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公开(公告)号：US07415117B2
公开(公告)日：2008-08-19
申请号：US10792313
申请日：2004-03-02
申请人： Ivan Tashev , Henrique Malvar
发明人： Ivan Tashev , Henrique Malvar
CPC分类号： H04R3/005
摘要： The ability to combine multiple audio signals captured from the microphones in a microphone array is frequently used in beamforming systems. Typically, beamforming involves processing the output audio signals of the microphone array in such a way as to make the microphone array act as a highly directional microphone. In other words, beamforming provides a “listening beam” which points to a particular sound source while often filtering out other sounds. A “generic beamformer,” as described herein automatically designs a set of beams (i.e., beamforming) that cover a desired angular space range within a prescribed search area. Beam design is a function of microphone geometry and operational characteristics, and also of noise models of the environment around the microphone array. One advantage of the generic beamformer is that it is applicable to any microphone array geometry and microphone type.
摘要翻译： 在波束成形系统中经常使用组合从麦克风阵列中的麦克风捕获的多个音频信号的能力。 通常，波束成形涉及以这样的方式处理麦克风阵列的输出音频信号，使得麦克风阵列充当高度定向的麦克风。 换句话说，波束成形提供指向特定声源的“收听波束”，同时经常滤除其他声音。 如本文所述，“通用波束形成器”自动设计覆盖规定搜索区域内的期望角度空间范围的一组波束（即，波束形成）。 光束设计是麦克风几何和操作特性以及麦克风阵列周围环境的噪声模型的功能。 通用波束形成器的一个优点是它适用于任何麦克风阵列几何形状和麦克风类型。
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公开(公告)号：US20050175190A1
公开(公告)日：2005-08-11
申请号：US10775371
申请日：2004-02-09
申请人： Ivan Tashev , Ross Cutler , Henrique Malvar , Daniel Sisolak , John Unverferth
发明人： Ivan Tashev , Ross Cutler , Henrique Malvar , Daniel Sisolak , John Unverferth
CPC分类号： H04R3/005
摘要： A self-descriptive microphone array includes a microphone array memory, such as, for example a ROM, EEPROM, or other conventional memory, which contains a microphone array device description. This device description includes parametric information which defines operational characteristics and configuration of the microphone array. In further embodiments, the microphone array uses any of a variety of conventional wired or wireless computer interfaces, including serial, IEEE 1394, USB, Bluetooth™, etc., to connect to a computing device. Once connected, the microphone array provides its device description to the computing device. Sound processing software residing within the computing device is then automatically configured for optimally interacting with one or more analog or digital audio signals provided by the microphone array. In another embodiment, the microphone array performs integrated self calibration for automatically updating the device description. The self calibration is performed either upon connection to the computing device, or upon regular or user-specified intervals.
摘要翻译： 自描述性麦克风阵列包括麦克风阵列存储器，例如ROM，EEPROM或其它包含麦克风阵列器件描述的常规存储器。 该设备描述包括定义麦克风阵列的操作特性和配置的参数信息。 在另外的实施例中，麦克风阵列使用包括串行IEEE 1394，USB，蓝牙TM等在内的各种常规有线或无线计算机接口中的任一者来连接到计算设备。 一旦连接，麦克风阵列将其设备描述提供给计算设备。 然后，驻留在计算设备内的声音处理软件被自动配置成与由麦克风阵列提供的一个或多个模拟或数字音频信号进行最佳的交互。 在另一个实施例中，麦克风阵列执行集成自校准以自动更新设备描述。 自校准在连接到计算设备或者按照常规或用户指定的间隔执行。
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公开(公告)号：US07428309B2
公开(公告)日：2008-09-23
申请号：US10772528
申请日：2004-02-04
申请人： Henrique Malvar , Ivan Tashev
发明人： Henrique Malvar , Ivan Tashev
CPC分类号： H04R3/005
摘要： An analog preamplifier measurement system for a microphone array builds on conventional microphone arrays by providing an integral “self-calibration system.” This self-calibration system automatically injects an excitation pulse of a known magnitude and phase to all preamplifier inputs within the microphone array. The resulting analog waveform from each preamplifier output is then measured. A frequency analysis, such as, for example, a Fourier or Fast Fourier Transform (FFT), or other conventional frequency analysis, of each of the resulting waveforms is then performed. The results of this frequency analysis are then used to automatically compute frequency-domain compensation gains (e.g., magnitude and phase gains) for each preamplifier for matching or balancing the responses of all of the preamplifiers with each other.
