. Underbrink

    IPC: H04R300

    CPC classification number: H04R1/403 ,  G10K11/34 ,  H01Q3/26 ,  H01Q21/061 ,  H01Q21/22 ,  H04R2201/401 ,  H04R2201/405 ,  H04R2430/20 ,  Y10S367/905

    Abstract: A class of planar arrays having broad frequency range applications for source location, source imaging or target illumination with projected beams is described in this disclosure. The non-redundant arrays are circularly symmetric and made up of a plurality of sensing and/or transmitting elements arranged so as to substantially eliminate grating lobes for a broad range of frequencies. Signals received from or transmitted to the elements are appropriately phased to control the beam of the array.

    Abstract translation: 在本公开中描述了一类具有用于源位置，源成像或具有投影束的目标照明的宽频率范围应用的平面阵列。 非冗余阵列是圆形对称的，并且由多个感测和/或发射元件组成，其布置成基本上消除宽范围频率的光栅瓣。 从元件接收或传送到元件的信号被适当地定相以控制阵列的光束。

    Multiple driver electroacoustical transducing
    145.
    发明授权
    Multiple driver electroacoustical transducing 失效
    多驱动器电声转换

    公开(公告)号：US5309518A

    公开(公告)日：1994-05-03

    申请号：US961397

    申请日：1992-10-15

    Applicant: Christopher B. Ickler ,  Morten Jorgensen ,  Kenneth D. Jacob ,  Seiji Kawakami

    Inventor： Christopher B. Ickler ,  Morten Jorgensen ,  Kenneth D. Jacob ,  Seiji Kawakami

    IPC: H04R1/28 ,  H04R1/40 ,  H04R3/12 ,  H04R25/00

    CPC classification number: H04R1/2819 ,  H04R1/403 ,  H04R3/12 ,  H04R2201/405

    Abstract: A loudspeaker system has a number of loudspeaker driver assemblies operative over a number of octaves in the audio frequency range. Support structure supports the loudspeaker driver assemblies in fixed substantially contiguous relationship substantially along an arcuate surface with each of the driver assemblies oriented in a prescribed direction and coacting to illuminate with sound a predetermined solid angle centered at the loudspeaker system substantially uniformly over said number of octaves.

    Abstract translation: 扬声器系统具有在音频范围内在多个八度音阶上操作的多个扬声器驱动器组件。 支撑结构支撑扬声器驱动器组件，其基本上沿着弓形表面固定在基本上连续的关系中，其中每个驱动器组件以规定的方向定向并共同作用，以大体上均匀地在所述扬声器系统上以所述数量的八度 。

    Microphone mixing for wind noise reduction
    147.
    发明授权
    Microphone mixing for wind noise reduction 有权

    公开(公告)号：US11671755B2

    公开(公告)日：2023-06-06

    申请号：US16112365

    申请日：2018-08-24

    Applicant: Cirrus Logic International Semiconductor Ltd.

    Inventor： Henry Chen

    IPC: H04R3/00 ,  H04R1/40 ,  H04R5/04

    CPC classification number: H04R3/005 ,  H04R1/406 ,  H04R5/04 ,  H04R2201/405 ,  H04R2410/07 ,  H04R2430/03 ,  H04R2499/11

    Abstract: Wind noise reduction in microphone signals. A first microphone signal is obtained from a first omnidirectional microphone and, contemporaneously, a second microphone signal is obtained from a second omnidirectional microphone. The first and second microphone signals are mixed to produce an output signal. Mixing involves weighting the first and second microphone signals by respective first and second signal weights to produce respective first and second weighted microphone signals, and summing the first and second weighted microphone signals together to produce the output signal. The first and second signal weights are calculated to minimize the power of the output signal.

    Spatial Encoding Directional Microphone Array
    148.
    发明申请
    Spatial Encoding Directional Microphone Array 审中-公开

    公开(公告)号：US20180227665A1

    公开(公告)日：2018-08-09

    申请号：US15571525

    申请日：2017-06-12

    Applicant: MH Acoustics, LLC

    Inventor： Gary W. Elko ,  Tomas F. Gaensler ,  Jens M. Meyer ,  Eric J. Diethorn

    IPC: H04R1/40 ,  H04R3/00

    CPC classification number: H04R1/406 ,  H04R3/005 ,  H04R2201/405 ,  H04R2499/11

    Abstract: In certain embodiments, an article of manufacture, such as a cell phone, has a device body with a non-spheroidal shape, such as a parallelepiped, and microphones configured at different locations on the device body. A signal processing system processes the microphone signals to generate a plurality of different output beampatterns in at least two non-parallel directions, wherein, in generating at least one of the output beampatterns, the signal processing system takes into account effects of the device body on the incoming acoustic signal. Four or more microphones can be used to generate B format output beampatterns, such as three dipole beampatterns and an omnidirectional beampattern.

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