公开(公告)号：US20150049583A1

公开(公告)日：2015-02-19

申请号：US14387171

申请日：2013-03-21

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Timothy J. Neal ,  Glenn N. Dickins

IPC: H04R29/00

CPC classification number: H04R29/004 ,  H04M3/568 ,  H04R29/006 ,  H04R2201/405

Abstract: A plurality of acoustic sensors in a non-anechoic environment are calibrated with the aim of removing manufacturing tolerances and degradation over time but preserving position-dependent differences between the sensors, The sensors are excited by an acoustic stimulus which has either time-dependent characteristics or finite duration. The calibration is to be based on diffuse-field excitation only, in which indirect propagation (including single or multiple reflections) dominate over any direct-path excitation. For this purpose, the calibration process considers only a non-initial portion of sensor outputs and/or of an impulse response derived there-from. Based on these data, a frequency-dependent magnitude response function is estimated and compared with a target response function, from which a calibration function is derived.

Abstract translation: 在非消声环境中的多个声学传感器被校准，目的是消除制造公差和时间上的劣化，但是保持传感器之间的位置相关差异。传感器被具有时间依赖特性的声学刺激激发，或者 持续时间有限。 校准仅基于扩散场激励，其中间接传播（包括单次或多次反射）在任何直接路径激励上占主导地位。 为此，校准过程仅考虑传感器输出的非初始部分和/或从其导出的脉冲响应。 基于这些数据，估计频率依赖的幅度响应函数并与目标响应函数进行比较，从该目标响应函数导出校准函数。

公开(公告)号：US20140286504A1

公开(公告)日：2014-09-25

申请号：US14356274

申请日：2012-11-06

Applicant: Honda Access Corp.

Inventor： Shiro Iwai ,  Kazuhiro Nakadai ,  Hiroshi Tsujino

IPC: H04R1/02

CPC classification number: H04R1/028 ,  B60R1/12 ,  H04M1/6091 ,  H04R1/02 ,  H04R1/083 ,  H04R1/20 ,  H04R1/326 ,  H04R1/406 ,  H04R3/005 ,  H04R2201/405 ,  H04R2499/13

Abstract: A microphone array arrangement structure in a vehicle cabin is provided with multiple microphones arranged in a convex line. The microphones include a first microphone, and the direction of the axis of the first microphone faces the mouth of the driver. The microphone array arrangement structure is provided with covers housing the microphones and having multiple holes. The front surface of the covers form a convexly curved line, and each of the microphones is fixed inside of a cover to correspond to one of the holes.

Abstract translation: 车厢中的麦克风阵列布置结构设置有以凸线布置的多个麦克风。 麦克风包括第一麦克风，并且第一麦克风的轴线的方向面向驱动器的口。 麦克风阵列布置结构设置有容纳麦克风并具有多个孔的盖。 盖的前表面形成凸曲线，并且每个麦克风固定在盖的内部以对应于其中一个孔。

公开(公告)号：US20140140551A1

公开(公告)日：2014-05-22

申请号：US13683942

申请日：2012-11-21

Applicant: STRATEGIC POLYMER SCIENCES, INC.

Inventor： Christophe Ramstein

IPC: H04R17/00

CPC classification number: H04R17/005 ,  H04R1/00 ,  H04R17/025 ,  H04R2201/401 ,  H04R2201/405 ,  H04R2205/022 ,  H04R2400/01 ,  H04R2400/03 ,  H04R2499/11

Abstract: A localized multimodal haptic system includes one or more electromechanical polymer (EMP) transducers, each including an EMP layer, such as an electrostrictive polymer active layer. In some applications the EMP transducer may perform an actuator function or a sensor function, or both. The EMP polymer layer has a first surface and a second surface on which one or more electrodes are provided. The EMP layer of the EMP actuator may be 5 microns thick or less. The EMP transducers may provide local haptic response to a local a stimulus. In one application, a touch sensor may be associated with each EMP transducer, such that the haptic event at the touch sensor may be responded to by activating only the associated EMP transducer. Furthermore, the EMP transducer may act as its own touch sensor. A variety of haptic responses may be made available. The EMP transducers may be used in various other applications, such as providing complex surface morphology and audio speakers.

