公开(公告)号：US20110235822A1

公开(公告)日：2011-09-29

申请号：US13069063

申请日：2011-03-22

Applicant: Jae-Hoon JEONG ,  Kyu-Hong Kim ,  So-Young Jeong ,  Kwang-Cheol Oh

Inventor： Jae-Hoon JEONG ,  Kyu-Hong Kim ,  So-Young Jeong ,  Kwang-Cheol Oh

IPC: H04R3/00

CPC classification number: H04R3/005 ,  G10L2021/02166 ,  H04R2201/405 ,  H04R2410/01

Abstract: An apparatus and method for removing noise are provided. The apparatus includes an acoustic signal input unit configured to comprise three or more microphones including a first microphone as a reference microphone, a second microphone disposed at a position asymmetrical to the first microphone, and a third microphone disposed at a position symmetrical to the first microphone, and an acoustic signal processing unit configured to remove rear noise using acoustic signals received from the first microphone, the second microphone, and the third microphone.

Abstract translation: 提供了一种用于消除噪声的装置和方法。 该装置包括：声信号输入单元，被配置为包括三个或更多个麦克风，其包括作为参考麦克风的第一麦克风，设置在与第一麦克风不对称的位置处的第二麦克风，以及设置在与第一麦克风对称的位置处的第三麦克风 以及声信号处理单元，被配置为使用从第一麦克风，第二麦克风和第三麦克风接收的声信号来去除后噪声。

公开(公告)号：US07936891B2

公开(公告)日：2011-05-03

申请号：US11246468

申请日：2005-10-06

Applicant: Clifford A. Henricksen ,  Christopher B. Ickler ,  Kenneth Dylan Jacob ,  Morten Jorgensen ,  Joseph J. Kutil, III ,  Hilmar Lehnert ,  Peter C. Santoro

Inventor： Clifford A. Henricksen ,  Christopher B. Ickler ,  Kenneth Dylan Jacob ,  Morten Jorgensen ,  Joseph J. Kutil, III ,  Hilmar Lehnert ,  Peter C. Santoro

IPC: H04R9/06

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：US07889873B2

公开(公告)日：2011-02-15

申请号：US10587657

申请日：2005-01-27

Applicant: Ole Moller Sorensen

Inventor： Ole Moller Sorensen

IPC: H04R3/00

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

Abstract: Microphone array for achieving a substantially frequency-independent directivity using a plurality of microphones disposed along a rectilinear array. The rectilinear array is at least as long as the wavelength of the lowest frequency, where a useful directivity is desired. The rectilinear array has a first end and a second end. The microphones close to the first end are intended for the highest frequencies and the microphones close to the second end are intended for the lowest frequencies. The mutual spacing of the microphones is frequency-dependent. The signals from the individual microphones are band-pass filtered, the passbands and cut-off frequencies of the individual band-pass filters being adapted to the frequency band the individual microphones are intended for. The individual band-pass filters are adapted such that the amplitude of the summated signal after band-pass filtering is substantially the same when a sinus-shaped test signal is used, the amplitude of said test signal being constant and the frequency of said test signal varying within the frequency range where the microphone array is to have a substantially frequency-independent directivity.

Abstract translation: 用于使用沿着直线阵列布置的多个麦克风实现基本上频率独立的方向性的麦克风阵列。 直线阵列至少与最低频率的波长一样长，其中期望有用的方向性。 直线阵列具有第一端和第二端。 靠近第一端的麦克风是用于最高频率的，靠近第二端的麦克风用于最低频率。 麦克风的相互间隔是频率依赖的。 来自各个麦克风的信号被带通滤波，各个带通滤波器的通带和截止频率适合于各个麦克风所预期的频带。 单独的带通滤波器适于使得当使用窦状测试信号时，带通滤波后的求和信号的振幅基本相同，所述测试信号的幅度恒定，并且所述测试信号的频率 在麦克风阵列将具有基本上与频率无关的方向性的频率范围内变化。

公开(公告)号：US07826623B2

公开(公告)日：2010-11-02

申请号：US10563072

申请日：2004-06-30

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: The invention is directed to a handsfree system for use in a vehicle comprising a microphone array with at least two microphones and a signal processing means wherein the signal processing means comprises the superdirective beamformer with fixed superdirective filters.

Abstract translation: 本发明涉及一种用于车辆的免提系统，其包括具有至少两个麦克风的麦克风阵列和信号处理装置，其中所述信号处理装置包括具有固定超向量滤波器的超向波束形成器。

公开(公告)号：US20100166215A1

公开(公告)日：2010-07-01

申请号：US12527195

申请日：2008-02-18

Applicant: David Herman

Inventor： David Herman

IPC: H04B15/00

CPC classification number: H04R1/086 ,  H04R1/406 ,  H04R3/005 ,  H04R25/405 ,  H04R25/407 ,  H04R2201/401 ,  H04R2201/405 ,  H04R2410/07

Abstract: An apparatus for reduction of wind noise comprised of an electro-acoustic transducer arrangement with at least two and preferably a minimum of three omni-directional transducer elements. The exposed structure is covered with at least one thin layer of wind-resistive material. The electrical outputs of the elements are added together to provide an output signal with increased signal to wind noise ratio. The signal may subject to additional signal processing such as filtering and/or level sensitive signal inhibition.