摘要翻译： 用于麦克风阵列的模拟前置放大器测量系统通过提供集成的“自校准系统”建立在传统麦克风阵列上。 该自校准系统自动将已知幅度和相位的激励脉冲注入到麦克风阵列内的所有前置放大器输入端。 然后测量每个前置放大器输出的结果模拟波形。 然后执行每个所得到的波形的频率分析，例如傅里叶或快速傅里叶变换（FFT）或其他常规频率分析。 然后，该频率分析的结果用于自动计算每个前置放大器的频域补偿增益（例如，幅度和相位增益），用于使所有前置放大器的响应彼此匹配或平衡。
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公开(公告)号：US20050169483A1
公开(公告)日：2005-08-04
申请号：US10772528
申请日：2004-02-04
申请人： Henrique Malvar , Ivan Tashev
发明人： Henrique Malvar , Ivan Tashev
CPC分类号： H04R3/005
摘要： An analog preamplifier measurement system for a microphone array builds on conventional microphone arrays by providing an integral “self-calibration system.” This self-calibration system automatically injects an excitation pulse of a known magnitude and phase to all preamplifier inputs within the microphone array. The resulting analog waveform from each preamplifier output is then measured. A frequency analysis, such as, for example, a Fourier or Fast Fourier Transform (FFT), or other conventional frequency analysis, of each of the resulting waveforms is then performed. The results of this frequency analysis are then used to automatically compute frequency-domain compensation gains (e.g., magnitude and phase gains) for each preamplifier for matching or balancing the responses of all of the preamplifiers with each other.
摘要翻译： 用于麦克风阵列的模拟前置放大器测量系统通过提供集成的“自校准系统”建立在传统麦克风阵列上。 该自校准系统自动将已知幅度和相位的激励脉冲注入到麦克风阵列内的所有前置放大器输入端。 然后测量每个前置放大器输出的结果模拟波形。 然后执行每个所得到的波形的频率分析，例如傅里叶或快速傅里叶变换（FFT）或其他常规频率分析。 然后，该频率分析的结果用于自动计算每个前置放大器的频域补偿增益（例如，幅度和相位增益），用于使所有前置放大器的响应彼此匹配或平衡。
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5.发明申请Systems and methods for novel real-time audio-visual communication and data collaboration 有权新型实时视听通信和数据协作的系统和方法公开(公告)号：US20050262201A1
公开(公告)日：2005-11-24
申请号：US10836778
申请日：2004-04-30
申请人： Eric Rudolph , Yong Rui , Henrique Malvar , Li-Wei He , Michael Cohen , Ivan Tashev
发明人： Eric Rudolph , Yong Rui , Henrique Malvar , Li-Wei He , Michael Cohen , Ivan Tashev
CPC分类号： H04L12/1827 , H04L12/1831 , H04L29/06027 , H04L65/403 , H04L65/4038
摘要： Systems and methods are disclosed that facilitate real-time information exchange in a multimedia conferencing environment. Data Client(s) facilitate data collaboration between users and are maintained separately from audio/video (AV) Clients that provide real-time communication functionality. Data Clients can be remotely located with respect to one another and with respect to a server. A remote user Stand-in Device can be provided that comprises a display to present a remote user to local users, a digital automatic pan/tilt/zoom camera to capture imagery in, for example, a conference room and provide real-time information to an AV Client in a remote office, and a microphone array that can similarly provide real-time audio information from the conference room to an AV Client in the remote office. The invention further facilitates file transfer and presentation broadcast between Data Clients in a single location or in a plurality of disparate locations.
