公开(公告)号：US20150110288A1

公开(公告)日：2015-04-23

申请号：US14520509

申请日：2014-10-22

Applicant: MH Acoustics, LLC

Inventor： Jens M. Meyer ,  Gary W. Elko

IPC: H04R3/00

CPC classification number: H04R3/005 ,  H04R1/406 ,  H04R2201/401 ,  H04R2201/405 ,  H04R2410/01 ,  H04R2430/20

Abstract: In one embodiment, an audio system has a microphone array and a signal processing subsystem that processes audio signals generated by the microphone array to produce an output beampattern. The microphone array has (i) a first microphone set of two or more microphones located on a first ellipse, (ii) a second microphone set of two or more microphones located on a second ellipse within the first ellipse, and (iii) a third microphone set of one or more microphones located within the second ellipse, where the microphones in the first, second, and third microphone sets are effectively all in one plane. The signal processing subsystem has (1) a decomposer that spatially decomposes the microphone audio signals to generate a plurality of eigenbeams and (2) a beamformer that generates the output beampattern as a weighted sum of the eigenbeams.

Abstract translation: 在一个实施例中，音频系统具有麦克风阵列和处理由麦克风阵列产生的音频信号以产生输出波形图的信号处理子系统。 所述麦克风阵列具有（i）位于第一椭圆上的两个或多个麦克风的第一麦克风组，（ii）位于所述第一椭圆内的第二椭圆上的两个或多个麦克风的第二麦克风组，以及（iii）第三麦克风 位于第二椭圆内的一个或多个麦克风的麦克风集合，其中第一，第二和第三麦克风组中的麦克风实际上全部在一个平面中。 信号处理子系统具有（1）分解器，其空间分解麦克风音频信号以产生多个本征波束;以及（2）波束形成器，其生成作为本征波束的加权和的输出波形图。

公开(公告)号：US08903106B2

公开(公告)日：2014-12-02

申请号：US12595082

申请日：2008-07-09

Applicant: Jens M. Meyer ,  Gary W. Elko

Inventor： Jens M. Meyer ,  Gary W. Elko

IPC: H04R3/00 ,  H04R1/40

CPC classification number: H04R3/005 ,  H04R1/406 ,  H04R2201/401 ,  H04R2201/405 ,  H04R2410/01 ,  H04R2430/20

Abstract: In one embodiment, an audio system has a microphone array and a signal processing subsystem that processes audio signals generated by the microphone array to produce an output beampattern. The microphone array has (i) a plurality microphones arranged in a circular portion and (ii) a center microphone. The signal processing subsystem has (1) a decomposer that spatially decomposes the microphone audio signals to generate a plurality of eigenbeams and (2) a beamformer that generates the output beampattern as a weighted sum of the eigenbeams. By adding the center microphone, the audio system is able to provide some degree of control over the beamforming in the vertical direction as well as provide reduction of modal aliasin.

Abstract translation: 在一个实施例中，音频系统具有麦克风阵列和处理由麦克风阵列产生的音频信号以产生输出波形图的信号处理子系统。 麦克风阵列具有（i）布置在圆形部分中的多个麦克风和（ii）中心麦克风。 信号处理子系统具有（1）分解器，其空间分解麦克风音频信号以产生多个本征波束;以及（2）波束形成器，其生成作为本征波束的加权和的输出波形图。 通过添加中心麦克风，音频系统能够在垂直方向上提供对波束成形的一定程度的控制，并且可以减少模态别名。

公开(公告)号：US20130236031A1

公开(公告)日：2013-09-12

申请号：US13820347

申请日：2011-09-01

Applicant: Pär Gunnars Risberg

Inventor： Pär Gunnars Risberg

IPC: H04R1/24

CPC classification number: H04R1/24 ,  H04R1/26 ,  H04R1/403 ,  H04R2201/028 ,  H04R2201/401 ,  H04R2201/405 ,  H04R2205/022

Abstract: A speaker system (1, 1′, 1″) comprises a first speaker driver group (G1), comprising at least one first speaker driver (S1) and a first amplifier (A1), and a second speaker driver group (G2), comprising at least one second speaker driver (S2) and a second amplifier (A2). The speaker system further comprises a digital signal processor (2), adapted to provide a first signal to the first speaker driver group (G1) and a second signal to the second signal group (G2), wherein the first and second signals differ with respect to frequency range and at least one of the speaker driver groups comprises at least 4, 6, 8 or 10 speaker drivers.

