公开(公告)号：US07400736B2

公开(公告)日：2008-07-15

申请号：US10734116

申请日：2003-12-15

Applicant: Stephane Dedieu ,  Philippe Moquin

Inventor： Stephane Dedieu ,  Philippe Moquin

IPC: H04R25/00

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：US20080056517A1

公开(公告)日：2008-03-06

申请号：US11845607

申请日：2007-08-27

Applicant: V. Algazi ,  Richard Duda ,  Dennis Thompson

Inventor： V. Algazi ,  Richard Duda ,  Dennis Thompson

IPC: H04S1/00

CPC classification number: H04S7/304 ,  H04R5/027 ,  H04R2201/401 ,  H04R2201/405 ,  H04R2420/07 ,  H04S2400/01 ,  H04S2400/15

Abstract: A new approach to tracking head motion for headphone-based sound is described. Called MTB2.0 for “Motion-Tracked Binaural with 2 Channels”, the method may be used for any 2-channel binaural signals without any increase in the bandwidth requirement. MTB2.0 provides a simple and effective means to improve the quality of headphone-based sound reproduction by sensing the orientation of the listener's head and using the sensed orientation to appropriately modify the signals sent to the two ears. MTB2.0 method increases the realism and removes some of the shortcomings of binaural sound capture and recording, as well as improves the quality of binaural rendering of stereo.

Abstract translation: 描述了基于耳机的声音跟踪头部运动的新方法。 称为MTB2.0“运动跟踪双耳双通道”，该方法可用于任何2通道双耳信号，而不增加带宽要求。 MTB2.0提供了一种简单而有效的手段，通过感应听者头部的方位和使用感测方向来适当地修改发送到两只耳朵的信号来提高基于耳机的声音再现质量。 MTB2.0方法增加了现实主义，消除了双耳声音捕获和记录的一些缺点，并提高了立体声的双耳渲染质量。

公开(公告)号：US20070092095A1

公开(公告)日：2007-04-26

申请号：US11246468

申请日：2005-10-06

Applicant: Clifford Henricksen ,  Christopher Ickler ,  Kenneth Jacob ,  Morten Jorgensen ,  Joseph Kutil ,  Hilmar Lehnert ,  Peter Santoro

Inventor： Clifford Henricksen ,  Christopher Ickler ,  Kenneth Jacob ,  Morten Jorgensen ,  Joseph Kutil ,  Hilmar Lehnert ,  Peter Santoro

IPC: H04R1/02 ,  H04R9/06 ,  H04R25/00

CPC classification number: H04R1/403 ,  H04R2201/405

Abstract: A line array loudspeaker, including a first plurality of acoustic drivers each acoustic driver comprising an axis, the first plurality of acoustic drivers arranged so that the axes of first plurality of acoustic drivers are coplanar in a first plane and so that a straight line intersects each axis at a same position on each of the first plurality of acoustic drivers, and a second plurality of acoustic drivers each acoustic driver comprising an axis, the second plurality of acoustic drivers arranged so that the axes of second plurality of acoustic drivers are coplanar in a second plane and so that the straight line intersects each axis at a same position on each of the second plurality of acoustic drivers, in which the first plurality and the second plurality arranged so that the first plane intersects with the second plane along a straight intersection line.

Abstract translation: 一种线阵列扬声器，包括第一多个声学驱动器，每个声学驱动器包括轴，所述第一多个声学驱动器被布置成使得第一多个声学驱动器的轴在第一平面中共面并且使得直线与每个 在第一多个声学驱动器中的每一个上的相同位置处的轴线以及包括轴的每个声学驱动器的第二多个声学驱动器，所述第二多个声学驱动器被布置成使得第二多个声学驱动器的轴线共面于 并且使得所述直线在每个所述第二多个声学驱动器中的每个所述第二多个声学驱动器中的相同位置处与每个轴相交，其中所述第一多个和第二多个声学驱动器布置成使得所述第一平面沿着直线交叉线与所述第二平面相交 。

