公开(公告)号：US20070050441A1

公开(公告)日：2007-03-01

申请号：US11213629

申请日：2005-08-26

Applicant: Jon Taenzer ,  Bruce Spicer

Inventor： Jon Taenzer ,  Bruce Spicer

IPC: G06F7/38

CPC classification number: H04R3/005 ,  H04R1/406 ,  H04R2201/401 ,  H04R2201/403 ,  H04R2201/405 ,  H04R2430/20 ,  H04R2430/25

Abstract: Noise discrimination in signals from a plurality of sensors is conducted by enhancing the phase difference in the signals such that off-axis pick-up is suppressed while on-axis pick-up is enhanced. Alternatively, attenuation/expansion are applied to the signals in a phase difference dependent manner, consistent with suppression of off-axis pick-up and on-axis enhancement. Nulls between sensitivity lobes are widened, effectively narrowing the sensitivity lobes and improving directionality and noise discrimination.

Abstract translation: 通过增强信号中的相位差来进行来自多个传感器的信号的噪声识别，使得在轴向拾取增强的同时抑制离轴拾取。 或者，衰减/扩展以相位差依赖的方式施加到信号，与离轴拾取和轴上增强的抑制一致。 灵敏度波瓣之间的空值变宽，有效地使灵敏度波瓣变窄，改善方向性和噪声识别。

公开(公告)号：US20060182298A1

公开(公告)日：2006-08-17

申请号：US11401741

申请日：2006-04-11

Applicant: Enrique Stiles ,  Patrick Turnmire ,  Cary Christie ,  Richard Calderwood

Inventor： Enrique Stiles ,  Patrick Turnmire ,  Cary Christie ,  Richard Calderwood

IPC: H04R1/02 ,  H04R9/06

CPC classification number: H04R1/26 ,  H04R1/403 ,  H04R3/04 ,  H04R3/12 ,  H04R3/14 ,  H04R2201/401 ,  H04R2201/403 ,  H04R2201/405 ,  H04R2499/15

Abstract: A soundbar of loudspeakers for use with a television or the like. The soundbar includes two, three, or more Bessel Arrays configured to produce sound for a corresponding number of audio channels. To reduce the transducer count and/or the soundbar width, adjacent channels may share a transducer in their respective Bessel Arrays, and/or one or more of the channels may use a Reduced Bessel Array.

Abstract translation: 与电视机一起使用的扬声器的声杆。 声杆包括两个，三个或更多个贝塞尔阵列，其被配置为产生相应数量的音频通道的声音。 为了减少换能器数量和/或声杆宽度，相邻通道可以在它们各自的贝塞尔阵列中共享换能器，和/或一个或多个通道可以使用还原贝塞尔阵列。

公开(公告)号：US20050225497A1

公开(公告)日：2005-10-13

申请号：US10507753

申请日：2003-03-14

Applicant: Jacob Christensen ,  Jorgen Hald

Inventor： Jacob Christensen ,  Jorgen Hald

IPC: H01Q3/26 ,  H01Q21/06 ,  H01Q21/22 ,  H04R1/32 ,  H04R1/40 ,  H04R3/00 ,  H04R3/12 ,  H01Q21/00

CPC classification number: H04R3/12 ,  H01Q3/26 ,  H01Q21/061 ,  H01Q21/22 ,  H04R1/403 ,  H04R1/406 ,  H04R3/005 ,  H04R2201/401 ,  H04R2201/405 ,  H04R2430/20

Abstract: A two-dimensional array of a plurality of transducers comprising a first plurality of like sub-arrays (11, 11a, 11b) of transducers (10) in a circularly symmetric arrangement around a common centre (C), where the transducers in each sub-array of the first plurality have individual distances from the common centre that form a progressive series of distances with a first lower limit and a first upper limit. Each sub-array in the first plurality of sub-arrays comprises at least three transducers arranged on a first straight line (12), and the first straight line is offset laterally a first distance (d) from the common centre. The number of sub-arrays is odd, and the sub-arrays may be separate units that can be selectively assembled to form the two-dimensional array and selectively disassembled.