摘要翻译： 公开了促进多媒体会议环境中的实时信息交换的系统和方法。 数据客户端促进用户之间的数据协作，并与提供实时通信功能的音频/视频（AV）客户端分开维护。 数据客户端可以相对于彼此和相对于服务器远程定位。 可以提供远程用户待机设备，其包括向本地用户呈现远程用户的显示器，用于在例如会议室中捕获图像的数字自动摇摄/俯仰/变焦相机，并且提供实时信息 远程办公室中的AV客户端以及可以类似地从会议室向远程办公室中的AV客户端提供实时音频信息的麦克风阵列。 本发明进一步便于在单个位置或多个不同位置的数据客户端之间的文件传送和呈现广播。
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公开(公告)号：US20050195988A1
公开(公告)日：2005-09-08
申请号：US10792313
申请日：2004-03-02
申请人： Ivan Tashev , Henrique Malvar
发明人： Ivan Tashev , Henrique Malvar
IPC分类号： H04R1/40 , G01S5/18 , G10K11/00 , G10K11/178 , G10L11/00 , H04M3/56 , H04R1/32 , H04R3/00 , H04R5/027
CPC分类号： H04R3/005
摘要： The ability to combine multiple audio signals captured from the microphones in a microphone array is frequently used in beamforming systems. Typically, beamforming involves processing the output audio signals of the microphone array in such a way as to make the microphone array act as a highly directional microphone. In other words, beamforming provides a “listening beam” which points to a particular sound source while often filtering out other sounds. A “generic beamformer,” as described herein automatically designs a set of beams (i.e., beamforming) that cover a desired angular space range within a prescribed search area. Beam design is a function of microphone geometry and operational characteristics, and also of noise models of the environment around the microphone array. One advantage of the generic beamformer is that it is applicable to any microphone array geometry and microphone type.
摘要翻译： 在波束成形系统中经常使用组合从麦克风阵列中的麦克风捕获的多个音频信号的能力。 通常，波束成形涉及以这样的方式处理麦克风阵列的输出音频信号，使得麦克风阵列充当高度定向的麦克风。 换句话说，波束成形提供指向特定声源的“收听波束”，同时经常滤除其他声音。 如本文所述，“通用波束形成器”自动设计覆盖规定搜索区域内的期望角度空间范围的一组波束（即，波束形成）。 光束设计是麦克风几何和操作特性以及麦克风阵列周围环境的噪声模型的功能。 通用波束形成器的一个优点是它适用于任何麦克风阵列几何形状和麦克风类型。
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公开(公告)号：US20130053053A1
公开(公告)日：2013-02-28
申请号：US13215230
申请日：2011-08-23
申请人： Sharad Agarwal , Ivan Tashev , Paramvir Bahl , Ionut Constandache
发明人： Sharad Agarwal , Ivan Tashev , Paramvir Bahl , Ionut Constandache
摘要： Various technologies pertaining to localizing multiple mobile computing devices in an indoor environment are described. Pairs of microphone arrays are selectively positioned in an indoor environment. A localization service assigns a frequency and schedule to a mobile telephone, and the mobile telephone begins outputting vibrations at the assigned frequency and in conformance with the assigned schedule. The microphone arrays sense the vibrations, and angles between the microphone arrays, respectively, and the mobile computing device are computed based upon the sensed vibrations. Such angles are subsequently employed to compute the location of the mobile computing device in the indoor environment.
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公开(公告)号：US20110274291A1
公开(公告)日：2011-11-10
申请号：US13187618
申请日：2011-07-21
申请人： Ivan Tashev , Alejandro Acero , Byung-Jun Yoon
发明人： Ivan Tashev , Alejandro Acero , Byung-Jun Yoon
IPC分类号： H04B15/00
CPC分类号： G01S3/86 , H04B7/0854 , H04R3/005 , H04R2430/20
摘要： A novel adaptive beamforming technique with enhanced noise suppression capability. The technique incorporates the sound-source presence probability into an adaptive blocking matrix. In one embodiment the sound-source presence probability is estimated based on the instantaneous direction of arrival of the input signals and voice activity detection. The technique guarantees robustness to steering vector errors without imposing ad hoc constraints on the adaptive filter coefficients. It can provide good suppression performance for both directional interference signals as well as isotropic ambient noise.