公开(公告)号：US20060269074A1

公开(公告)日：2006-11-30

申请号：US11405667

申请日：2006-04-14

Applicant: William Oxford

Inventor： William Oxford

IPC: H04R29/00

CPC classification number: H04M1/6008 ,  H04M1/6033 ,  H04R1/403 ,  H04R1/406 ,  H04R3/005 ,  H04R3/02 ,  H04R27/00 ,  H04R29/007 ,  H04R2201/401 ,  H04R2201/403 ,  H04R2201/405 ,  H04R2203/12 ,  H04R2225/41 ,  H04R2227/003 ,  H04R2420/07 ,  H04R2430/20 ,  H04R2430/21 ,  H04R2430/23 ,  H04R2499/11

Abstract: A system such as a speakerphone may include a processor, memory, a speaker and a microphone. The processor may be configured (via program instructions stored in the memory) to calibrate the speaker by: outputting a stimulus signal; receiving an input signal corresponding to the stimulus signal; computing a midrange sensitivity and a lowpass sensitivity for a transfer function derived from a spectrum of the input signal and a spectrum of the output signal; subtracting the midrange sensitivity from the lowpass sensitivity to obtain a speaker-related sensitivity; performing an iterative search for current parameters of a speaker model using the input signal spectrum, the stimulus signal spectrum and the speaker-related sensitivity; and updating averages of the speaker model parameters using the current parameter values. The stimulus signal may be transmitted during periods of silence in the external environment. The parameter averages may be used to perform echo cancellation.

Abstract translation: 诸如免提电话的系统可以包括处理器，存储器，扬声器和麦克风。 可以通过以下方式配置处理器（通过存储在存储器中的程序指令）来校准扬声器：输出刺激信号; 接收对应于所述刺激信号的输入信号; 计算从输入信号的频谱和输出信号的频谱导出的传递函数的中频灵敏度和低通灵敏度; 从低通灵敏度减去中频灵敏度，以获得与扬声器相关的灵敏度; 使用输入信号频谱，刺激信号频谱和与扬声器有关的灵敏度来对扬声器模型的当前参数进行迭代搜索; 并使用当前参数值更新说话者模型参数的平均值。 刺激信号可以在外部环境中的静音期间传输。 参数平均值可用于执行回声消除。

公开(公告)号：US20050201582A1

公开(公告)日：2005-09-15

申请号：US10796199

申请日：2004-03-10

Applicant: Charles Hughes ,  Kirk Lombardo

Inventor： Charles Hughes ,  Kirk Lombardo

IPC: H04R1/02 ,  H04R9/06

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

Abstract: The loudspeaker has a first pair of drivers arranged in a line, a center point along the line, wherein the pair of drivers are substantially centered about the center point with a center to center distance, d0, between the drivers in the first pair of drivers, whereby the maximum frequency with out high amplitude side lobes is equal to c/2d0, and at least a subsequent pair of drivers arranged in the line array with the first pair of drivers and substantially centered about the center point, wherein the subsequent pair of drivers are spaced such that the center to center distance between each driver in the subsequent pair, dn, is equal to 4nd0, where n=0 at the innermost pair of drivers and n increases by 1 with each pair of drivers sequentially added. Each pair of drivers for n>0 has a first order low pass filter with a frequency equal to 2c/dn.

Abstract translation: 扬声器具有沿着线路排列的第一对驱动器，沿着线的中心点，其中所述一对驱动器基本上围绕中心点居中，其中心到中心距离d 0 第一对驱动器中的驱动器，其中具有高振幅旁瓣的最大频率等于c / 2d <0>，并且至少一组随后的一对驱动器布置在线阵列中，具有第一 一对驱动器并且基本上围绕中心点居中，其中随后的一对驱动器间隔开，使得后续对中的每个驱动器之间的中心到中心距离等于第4个 _{0 ，其中在最内侧的驱动器对上n = 0，并且每对驱动器依次添加，n增加1。 n> 0的每对驱动器具有频率等于2c / d 的一阶低通滤波器。}