Abstract translation: 局部多模式触觉系统包括一个或多个机电聚合物（EMP）换能器，每个都包括EMP层，例如电致伸缩聚合物活性层。 在某些应用中，EMP传感器可以执行执行器功能或传感器功能，或两者兼有。 EMP聚合物层具有第一表面和第二表面，其上设置有一个或多个电极。 EMP致动器的EMP层可以为5微米厚或更小。 EMP传感器可以为局部刺激提供局部触觉响应。 在一个应用中，触摸传感器可以与每个EMP传感器相关联，使得触摸传感器处的触觉事件可以通过仅激活相关联的EMP换能器来响应。 此外，EMP换能器可以作为其自身的触摸传感器。 可以提供各种触觉响应。 EMP传感器可用于各种其他应用，例如提供复杂的表面形态和音频扬声器。

公开(公告)号：US20140098971A1

公开(公告)日：2014-04-10

申请号：US13645929

申请日：2012-10-05

Applicant: Istvan B. Kadar

Inventor： Istvan B. Kadar

IPC: H04B3/00

CPC classification number: H04R3/12 ,  H04R2201/405 ,  H04R2430/20

Abstract: A system and method for the directional transmission of sound is disclosed. In one embodiment, the system comprises an audio source configured to generate an audio signal, a control module configured to receive the audio signal and generate a driving signal, based at least in part on the audio signal, and an array comprising a plurality of loudspeakers, wherein the loudspeakers are linearly arranged such that the spacing between two adjacent loudspeakers increases along the array. In a particularly, embodiment, the spacing increases exponentially, and broadband dipole loudspeakers are used.

Abstract translation: 公开了一种用于方向性传播声音的系统和方法。 在一个实施例中，该系统包括被配置为产生音频信号的音频源，至少部分地基于音频信号而配置成接收音频信号并产生驱动信号的控制模块，以及包括多个扬声器 ，其中所述扬声器线性地布置成使得两个相邻扬声器之间的间隔沿阵列增加。 在特别的实施例中，间距指数增加，并且使用宽带偶极扬声器。

公开(公告)号：US20140037100A1

公开(公告)日：2014-02-06

申请号：US13959695

申请日：2013-08-05

Applicant: QSound Labs, Inc.

Inventor： David Giesbrecht

IPC: G10K11/00

CPC classification number: G10K11/002 ,  H04R1/1083 ,  H04R1/406 ,  H04R3/005 ,  H04R29/006 ,  H04R2201/405 ,  H04R2410/05 ,  H04R2430/23 ,  H04R2499/11 ,  H04R2499/13

Abstract: Systems and methods of improved noise reduction include the steps of: receiving an audio signal from two or more acoustic sensors; applying a beamformer to employ a first noise cancellation algorithm; applying a noise reduction post-filter module to the audio signal including: estimating a current noise spectrum of the received audio signal after the application of the first noise cancellation algorithm, wherein the current noise spectrum is estimated using the audio signal received by the second acoustic sensor; determining a punished noise spectrum using the time-average level difference between the audio signal received by the first acoustic sensor and the current noise spectrum; determining a final noise estimate by subtracting the punished noise spectrum from the current noise spectrum; and applying a second noise reduction algorithm to the audio signal received by the first acoustic sensor using the final noise estimate; and outputting an audio stream with reduced background noise.

Abstract translation: 改进噪声降低的系统和方法包括以下步骤：从两个或更多个声学传感器接收音频信号; 应用波束形成器来采用第一噪声消除算法; 将噪声降低后置滤波器模块应用于所述音频信号，包括：在应用所述第一噪声消除算法之后估计接收到的音频信号的当前噪声频谱，其中使用由所述第二声音接收的所述音频信号来估计所述当前噪声频谱 传感器; 使用由第一声传感器接收的音频信号与当前噪声谱之间的时间平均电平差确定惩罚噪声谱; 通过从当前噪声谱减去惩罚性噪声谱确定最终噪声估计; 以及使用所述最终噪声估计对所述第一声学传感器接收的所述音频信号应用第二降噪算法; 并输出具有降低的背景噪声的音频流。

公开(公告)号：US20130294624A1

公开(公告)日：2013-11-07

申请号：US13926897

申请日：2013-06-25

Applicant: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.