Abstract translation: 扬声器系统（1,1'，1“）包括第一扬声器驱动器组（G1），其包括至少一个第一扬声器驱动器（S1）和第一放大器（A1），以及第二扬声器驱动器组（G2） ，包括至少一个第二扬声器驱动器（S2）和第二放大器（A2）。 扬声器系统还包括数字信号处理器（2），适于向第一扬声器驱动器组（G1）提供第一信号和向第二信号组（G2）提供第二信号，其中第一和第二信号相对于 至少一个扬声器驱动器组包括至少4,6,8或10个扬声器驱动器。

公开(公告)号：US20130142349A1

公开(公告)日：2013-06-06

申请号：US13814559

申请日：2012-04-10

Applicant: Song Liu ,  Bo Li

Inventor： Song Liu ,  Bo Li

IPC: G10K11/00

CPC classification number: G10K11/002 ,  G10L21/0208 ,  G10L2021/02166 ,  H04R3/005 ,  H04R2201/403 ,  H04R2201/405

Abstract: To solve the problems with the prior art that a multi-microphone array cannot inhibit broad-band noises well and cannot be used in the increasingly widespread broad-band communication, embodiments of the present invention disclose a method, a device and a system for eliminating noises with multi-microphone array. The method according to an embodiment of the present invention comprises according to the number of different spacings between each of pairs of microphones of the multi-microphone array, dividing a full frequency band into the same number of sub-bands; decomposing signals of each of the pairs of microphones with the different spacings into a corresponding one of the sub-bands, wherein the larger the spacing between each pair of microphones is, the lower the frequencies of the sub-band into which the signals of the pair of microphones are decomposed will be; adaptively reducing the noises in the decomposed signals of each of the pairs of microphones with the different spacings in the corresponding sub-band to obtain noise-reduced signals for each of the sub-bands; and synthesizing the noise-reduced signals of each of the sub-bands to obtain a signal in which the noises have been reduced with the multi-microphone array in the full frequency band. The embodiments of the present invention can be used in scenarios of hands-free video calls.

Abstract translation: 为了解决现有技术的问题，多麦克风阵列不能很好地抑制宽带噪声，并且不能用于越来越广泛的宽带通信中，本发明的实施例公开了一种方法，装置和用于消除 多麦克风阵列噪音。 根据本发明的实施例的方法包括根据多麦克风阵列的每对麦克风之间的不同间隔的数量，将全频带划分成相同数量的子带; 将具有不同间隔的每对麦克风的每个麦克风的信号分解为相应的一个子带，其中每对麦克风之间的间隔越大，子带的频率越低， 一对麦克风会被分解; 以相应子带中的不同间隔自适应地减少每对麦克风的分解信号中的噪声，以获得每个子带的噪声降低信号; 并且合成每个子频带的噪声降低信号，以获得在全频带中的多麦克风阵列已经降低了噪声的信号。 本发明的实施例可以用于免提视频通话的场景中。

公开(公告)号：US20130101144A1

公开(公告)日：2013-04-25

申请号：US13808342

申请日：2011-06-24

Applicant: Hisao Hattori ,  Junsei Sato ,  Chanbin Ni

Inventor： Hisao Hattori ,  Junsei Sato ,  Chanbin Ni

IPC: H04R3/12

CPC classification number: H04R3/12 ,  H04R1/24 ,  H04R1/403 ,  H04R2201/403 ,  H04R2201/405 ,  H04R2430/01 ,  H04S2400/11 ,  H04S2400/13 ,  H04S2400/15 ,  H04S2420/13

Abstract: Positive and negative two terminals of each of a plurality of main speakers constituting an array speaker are connected to each of amplifiers. Then, the main speakers are bridge-driven. Sub-speakers interpolating the main speakers are arranged respectively between the main speakers. Then, the positive and negative terminals of each of the sub-speakers are connected respectively to the terminals of the same polarities of the adjacent two of the main speakers. One sub-speaker receives an average value of the signals provided to the adjacent two main speakers, so that the one sub-speaker interpolates the wavefronts emitted from the adjacent two main speakers.

Abstract translation: 构成阵列扬声器的多个主扬声器中的每一个的正和负两个端子连接到每个放大器。 然后，主扬声器是桥式驱动的。 插入主扬声器的子扬声器分别布置在主扬声器之间。 然后，每个副扬声器的正极和负极分别连接到相邻两个主扬声器的相同极性的端子。 一个副扬声器接收提供给相邻的两个主扬声器的信号的平均值，使得一个子扬声器内插从相邻的两个主扬声器发射的波前。

公开(公告)号：US08259959B2

公开(公告)日：2012-09-04

申请号：US12637444

申请日：2009-12-14

Applicant: Trygve Frederik Marton ,  Lennart Burenius

Inventor： Trygve Frederik Marton ,  Lennart Burenius

IPC: H04R3/00

CPC classification number: H04R3/005 ,  H04N7/142 ,  H04R2201/405

Abstract: A video teleconferencing directional microphone includes two microphone elements arranged coincidentally on a vertical axis. The two microphone elements are placed on a supporting surface so that a first microphone element is on the surface, and the second microphone elements are elevated above the supporting surface. The directional microphone also includes filters, an adder assembly, and an equalizer, which are used to shape the directivity pattern of the directional microphone into a toroid sensitivity pattern. The toroid sensitivity pattern increases sensitivity in the direction of a sound source of interest, while simultaneously reduces sensitivity to any sound waves generated by noise sources from certain elevation angles.