公开(公告)号：US20050063558A1

公开(公告)日：2005-03-24

申请号：US10499915

申请日：2002-06-21

Applicant: Joachim Neumann ,  Soren Laugesen

Inventor： Joachim Neumann ,  Soren Laugesen

IPC: G10L21/0208 ,  G10L21/0216 ,  H04R3/00 ,  H04R25/00

CPC classification number: G10L21/0208 ,  G10L2021/02166 ,  H04R25/407 ,  H04R2201/403 ,  H04R2201/405

Abstract: Method of noise reduction in a hearing aid or a listening device to be used by a hearing impaired person in which the noise reduction is provided primarily in the frequency range wherein the hearing impaired has the smallest hearing loss or the best hearing.

Abstract translation: 助听器或听力装置中的降噪的方法主要在听力障碍者具有最小的听力损失或最佳听力的频率范围内由听力受损的人使用，其中降低噪音。

公开(公告)号：US06868043B1

公开(公告)日：2005-03-15

申请号：US10370248

申请日：2003-02-20

Applicant: Evan Frank Berkman

Inventor： Evan Frank Berkman

IPC: H01Q3/26 ,  H01Q21/22 ,  H04R1/40 ,  G01S3/80

CPC classification number: H01Q21/22 ,  H01Q3/26 ,  H04R1/403 ,  H04R2201/403 ,  H04R2201/405 ,  H04R2430/20

Abstract: A system and method to provide maximum power over large angular sectors using an array of transducers is disclosed. Array segments of transducers and phase shifters form a beam from each of the array segments, wherein the set of beams overlap to form a large sector coverage beam. The phase of each of the signals fed to the radiating elements is shifted, such that the difference between beam point directions of the beams of two adjacent array segments is substantially equal to one half of the sum of the beamwidths of the beams of the two adjacent array segments. The phase of each of the signals fed to the radiating elements may also be shifted in proportion to the square of the distance between one end of the array of transducers and the position of each of the plurality of radiating elements.

Abstract translation: 公开了一种使用换能器阵列在大角度扇区上提供最大功率的系统和方法。 换能器和移相器的阵列段形成来自每个阵列段的波束，其中该组波束重叠以形成大的扇区覆盖波束。 馈送到辐射元件的每个信号的相位被移动，使得两个相邻阵列段的波束的波束点方向之间的差异基本上等于两个相邻波束的波束的波束宽度之和的一半 数组段 馈送到辐射元件的每个信号的相位也可以与换能器阵列的一端和多个辐射元件中的每一个的位置之间的距离的平方成比例地移位。

公开(公告)号：US20040175006A1

公开(公告)日：2004-09-09

申请号：US10793270

申请日：2004-03-05

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jaywoo Kim ,  Dong-geon Kong ,  Chang-kyu Choi

IPC: H04R003/00

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

Abstract: A microphone array, beam forming method and apparatus using the microphone array, and a method and apparatus for estimating an acoustic source direction using the microphone array are provided. The apparatus for forming constant directivity beams comprising: a microphone array, which is comprised of first through n-th microphone sub-arrays, wherein each of the microphone sub-arrays comprises: a first microphone placed at a predetermined location on a flat plate, which commonly belongs to each of the microphone sub-arrays; and second and third microphones placed at locations perpendicularly spaced by a predetermined segment from a straight line connecting the first microphone and the center of the flat plate, the predetermined segment being determined depending on a target frequency allotted to reach of the microphone sub-arrays, a beam formation unit receiving voice signals output from the first through n-th microphone sub-arrays and generating a beam for each of the first through n-th microphone sub-arrays; a filtering unit filtering the beams output from the beam formation unit; and an adding unit adding the filtered signals output from the filtering unit.

