公开(公告)号：US07224794B1

公开(公告)日：2007-05-29

申请号：US09394097

申请日：1999-09-13

申请人： Paul Joseph Davis ,  Vasu Iyengar ,  James Charles Popa

发明人： Paul Joseph Davis ,  Vasu Iyengar ,  James Charles Popa

IPC分类号： H04M1/00

CPC分类号： H04M1/6033 ,  H04M1/642 ,  H04M1/652 ,  H04M9/082

摘要： A digital telephone answering device having speakerphone capability allows a recorded message to be played back and heard by the far-end party as well as over the local speakerphone by the near-end party during speakerphone operation as if it were a normal receive signal. Moreover, normal speakerphone conversation is possible during this conversational playback mode allowing the far-end party and/or near-end party to break-in over the played back pre-recorded message as desired and be heard by the other party. Both message and conversation signals are preferably (but not necessarily) at similar levels. Also, the message playback at the near end is preferably (but not necessarily) subject to the same speakerphone digital volume control as that received at the far end.

摘要翻译： 具有扬声器功能的数字电话应答设备允许在扬声器操作期间由远端方以及近端方在本地扬声器电话上播放并听到所记录的消息，就像它是正常接收信号一样。 此外，在该对话回放模式期间，正常的免提电话会话是可能的，允许远端方和/或近端方根据需要插入播放的预先录制的消息，并由另一方听到。 消息和会话信号两者都是相似的（但不一定）。 此外，近端的消息回放优选（但不一定）经受与远端接收的相同的扬声器数字音量控制。

公开(公告)号：US20070005206A1

公开(公告)日：2007-01-04

申请号：US11173736

申请日：2005-07-01

申请人： You Zhang ,  Jeffery Faneuff ,  William Hidden ,  James Hotary ,  Steven Lee ,  Vasu Iyengar

发明人： You Zhang ,  Jeffery Faneuff ,  William Hidden ,  James Hotary ,  Steven Lee ,  Vasu Iyengar

IPC分类号： G06F17/00

CPC分类号： G10L15/26 ,  G06F3/16 ,  G08G1/09675 ,  G08G1/096775 ,  G10L15/063 ,  H04M1/274516 ,  H04M1/6091

摘要： An automotive system provides an integrated user interface for control and communication functions in an automobile or other type of vehicle. The user interface supports voice enabled interactions, as well as other modes of interaction, such as manual interactions using controls such as dashboard or steering wheel mounted controls. The system also includes interfaces to devices in the vehicle, such as wireless interfaces to mobile devices that are brought into the vehicle. The system also provides interfaces to information sources such as a remote server, for example, for accessing information.

摘要翻译： 汽车系统为汽车或其他类型车辆中的控制和通信功能提供集成的用户界面。 用户界面支持语音启用​​的交互，以及其他交互模式，例如使用仪表板或方向盘安装控件等控件的手动交互。 该系统还包括与车辆中的设备的接口，诸如与被带入车辆的移动设备的无线接口。 该系统还提供诸如远程服务器之类的信息源的接口，例如用于访问信息。

公开(公告)号：US20120253798A1

公开(公告)日：2012-10-04

申请号：US13078632

申请日：2011-04-01

申请人： Luke C. Walters ,  Vasu Iyengar ,  Martin David Ring

发明人： Luke C. Walters ,  Vasu Iyengar ,  Martin David Ring

IPC分类号： G10L21/02

CPC分类号： H04R1/1083 ,  G10L21/0208 ,  G10L2021/02165 ,  H04R1/406 ,  H04R3/005 ,  H04R2410/07

摘要： A system for combining signals includes a first microphone generating a first input signal having a first voice component and a first noise component, a second microphone generating a second input signal having a second voice component and a second noise component, a mixing circuit, and an adaptive filter. The mixing circuit applies a first gain having a value α to the first input signal to produce a first scaled signal, applies a second gain having a value 1−α to the second input signal to produce a second scaled signal, and sums the first scaled signal and the second scaled signal to produce a summed signal. The adaptive filter computes an updated value of α to minimize the energy of the summed signal based on the summed signal, the first input signal and the second input signal, and provides the updated value of α to the mixing circuit.