摘要翻译： 一种具有增强噪声抑制能力的新型自适应波束成形技术。 该技术将声源存在概率纳入自适应阻塞矩阵。 在一个实施例中，基于输入信号的瞬时到达方向和语音活动检测来估计声源存在概率。 该技术保证对导向矢量误差的鲁棒性，而不会对自适应滤波器系数施加自组织约束。 它可以为双向干扰信号以及各向同性环境噪声提供良好的抑制性能。
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公开(公告)号：US20110238414A1
公开(公告)日：2011-09-29
申请号：US12749333
申请日：2010-03-29
申请人： Yun-Cheng Ju , Stefanie Tomko , Wei-Ting Frank Liu , Ivan Tashev
发明人： Yun-Cheng Ju , Stefanie Tomko , Wei-Ting Frank Liu , Ivan Tashev
IPC分类号： G10L19/00
CPC分类号： H04M1/72519 , H04M1/505 , H04M3/493 , H04M2201/40 , H04M2250/74
摘要： A method for managing an interaction of a calling party to a communication partner is provided. The method includes automatically determining if the communication partner expects DTMF input. The method also includes translating speech input to one or more DTMF tones and communicating the one or more DTMF tones to the communication partner, if the communication partner expects DTMF input.
摘要翻译： 提供了一种用于管理主叫方与通信对方的交互的方法。 该方法包括自动确定通信伙伴是否期望DTMF输入。 如果通信伙伴期望DTMF输入，该方法还包括将语音输入转换成一个或多个DTMF音调并将一个或多个DTMF音通信给通信对方。
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10.发明授权公开(公告)号：US07634533B2
公开(公告)日：2009-12-15
申请号：US10836778
申请日：2004-04-30
申请人： Eric Rudolph , Yong Rui , Henrique S Malvar , Li-Wei He , Michael F Cohen , Ivan Tashev
发明人： Eric Rudolph , Yong Rui , Henrique S Malvar , Li-Wei He , Michael F Cohen , Ivan Tashev
IPC分类号： G06F15/16
CPC分类号： H04L12/1827 , H04L12/1831 , H04L29/06027 , H04L65/403 , H04L65/4038
摘要： Systems and methods are disclosed that facilitate real-time information exchange in a multimedia conferencing environment. Data Client(s) facilitate data collaboration between users and are maintained separately from audio/video (AV) Clients that provide real-time communication functionality. Data Clients can be remotely located with respect to one another and with respect to a server. A remote user Stand-in Device can be provided that comprises a display to present a remote user to local users, a digital automatic pan/tilt/zoom camera to capture imagery in, for example, a conference room and provide real-time information to an AV Client in a remote office, and a microphone array that can similarly provide real-time audio information from the conference room to an AV Client in the remote office. The invention further facilitates file transfer and presentation broadcast between Data Clients in a single location or in a plurality of disparate locations.
摘要翻译： 公开了促进多媒体会议环境中的实时信息交换的系统和方法。 数据客户端促进用户之间的数据协作，并与提供实时通信功能的音频/视频（AV）客户端分开维护。 数据客户端可以相对于彼此和相对于服务器远程定位。 可以提供远程用户待机设备，其包括向本地用户呈现远程用户的显示器，用于在例如会议室中捕获图像的数字自动摇摄/俯仰/变焦相机，并且提供实时信息 远程办公室中的AV客户端以及可以类似地从会议室向远程办公室中的AV客户端提供实时音频信息的麦克风阵列。 本发明进一步便于在单个位置或多个不同位置的数据客户端之间的文件传送和呈现广播。
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