Abstract translation: 多个换能器的二维阵列包括围绕公共中心（C）以圆周对称布置的换能器（10）的第一多个相似的子阵列（11,11a，11b），其中换能器 第一多个的每个子阵列具有与公共中心的单独距离，其形成具有第一下限和第一上限的渐进的距离系列。 第一多个子阵列中的每个子阵列包括布置在第一直线（12）上的至少三个换能器，并且第一直线从公共中心横向偏移第一距离（d）。 子阵列的数量是奇数，并且子阵列可以是可以选择性地组装以形成二维阵列并且选择性地拆卸的单独的单元。

公开(公告)号：US20040120533A1

公开(公告)日：2004-06-24

申请号：US10734116

申请日：2003-12-15

Inventor： Stephane Dedieu ,  Philippe Moquin

IPC: H04R003/00

CPC classification number: H04R1/406 ,  H04R2201/405 ,  H04R2430/25

Abstract: A conferencing unit, comprising an array of microphones embedded in a diffracting object configured to provide a desired high frequency directivity response at predetermined microphone positions, and a low frequency beamformer operable to achieve a desired low frequency directivity response, wherein the beamformer is linearly constrained to provide a smooth transition between low and high frequency directivity responses.

Abstract translation: 一种会议单元，包括嵌入在被配置为在预定麦克风位置处提供期望的高频方向性响应的衍射物体中的麦克风阵列，以及可操作以实现期望的低频方向性响应的低频波束形成器，其中波束形成器被线性地约束为 提供低频和高频方向性响应之间的平滑过渡。

公开(公告)号：US5684882A

公开(公告)日：1997-11-04

申请号：US502695

申请日：1995-07-14

Applicant: Yannick Mahieux ,  Gregoire Le Tourneur ,  Alain Saliou

Inventor： Yannick Mahieux ,  Gregoire Le Tourneur ,  Alain Saliou

IPC: H04R1/40 ,  H04R3/00

CPC classification number: H04R1/406 ,  H04R3/005 ,  H04R2201/401 ,  H04R2201/405

Abstract: A system for selective sound capture for hands-free telephony and multimedia workstations of the acoustic antenna type with an aerial formed by a member with a concave cylindrical surface. The system includes a plurality of electro-acoustic transducers which are distributed over and in the vicinity of the cylindrical surface. Circuits for partial summation of a plurality of analog sound signals make it possible to form elementary acoustic antennas and a summation circuit produces a resultant analog signal representative of the sound signal arising from a useful speaking area.

Abstract translation: 用于具有由具有凹形圆柱形表面的构件形成的天线的声学天线类型的免提电话和多媒体工作站的选择性声音捕获的系统。 该系统包括分布在圆柱形表面上方和附近的多个电声换能器。 用于多个模拟声音信号的部分相加的电路使得可以形成基本的声学天线，并且求和电路产生表示由有用的说话区域产生的声音信号的合成的模拟信号。

公开(公告)号：US5657393A

公开(公告)日：1997-08-12

申请号：US99437

申请日：1993-07-30

Applicant: Robert P. Crow

Inventor： Robert P. Crow

IPC: H04R3/00

CPC classification number: H04R3/005 ,  H04R1/406 ,  H04R2201/403 ,  H04R2201/405

Abstract: A sound enhancement system including a beamed linear array microphone system for the acoustic pickup of voice and music from substantial distances with a relatively narrow sound pickup beam and with the avoidance of acoustic feedback. The acceptance beam angle is relatively constant over the desired sound octaves. Response outside of the acceptance beam is relatively low. The system includes a microprocessor-controlled circuit for processing the signals from a multiplicity of microphone elements in the linear array for application to a loudspeaker.

Abstract translation: 一种声音增强系统，包括用于用相对较窄的声音拾取光束从相当远的距离的声学拾音器和用于避免声反馈的声束拾取的束状线性阵列麦克风系统。 接收光束角在所需的声音八度音程上相对恒定。 响应外的接收光束相对较低。 该系统包括微处理器控制的电路，用于处理来自线性阵列中的多个麦克风元件的信号以用于扬声器。

公开(公告)号：US5058170A

公开(公告)日：1991-10-15

申请号：US473398

申请日：1990-02-01

Applicant: Takeo Kanamori ,  Hiroki Furukawa ,  Satoru Ibaraki ,  Michio Matsumoto

Inventor： Takeo Kanamori ,  Hiroki Furukawa ,  Satoru Ibaraki ,  Michio Matsumoto

IPC: G10K11/34 ,  H04R1/40 ,  H04R3/00 ,  H04R3/02

CPC classification number: H04R3/005 ,  G10K11/341 ,  H04R1/406 ,  H04R2201/403 ,  H04R2201/405

Abstract: An array microphone is a directional microphone having an improved directional characteric in which both the sensitivity and the sound pressure frequency response are uniform within the recording area and more particularly, the quality and level of sound remain unchanged. The array microphone includes a microphone array including a plurality of microphone units, and a two-dimensional filter for filtering an output of the microphone array in the dimensions of both time and space. When the two-dimensional filter is a digital filter and varied in its two-dimensional filter coefficient and sampling frequency, the array microphone serves as a variable directional microphone whose directional characteristic can be varied with the sound quality and level remaining unchanged throughout the recording area.