摘要翻译： 一种用于组合信号的系统包括产生具有第一语音分量和第一噪声分量的第一输入信号的第一麦克风，产生具有第二声音分量和第二噪声分量的第二输入信号的第二麦克风，混合电路和 自适应滤波器。 混合电路对第一输入信号施加具有值α的第一增益以产生第一缩放信号，向第二输入信号施加具有值1-α的第二增益以产生第二缩放信号，并将第一缩放 信号和第二缩放信号以产生加和信号。 自适应滤波器根据求和信号，第一输入信号和第二输入信号，计算α的更新值，使求和信号的能量最小化，并将更新的α值提供给混合电路。

公开(公告)号：US20120076320A1

公开(公告)日：2012-03-29

申请号：US13075583

申请日：2011-03-30

申请人： Vasu Iyengar

发明人： Vasu Iyengar

IPC分类号： H04M1/00 ,  H04B7/00 ,  H04B1/38 ,  H04B15/00

CPC分类号： H04M1/60 ,  G10L21/0224 ,  H03G3/32 ,  H04M1/6066

摘要： Methods and apparatuses for deriving a signal-to-noise ratio based at least in part on a measured level of a signal carrying far-end speech, and a measured level of a signal carrying ambient acoustic noise, determining a target gain adjustment based at least in part on the derived signal-to-noise ratio, including determining a coarse gain adjustment and a fine gain adjustment, the target gain adjustment corresponding to a combination of the coarse gain adjustment and the fine gain adjustment, applying the coarse gain adjustment to the signal carrying far-end speech using first gain adjustment circuitry to produce a first gain-adjusted signal, applying the fine gain adjustment to the signal carrying far-end speech using second gain adjustment circuitry to produce a second gain-adjusted signal, and providing a result of combining the first gain-adjusted signal and the second gain-adjusted signal to audio output from a wireless communications device.

摘要翻译： 至少部分地基于测量的携带远端语音的信号的电平以及承载环境声学噪声的信号的测量电平来导出信噪比的方法和装置，至少基于至少 部分地基于导出的信噪比，包括确定粗调增益调整和精细增益调整，对应于粗增益调整和精细增益调整的组合的目标增益调整，将粗增益调整应用于 使用第一增益调整电路携带远端语音的信号，以产生第一增益调整信号，使用第二增益调整电路将精细增益调整应用于携带远端语音的信号，以产生第二增益调整信号， 将第一增益调整信号和第二增益调整信号组合到从无线通信设备输出的音频的结果。

公开(公告)号：US07826945B2

公开(公告)日：2010-11-02

申请号：US11173736

申请日：2005-07-01

申请人： You Zhang ,  Jeffery J. Faneuff ,  William Hidden ,  James T. Hotary ,  Steven C. Lee ,  Vasu Iyengar

发明人： You Zhang ,  Jeffery J. Faneuff ,  William Hidden ,  James T. Hotary ,  Steven C. Lee ,  Vasu Iyengar

IPC分类号： G06F7/00

CPC分类号： G10L15/26 ,  G06F3/16 ,  G08G1/09675 ,  G08G1/096775 ,  G10L15/063 ,  H04M1/274516 ,  H04M1/6091

摘要： An automotive system provides an integrated user interface for control and communication functions in an automobile or other type of vehicle. The user interface supports voice enabled interactions, as well as other modes of interaction, such as manual interactions using controls such as dashboard or steering wheel mounted controls. The system also includes interfaces to devices in the vehicle, such as wireless interfaces to mobile devices that are brought into the vehicle. The system also provides interfaces to information sources such as a remote server, for example, for accessing information.

摘要翻译： 汽车系统为汽车或其他类型车辆中的控制和通信功能提供集成的用户界面。 用户界面支持语音启用​​的交互，以及其他交互模式，例如使用仪表板或方向盘安装控件等控件的手动交互。 该系统还包括与车辆中的设备的接口，诸如与被带入车辆的移动设备的无线接口。 该系统还提供诸如远程服务器之类的信息源的接口，例如用于访问信息。