Abstract translation: 麦克风阵列，波束形成方法和使用麦克风阵列的装置，以及用于使用麦克风阵列来估计声源方向的方法和装置。 用于形成恒定方向性光束的装置包括：由第一至第n麦克风子阵列组成的麦克风阵列，其中每个麦克风子阵列包括：放置在平板上的预定位置的第一麦克风， 其通常属于每个麦克风子阵列; 以及第二和第三麦克风放置在与连接第一麦克风和平板的中心的直线与预定片段垂直间隔的位置处，该预定片段根据分配给麦克风子阵列的目标频率来确定， 波束形成单元接收从第一至第N麦克风子阵列输出的声音信号，并为第一至第N麦克风子阵列中的每一个生成波束; 滤波单元，滤波从光束形成单元输出的光束; 以及添加单元，将从滤波单元输出的滤波信号相加。

公开(公告)号：US6128395A

公开(公告)日：2000-10-03

申请号：US836997

申请日：1997-05-07

Applicant: Gerard Hendrik Joseph De Vries

Inventor： Gerard Hendrik Joseph De Vries

IPC: H04R1/40 ,  H04R3/12 ,  H04S1/00 ,  H04S5/02 ,  H04S7/00 ,  H04R25/00

CPC classification number: H04R1/403 ,  H04R2201/401 ,  H04R2201/405 ,  H04R2430/20

Abstract: Loudspeaker system having various loudspeakers (SP.sub.i, i=0, 1, 2, . . . , m) which are arranged in accordance with a predetermined pattern and have associated filters (F.sub.i, i=0, 1, 2, . . . , m), which filters all receive an audio signal (AS) and are equipped to transmit output signals to the respective loudspeakers (SP.sub.i) such that they, during operation, generate a sound pattern of a predetermined form, wherein the loudspeakers (SP.sub.i) have a mutual spacing (l.sub.i), which, insofar as physically possible, substantially corresponds to a logarithmic distribution, wherein the minimum spacing is determined by the physical dimensions of the loudspeakers used.

Abstract translation: PCT No.PCT / NL95 / 00384 Sec。 371日期1997年5月7日 102（e）日期1997年5月7日PCT提交1995年11月8日PCT公布。 第WO96 / 14723号公报 日期1996年5月17日具有各种扬声器（SPi，i = 0,1,2，...，m）的扬声器系统，其按照预定模式排列并具有相关联的滤波器（Fi，i = 0,1,2， ...，m），其滤波器全部接收音频信号（AS）并且被配备为将输出信号发送到相应的扬声器（SPi），使得它们在操作期间产生预定形式的声音模式，其中扬声器 （SPi）具有相互间隔（li），其在物理上可能基本上对应于对数分布，其中最小间隔由所使用的扬声器的物理尺寸确定。

公开(公告)号：US5778082A

公开(公告)日：1998-07-07

申请号：US663670

申请日：1996-06-14

Applicant: Peter L. Chu ,  Hong Wang

Inventor： Peter L. Chu ,  Hong Wang

IPC: H04N7/15 ,  H04R1/40 ,  H04R3/00 ,  H04S1/00

CPC classification number: H04S1/007 ,  H04N7/15 ,  H04R3/005 ,  H04R2201/401 ,  H04R2201/403 ,  H04R2201/405

Abstract: An acoustic signal processing method and system using a pair of spatially separated microphones to obtain the direction or location of speech or other acoustic signals from a common sound source is disclosed. The invention includes a method and apparatus for processing the acoustic signals by determining whether signals acquired during a particular time frame represent the onset or beginning of a sequence of acoustic signals from the sound source, identifying acoustic received signals representative of the sequence of signals, and determining the direction of the source based upon the acoustic received signals. The invention has applications to videoconferencing where it may be desirable to automatically adjust a video camera, such as by aiming the camera in the direction of a person who has begun to speak.

Abstract translation: 公开了一种使用一对空间分离的麦克风从公共声源获得语音或其他声学信号的方向或位置的声学信号处理方法和系统。 本发明包括一种用于通过确定在特定时间帧期间获取的信号是否表示来自声源的声学信号的序列的开始或开始来识别声学信号的方法和装置，识别表示信号序列的声学接收信号，以及 基于声接收信号来确定源的方向。 本发明适用于视频会议，其中可能需要自动调整摄像机，例如通过将相机瞄准已经开始说话的人的方向。