Inventor： René RODIGAST ,  Michael STRAUSS

IPC: H04R5/02

CPC classification number: H04R5/02 ,  H04R1/403 ,  H04R3/12 ,  H04R27/00 ,  H04R2201/403 ,  H04R2201/405 ,  H04R2430/01 ,  H04S3/00 ,  H04S2420/13

Abstract: A driving device for a sound system by loudspeaker signals, wherein the sound system has a wave field synthesis loudspeaker array and one or several supply loudspeakers arranged separate from the wave field synthesis array includes an audio input for receiving at least one audio signal from at least one sound source, a position input for receiving information on a position of the sound source, a wave field synthesis unit for calculating loudspeaker signals for the loudspeakers of the wave field synthesis loudspeaker array, and a provider for providing the loudspeaker signal for the one or the several supply loudspeakers. The driving device enables a sound system by means of which sound localization becomes possible for the audience and at the same time pleasant levels can be achieved also in the first rows of the audience.

Abstract translation: 一种用于通过扬声器信号进行声音系统的驱动装置，其中所述声音系统具有波场合成扬声器阵列和与所述波场合成阵列分离布置的一个或多个供电扬声器包括音频输入，用于至少从至少一个音频信号接收 一个声源，用于接收关于声源的位置的信息的位置输入，用于计算所述波场合成扬声器阵列的扬声器的扬声器信号的波场合成单元，以及用于为所述波场合成扬声器阵列的扬声器提供扬声器信号的提供器， 几个供应扬声器。 驱动装置能够实现声音系统，通过该系统，听众可以进行声音定位，并且同时可以在观众的第一排中实现愉快的水平。

公开(公告)号：US08553904B2

公开(公告)日：2013-10-08

申请号：US12904921

申请日：2010-10-14

Applicant: Amir Said ,  Bowon Lee ,  Ton Kalker

Inventor： Amir Said ,  Bowon Lee ,  Ton Kalker

IPC: H04R3/00

CPC classification number: G10L25/78 ,  G01S5/18 ,  H04R3/005 ,  H04R2201/405

Abstract: Systems and methods for performing sound source localization are provided. In one aspect, a method for locating a sound source using a computing device subdivides a space into subregions. The method then computes a sound source power for each of subregions and determines which of the sound source energies is the largest. When the volume of the subregion is less than a threshold volume, the method outputs the subregion having the largest sound source power. Otherwise, the stages of partitioning, computing, and determining the subregion having the largest sound source power is repeated.

Abstract translation: 提供了用于执行声源定位的系统和方法。 一方面，使用计算设备定位声源的方法将空间细分为子区域。 该方法然后计算每个子区域的声源功率，并确定哪个声源能量最大。 当该子区域的音量小于阈值音量时，该方法输出具有最大声源功率的子区域。 否则，重复分区，计算和确定具有最大声源功率的子区域的阶段。

公开(公告)号：US20130136273A1

公开(公告)日：2013-05-30

申请号：US13307320

申请日：2011-11-30

Applicant: Joseph Marash ,  Baruch Berdugo

Inventor： Joseph Marash ,  Baruch Berdugo

IPC: H04R3/00

CPC classification number: H04R29/005 ,  G10L25/48 ,  H04M3/2236 ,  H04M3/568 ,  H04M2203/509 ,  H04R3/005 ,  H04R2201/405 ,  H04R2410/01 ,  H04R2420/01

Abstract: A method for real-time monitoring of audio signals reception quality includes receiving output signals from a plurality of microphone clusters, each microphone cluster having at least two microphone units to receive audio signals from at least two distinct directions and output corresponding electrical signals; identifying comparative features of output signals for each of the microphone clusters; and selecting at least one microphone cluster based on the identified features. A system for real-time monitoring of audio signals reception quality includes a plurality of microphone clusters, each microphone cluster having at least two microphone units to receive audio signals from at least two distinct directions and output corresponding electrical signals; and a main audio unit to identify comparative features of output signals for each of the microphone clusters and to select at least one microphone cluster based on the identified features.