公开(公告)号：US07035396B1

公开(公告)日：2006-04-25

申请号：US09235319

申请日：1999-01-22

申请人： Richard M. Ubowski ,  Vasu Iyengar

发明人： Richard M. Ubowski ,  Vasu Iyengar

IPC分类号： H04M9/08

CPC分类号： H04M9/082

摘要： A configurable adaptive echo canceler which can perform acoustical echo cancellation (AEC) or hybrid echo cancellation (HEC) under software control. Particular parameters based on the particular application can be associated with either a suitable AEC or a suitable HEC, and the parameters are made selectable through the use of a control register. Exemplary parameters are accuracy of filter coefficients, a span select to manipulate the expected length of the echo path, a step size to adjust the adaptation of the echo cancellation, enablement of a tap update, selection of adaptation mode, center clipper selection, and sub-band or full-band echo cancellation. With the use of audio line switching, the configurable echo canceler can allow various modes of operation of the telephone, some of which may require an AEC in the installed unit and/or some of which may require an HEC. For instance, in a cordless telephone application, in an intercom mode, a configurable echo canceler in a cordless handset receiver and a configurable echo canceler in a base unit may each be configured as AECs. In a base speakerphone mode, the configurable echo canceler in the base unit may be configured to provide both HEC and AEC, while the configurable echo canceler in the cordless handset receiver may be configured as an AEC. In a handset speakerphone mode, the configurable echo canceler in the base unit may be configured as an HEC, while the configurable echo canceler in the cordless handset receiver may be configured as an AEC.

摘要翻译： 一种可配置的自适应回波消除器，可以在软件控制下执行声学回声消除（AEC）或混合回波消除（HEC）。 基于特定应用的特定参数可以与合适的AEC或合适的HEC相关联，并且可以通过使用控制寄存器来选择参数。 示例性参数是滤波器系数的精度，用于操纵回波路径的期望长度的跨度选择，调整回波消除的适应的步长，抽头更新的启用，适配模式的选择，中心选择器和子 带或全频带回波消除。 通过使用音频线路切换，可配置的回波消除器可以允许电话的各种操作模式，其中一些可能需要安装的单元中的AEC和​​/或其中一些可能需要HEC。 例如，在无绳电话应用中，在对讲模式中，无绳手持机接收机中的可配置回波消除器和基本单元中的可配置回波消除器可以各自被配置为AEC。 在基本扬声器模式中，基本单元中的可配置回波消除器可以被配置为提供HEC和AEC，而无绳手持机接收机中的可配置回波消除器可以被配置为AEC。 在手机扬声器模式中，基本单元中的可配置回波消除器可以被配置为HEC，而无绳手持机接收机中的可配置回波消除器可以被配置为AEC。

公开(公告)号：US06385176B1

公开(公告)日：2002-05-07

申请号：US09090733

申请日：1998-06-04

申请人： Vasu Iyengar ,  James Charles Popa

发明人： Vasu Iyengar ,  James Charles Popa

IPC分类号： H04B320

CPC分类号： H04B3/23 ,  H04M9/082

摘要： A controller and a method for controlling the amount of loss in signal paths of a communication system are disclosed. The method includes sampling the impulse response of an echo cancelling circuit, detecting an abnormal signal condition by comparing the impulse response to a reference, and inserting loss into a first signal path when an abnormal signal condition is detected. One controller configuration for adjusting the amount of loss in the signal paths of a communication system has an adjustable attenuator in the signal path having a control signal input, a memory element which stores a reference, and a comparator having one input connected to the memory of the echo canceler circuit which samples the impulse response, another input connected to the memory which stores the reference, and an output connected to the control signal input of the attenuator. Another controller configuration has a program running on a digital signal processor within the communication system, with the program analyzing the impulse response of the echo canceler so as to generate a control signal, and a call programmable gain attenuator in the signal path which is responsive to the control signal from the program to selectively insert or remove loss into the signal path.

摘要翻译： 公开了一种用于控制通信系统的信号路径损失量的控制器和方法。 该方法包括采样回波消除电路的脉冲响应，通过将脉冲响应与参考值进行比较来检测异常信号状态，以及当检测到异常信号条件时将损耗插入第一信号路径。 用于调整通信系统的信号路径中的损耗量的一个控制器配置在具有控制信号输入的信号路径中具有可调衰减器，存储参考的存储元件和具有连接到存储器 对脉冲响应进行采样的回波抵消器电路，连接到存储基准的存储器的另一个输入端以及连接到衰减器的控制信号输入端的输出。 另一个控制器配置具有在通信系统内的数字信号处理器上运行的程序，程序分析回波消除器的脉冲响应以产生控制信号，以及响应于信号路径的信号路径中的呼叫可编程增益衰减器 来自程序的控制信号选择性地将损失插入或移除到信号路径中。

公开(公告)号：US08798278B2

公开(公告)日：2014-08-05

申请号：US13075536

申请日：2011-03-30

申请人： Steven H. Isabelle ,  Vasu Iyengar

发明人： Steven H. Isabelle ,  Vasu Iyengar

IPC分类号： H03G3/20

CPC分类号： G10L21/0208 ,  H04R1/086 ,  H04R2410/07

摘要： Methods and apparatuses for deriving a signal-to-noise ratio based at least in part on a measured level of a signal carrying far-end speech, and a measured level of a signal carrying ambient acoustic noise; determining a target gain adjustment based at least in part on the derived signal-to-noise ratio; applying the target gain adjustment to the signal carrying far-end speech to produce a gain-adjusted signal; and providing the gain-adjusted signal for audio output from a communications device.