公开(公告)号：US11979734B2

公开(公告)日：2024-05-07

申请号：US17411893

申请日：2021-08-25

Applicant: Apple Inc.

Inventor： Bruce C. Po ,  Richard M. Powell ,  Aram M. Lindahl ,  Baptiste P. Paquier ,  Phillip A. Kamp

IPC: H04S7/00 ,  G06F3/16 ,  H04R1/40 ,  H04R3/04 ,  H04R3/12 ,  H04R5/04 ,  H04R29/00

CPC classification number: H04S7/302 ,  G06F3/162 ,  G06F3/165 ,  H04R1/403 ,  H04R3/04 ,  H04R3/12 ,  H04S7/30 ,  H04R5/04 ,  H04R29/007 ,  H04R2201/025 ,  H04R2201/405 ,  H04S7/301

Abstract: A system and method is described for determining whether a loudspeaker device has relocated, tilted, rotated, or changed environment such that one or more parameters for driving the loudspeaker may be modified and/or a complete reconfiguration of the loudspeaker system may be performed. In one embodiment, the system may include a set of sensors. The sensors provide readings that are analyzed to determine 1) whether the loudspeaker has moved since a previous analysis and/or 2) a distance of movement and/or a degree change in orientation of the loudspeaker since the previous analysis. Upon determining the level of movement is below a threshold value, the system adjusts previous parameters used to drive one or more of the loudspeakers. By adjusting previous parameters instead of performing a complete recalibration, the system provides a more efficient technique for ensuring that the loudspeakers continue to produce accurate sound for the listener.

公开(公告)号：US11832051B2

公开(公告)日：2023-11-28

申请号：US17276271

申请日：2019-09-13

Applicant: Squarehead Technology AS

Inventor： Ines Hafizovic ,  Trond Berg ,  Stig Nyvold

IPC: H04R3/00 ,  H04R1/40

CPC classification number: H04R1/406 ,  H04R3/005 ,  H04R2201/401 ,  H04R2201/405

Abstract: A system for capturing sound comprising a plurality of discrete microphones (112, 14, 116, 118) and a processing system (408). The plurality of discrete microphones are arranged in a circular array. The processing system (408) arranged to perform a first signal processing algorithm on sound originating from one or more of a first set of directions relative to the array to isolate a first sound source. The processing system (408) is further arranged to perform a second signal processing algorithm on sound originating from one or more of a second set of directions relative to the array to isolate a second sound source therein. A method for receiving sound at a plurality of discrete microphones (112, 114, 116, 118) arranged in a circular array is also described.

公开(公告)号：US11801579B2

公开(公告)日：2023-10-31

申请号：US17416324

申请日：2019-12-23

Applicant: UNIVERSITÉ DU LUXEMBOURG

Inventor： Edoardo Coperataro

IPC: B23Q17/00 ,  B23Q17/09 ,  B05B15/18 ,  B05B7/14 ,  B24C1/04 ,  B24C5/04 ,  H04R1/40 ,  H04R29/00

CPC classification number: B23Q17/0971 ,  B05B7/1431 ,  B05B15/18 ,  B23Q17/098 ,  B24C1/045 ,  B24C5/04 ,  H04R1/406 ,  H04R29/005 ,  H04R2201/401 ,  H04R2201/405

Abstract: The invention provides a machining system (201) comprising: a machining apparatus (202), notably an abrasive waterjet cutting system (203), said machining apparatus being adapted for machining a workpiece (204); a monitoring device (228) adapted for monitoring machining conditions of the machining apparatus (202) and/or of the workpiece, the monitoring device comprising a plurality of sensors, said plurality of sensors comprising a first sensor (237) at a first location and a second sensor (239) at a second location which is distant from the first location. The plurality of sensors comprises a fourth sensor (243) which is formed by an array of microphones (254) arranged on a grid. The plurality of sensors comprises accelerometers, strain gauges and microphones. The invention also provides a monitoring method of a machining system (201) wherein a specific benchmark signature is chosen from a library.