Abstract translation: 视频电话会议定向麦克风包括在垂直轴上巧合布置的两个麦克风元件。 两个麦克风元件被放置在支撑表面上，使得第一麦克风元件在表面上，并且第二麦克风元件在支撑表面上方升高。 定向麦克风还包括滤波器，加法器组件和均衡器，其用于将定向麦克风的方向性图案成形为环形灵敏度图案。 环形灵敏度图案增加了感兴趣的声源方向的灵敏度，同时降低了由某些仰角产生的噪声源产生的声波的灵敏度。

公开(公告)号：US08170220B2

公开(公告)日：2012-05-01

申请号：US11859129

申请日：2007-09-21

Applicant: Hiroyuki Mori

Inventor： Hiroyuki Mori

IPC: H04R5/00 ,  H04R3/00

CPC classification number: H04R1/406 ,  H04R1/04 ,  H04R3/005 ,  H04R5/027 ,  H04R2201/401 ,  H04R2201/405 ,  H04R2430/23

Abstract: Provided is an image sensing apparatus in which directivity can be changed in accordance with the position of the shooter. The image sensing apparatus includes a video shooting unit, at least four microphones placed around the video shooting unit, and an audio signal processing unit adapted to synthesize audio signals from two microphones among the at least four microphones, thereby outputting a synthesized audio signal from a specific direction of the video shooting unit. The apparatus further includes a selecting unit adapted to select the position of a shooter. The audio signal processing unit includes a directivity changeover unit adapted to change over directivity by changing a combination of the two microphones in accordance with a selection output signal the said selecting unit.

Abstract translation: 提供了可以根据射击者的位置来改变方向性的图像感测装置。 图像感测装置包括视频拍摄单元，放置在视频拍摄单元周围的至少四个麦克风，以及音频信号处理单元，其适于在至少四个麦克风中合成来自两个麦克风的音频信号，从而从 视频拍摄单元的具体方向。 该装置还包括适于选择射手的位置的选择单元。 该音频信号处理单元包括一个方向转换单元，用于根据所述选择单元的选择输出信号改变两个麦克风的组合来改变方向性。

公开(公告)号：US08144886B2

公开(公告)日：2012-03-27

申请号：US12162934

申请日：2007-01-17

Applicant: Toshiaki Ishibashi

Inventor： Toshiaki Ishibashi

IPC: H04R3/00

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。

公开(公告)号：US08126180B2

公开(公告)日：2012-02-28

申请号：US12262473

申请日：2008-10-31

Applicant: Kenneth D. Jacob ,  Craig R. Jackson ,  Joseph J. Kutil ,  Peter C. Santoro ,  Stuart Raymond Jang ,  Michael A. Shramko ,  John W. Mazejka ,  Robert A. Warden

Inventor： Kenneth D. Jacob ,  Craig R. Jackson ,  Joseph J. Kutil ,  Peter C. Santoro ,  Stuart Raymond Jang ,  Michael A. Shramko ,  John W. Mazejka ,  Robert A. Warden

IPC: H04R9/06

CPC classification number: H04R1/26 ,  H04R1/02 ,  H04R2201/028 ,  H04R2201/405 ,  H04R2205/021

Abstract: A compact and portable loudspeaker system operable in two configurations includes a driver array and a base unit having a bass enclosure and a dock. In an extended configuration, the driver array is supported by one or more extension legs between three to eight feet above the base unit where one of the extension legs is held by the dock. The base unit may be placed on a floor of a small to medium venue with the mid-to-high range driver array elevated near or above the elevation of an audience in the venue. In a compact configuration, the driver array is directly supported by the dock and the base unit and driver array may be placed on a table or desk in a classroom, conference room, or other such small to medium venue. The portable loudspeaker system may be transported in the compact configuration.

Abstract translation: 以两种配置可操作的紧凑便携式扬声器系统包括驱动器阵列和具有低音罩和基座的基座单元。 在扩展配置中，驱动器阵列由位于基座单元上方的三到八英尺之间的一个或多个延伸腿支撑，其中一个延伸腿由码头保持。 基地单位可以放置在中小型场地的地板上，中高档驾驶员阵列升高到场地观众高度的近或更高。 在紧凑的配置中，驱动器阵列由码头直接支持，并且基座单元和驱动器阵列可以被放置在教室，会议室或其他这样的小到中等场所的桌子或桌子上。 便携式扬声器系统可以以紧凑的配置传送。

公开(公告)号：US20120020480A1

公开(公告)日：2012-01-26

申请号：US13190464

申请日：2011-07-25

Applicant: ERIK VISSER ,  Pei Xiang

Inventor： ERIK VISSER ,  Pei Xiang

IPC: H04R5/00

CPC classification number: H04R3/12 ,  H04R2201/405 ,  H04R2430/20 ,  H04R2499/11 ,  H04S7/303

Abstract: Methods, systems, and apparatus for using a psychoacoustic-bass-enhanced signal to drive an array of loudspeakers are disclosed.

Abstract translation: 公开了使用心理声学低音增强信号来驱动扬声器阵列的方法，系统和装置。