Abstract translation: 用于音频信号接收质量的实时监测的方法包括从多个麦克风群集接收输出信号，每个麦克风群具有至少两个麦克风单元，以从至少两个不同的方向接收音频信号并输出​​相应的电信号; 识别每个麦克风簇的输出信号的比较特征; 以及基于所识别的特征来选择至少一个麦克风群集。 用于音频信号接收质量的实时监测的系统包括多个麦克风群，每个麦克风群具有至少两个麦克风单元，以从至少两个不同的方向接收音频信号并输出​​相应的电信号; 以及主音频单元，用于识别每个麦克风簇的输出信号的比较特征，并且基于所识别的特征来选择至少一个麦克风簇。

公开(公告)号：US08189818B2

公开(公告)日：2012-05-29

申请号：US10944871

申请日：2004-09-21

Applicant: Toshio Takahashi ,  Kazuyuki Saito ,  Makoto Yamaguchi ,  Kei Sakamoto

Inventor： Toshio Takahashi ,  Kazuyuki Saito ,  Makoto Yamaguchi ,  Kei Sakamoto

IPC: H04R3/00

CPC classification number: H04R1/406 ,  H04R2201/405 ,  H04R2410/01 ,  H04R2410/05 ,  H04R2499/15

Abstract: In an electronic apparatus, microphones are arranged parallel to one side of a display screen so as to be spaced apart from each other on the front surface of a display whose display screen is exposed. Together with the microphone, a microphone is arranged parallel to other side different from one side of the display screen. Of the microphones, the microphones are selected when one side of the display screen serves as a bottom, and the microphones are selected when other side of the display screen serves as the bottom. A voice input process is then executed.

Abstract translation: 在电子设备中，麦克风平行于显示屏的一侧布置成在显示屏被曝光的显示器的前表面上彼此间隔开。 与麦克风一起，麦克风平行于与显示屏的一侧不同的另一侧布置。 在麦克风中，当显示屏幕的一侧用作底部时，选择麦克风，并且当显示屏幕的另一侧用作底部时，麦克风被选择。 然后执行语音输入处理。

公开(公告)号：US08139774B2

公开(公告)日：2012-03-20

申请号：US12852967

申请日：2010-08-09

Applicant: William Berardi ,  Michael Dublin ,  Hilmar Lehnert ,  Michael W. Stark ,  Guy Torio

Inventor： William Berardi ,  Michael Dublin ,  Hilmar Lehnert ,  Michael W. Stark ,  Guy Torio

IPC: H04R5/00

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

Abstract: An audio system including a left input channel signal, a right input channel signal, and a discrete center input channel. Circuitry removes correlated content from the left input channel signal and the right input channel signal and inserts the correlated content into the center input channel signal to provide a modified left input channel signal, a modified right input channel signal, and a modified center input channel signal. The modified left input channel signal is radiated by a directional loudspeaker so that radiation in a direction toward a listening area is less than radiation in other directions. The modified right channel input channel signal is radiated by a directional loudspeaker so that radiation in a direction toward a listening area is less than radiation in other directions.

Abstract translation: 包括左输入声道信号，右输入声道信号和离散中心输入声道的音频系统。 电路从左输入通道信号和右输入通道信号中除去相关内容，并将相关内容插入中心输入通道信号，以提供修改后的左输入通道信号，修改后的右输入通道信号和修改后的中心输入通道信号 。 修改的左输入通道信号由定向扬声器辐射，使得朝向收听区域的方向上的辐射小于其它方向上的辐射。 经修改的右声道输入声道信号由定向扬声器辐射，使得朝向收听区域的方向的辐射小于其它方向上的辐射。