摘要翻译： 至少部分地基于承载远端语音的信号的测量电平以及承载环境声学噪声的信号的测量电平来导出信噪比的方法和装置; 至少部分地基于导出的信噪比来确定目标增益调整; 将目标增益调整应用于携带远端语音的信号以产生增益调整信号; 以及提供用于从通信设备输出音频的增益调整信号。

公开(公告)号：US08620650B2

公开(公告)日：2013-12-31

申请号：US13078632

申请日：2011-04-01

申请人： Luke C. Walters ,  Vasu Iyengar ,  Martin David Ring

发明人： Luke C. Walters ,  Vasu Iyengar ,  Martin David Ring

IPC分类号： G10L21/00

CPC分类号： H04R1/1083 ,  G10L21/0208 ,  G10L2021/02165 ,  H04R1/406 ,  H04R3/005 ,  H04R2410/07

摘要： A system for combining signals includes a first microphone generating a first input signal having a first voice component and a first noise component, a second microphone generating a second input signal having a second voice component and a second noise component, a mixing circuit, and an adaptive filter. The mixing circuit applies a first gain having a value α to the first input signal to produce a first scaled signal, applies a second gain having a value 1−α to the second input signal to produce a second scaled signal, and sums the first scaled signal and the second scaled signal to produce a summed signal. The adaptive filter computes an updated value of α to minimize the energy of the summed signal based on the summed signal, the first input signal and the second input signal, and provides the updated value of α to the mixing circuit.

摘要翻译： 一种用于组合信号的系统包括产生具有第一语音分量和第一噪声分量的第一输入信号的第一麦克风，产生具有第二声音分量和第二噪声分量的第二输入信号的第二麦克风，混合电路和 自适应滤波器。 混合电路对第一输入信号施加具有α值的第一增益以产生第一缩放信号，向第二输入信号施加具有值1-α的第二增益以产生第二缩放信号，并将第一缩放 信号和第二缩放信号以产生加和信号。 自适应滤波器计算更新的α值，以基于求和的信号，第一输入信号和第二输入信号来最小化求和信号的能量，并且将更新的α值提供给混合电路。

公开(公告)号：US20120076321A1

公开(公告)日：2012-03-29

申请号：US13075732

申请日：2011-03-30

申请人： Martin D. Ring ,  Vasu Iyengar

发明人： Martin D. Ring ,  Vasu Iyengar

IPC分类号： H04B15/00 ,  H04R1/02

CPC分类号： H04R1/1083 ,  G10L21/02 ,  H04R1/086 ,  H04R1/38 ,  H04R2201/107 ,  H04R2410/07 ,  H04R2420/07 ,  H04R2430/01 ,  H04R2460/01

摘要： A microphone includes a sensing element having two opposing sides; and a housing including a first acoustic port having an external-facing portion defined in part by a first aperture located on a first housing side and an internal-facing portion defined in part by a first cavity within the housing, the first cavity being coupled to a first side of the element; and a second acoustic port having an external-facing portion defined in part by a second aperture located on the first housing side and an internal-facing portion defined in part by a second cavity within the housing, the second cavity being coupled to a second side of the element. The ports are spaced apart at a distance such that a level of an electrical response by the element to an ambient acoustic noise at 50 dB A-weighted sound pressure level exceeds an internal electrical noise level of the element.

摘要翻译： 麦克风包括具有两个相对侧面的传感元件; 以及壳体，其包括第一声学端口，所述第一声学端口具有部分由位于第一壳体侧上的第一孔限定的外部对置部分和由所述壳体内的第一腔部分限定的内部相对部分，所述第一腔体耦合到 元素的第一面; 以及第二声学端口，其具有部分由位于第一壳体侧上的第二孔限定的面向外部分和由壳体内的第二腔部分限定的内部相对部分，第二腔体耦合到第二侧面 的元素。 这些端口间隔开一定距离，使得该元件对于在50dB A加权声压级的环境声学噪声的电响应的水平超过该元件的内部电噪声水平。