Abstract translation: 一种用于降低风噪声的装置，包括具有至少两个且优选地至少三个全向换能器元件的电声换能器装置。 暴露的结构覆盖有至少一层薄层的耐风材料。 元件的电气输出相加在一起，以提供具有增加的信噪比的输出信号。 该信号可能受到附加的信号处理，例如滤波和/或电平敏感信号抑制。

公开(公告)号：US20090226004A1

公开(公告)日：2009-09-10

申请号：US10587657

申请日：2005-01-27

Applicant: Ole Møller Sørensen

Inventor： Ole Møller Sørensen

IPC: H04R3/00

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

Abstract: Microphone array for achieving a substantially frequency-independent directivity using a plurality of microphones disposed along a rectilinear array. The rectilinear array is at least as long as the wavelength of the lowest frequency, where a useful directivity is desired. The rectilinear array has a first end and a second end. The microphones close to the first end are intended for the highest frequencies and the microphones close to the second end are intended for the lowest frequencies. The mutual spacing of the microphones is frequency-dependent. The signals from the individual microphones are band-pass filtered, the passbands and cut-off frequencies of the individual band-pass filters being adapted to the frequency band the individual microphones are intended for. The individual band-pass filters are adapted such that the amplitude of the summated signal after band-pass filtering is substantially the same when a sinus-shaped test signal is used, the amplitude of said test signal being constant and the frequency of said test signal varying within the frequency range where the microphone array is to have a substantially frequency-independent directivity.

Abstract translation: 用于使用沿着直线阵列布置的多个麦克风实现基本上频率独立的方向性的麦克风阵列。 直线阵列至少与最低频率的波长一样长，其中期望有用的方向性。 直线阵列具有第一端和第二端。 靠近第一端的麦克风是用于最高频率的，靠近第二端的麦克风用于最低频率。 麦克风的相互间隔是频率依赖的。 来自各个麦克风的信号被带通滤波，各个带通滤波器的通带和截止频率适合于各个麦克风所预期的频带。 单独的带通滤波器适于使得当使用窦状测试信号时，带通滤波后的求和信号的振幅基本相同，所述测试信号的幅度恒定，并且所述测试信号的频率 在麦克风阵列将具有基本上与频率无关的方向性的频率范围内变化。

公开(公告)号：US20090180633A1

公开(公告)日：2009-07-16

申请号：US12302653

申请日：2007-05-24

Applicant: Toshiaki Ishibashi ,  Ryo Tanaka ,  Satoshi Ukai

Inventor： Toshiaki Ishibashi ,  Ryo Tanaka ,  Satoshi Ukai

IPC: H04R29/00

CPC classification number: H04R1/406 ,  H04R1/403 ,  H04R27/00 ,  H04R2201/403 ,  H04R2201/405

Abstract: A level ratio calculation circuit calculates average signal level data of signal level data corresponding to each sound collection beam signal, and calculates a level ratio between the average signal level data and each of the signal level data. Since a diffraction sound is substantially equal to all the signal level data, a diffraction sound component of the average signal level data also becomes substantially equal. On the other hand, a collection sound from a speaker is specific to the signal level data of the corresponding sound collection beam signal. Therefore, at the level ratio, the portion corresponding to the diffraction sound is flat and a data level becomes high locally in only the portion corresponding to the collection sound. By using this, the sound collection beam signal including the collection sound is detected.

Abstract translation: 电平比计算电路计算与每个声音采集束信号相对应的信号电平数据的平均信号电平数据，并且计算平均信号电平数据与每个信号电平数据之间的电平比。 由于衍射声音基本上等于所有信号电平数据，平均信号电平数据的衍射声分量也变得基本相等。 另一方面，来自扬声器的收集声音特定于对应的声音采集束信号的信号电平数据。 因此，在电平比上，对应于衍射声的部分是平坦的，并且数据电平仅在与收集声音对应的部分中局部变高。 通过使用它，检测包括收集声音的声音采集束信号。

公开(公告)号：US20080075298A1

公开(公告)日：2008-03-27

申请号：US11859129

申请日：2007-09-21

Applicant: Hiroyuki Mori

Inventor： Hiroyuki Mori

IPC: H04R5/027 ,  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，由此从 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：US07319641B2

公开(公告)日：2008-01-15

申请号：US10492138

申请日：2002-10-10

Applicant: Angus Gavin Goudie ,  Paul Thomas Troughton ,  Anthony Hooley

Inventor： Angus Gavin Goudie ,  Paul Thomas Troughton ,  Anthony Hooley

IPC: H04B1/02 ,  H04R5/00

CPC classification number: H04R3/12 ,  H04R1/403 ,  H04R2201/401 ,  H04R2201/405 ,  H04R2203/12 ,  H04R2205/022

Abstract: The invention provides transducer arrays which are capable of outputting sound beams having a relatively constant width, and with minimal sidelobes, across a range of frequencies. This is achieved by utilising one or more digital signal modifiers within the signal path between the input sound signal and the array of transducers. Variable window functions are also disclosed.

Abstract translation: 本发明提供了能够在频率范围内输出具有相对恒定的宽度和极小旁瓣的声束的换能器阵列。 这通过在输入声音信号和换能器阵列之间的信号路径内利用一个或多个数字信号修改器来实现。 还公开了可变窗函数。

公开(公告)号：US20070127736A1

公开(公告)日：2007-06-07

申请号：US10563072

申请日：2004-06-30

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: The invention is directed to a handsfree system for use in a vehicle comprising a microphone array with at least two microphones and a signal processing means wherein the signal processing means comprises the superdirective beamformer with fixed superdirective filters.

Abstract translation: 本发明涉及一种用于车辆的免提系统，其包括具有至少两个麦克风的麦克风阵列和信号处理装置，其中所述信号处理装置包括具有固定超向量滤波器的超向波束形成器。