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1. 发明授权

US07123727B2 Adaptive close-talking differential microphone array 有权
公开(公告)号：US07123727B2
公开(公告)日：2006-10-17
申请号：US09999380
申请日：2001-10-30
申请人： Gary W. Elko , Heinz Teutsch
发明人： Gary W. Elko , Heinz Teutsch
IPC分类号： H04R3/00
CPC分类号： H04R3/005 , H04R1/406 , H04R29/006
摘要： A method and apparatus for providing a differential microphone with a desired frequency response are disclosed. The desired frequency response is provided by operation of a filter, having an adjustable frequency response, coupled to the microphone. The frequency response of the filter is set by operation of a controller, also coupled to the microphone, based on signals received from the microphone. The desired frequency response may be determined based upon the orientation angle and the distance between the microphone and a source of sound. The frequency response of the filter may comprise the substantial inverse of the frequency response of the microphone to provide a flat response. In a preferred embodiment, the gain of the differential microphone is adjusted so that the output level is effectively independent of microphone position relative to the source. In particular embodiments, the controller may determine, based on the distance from the sound source, whether to operate the differential microphone in a nearfield mode of operation or a farfield mode of operation.

2. 发明授权

US06584203B2 Second-order adaptive differential microphone array 失效
标题翻译：二阶自适应差分麦克风阵列
公开(公告)号：US06584203B2
公开(公告)日：2003-06-24
申请号：US09999298
申请日：2001-10-30
申请人： Gary W. Elko , Heinz Teutsch
发明人： Gary W. Elko , Heinz Teutsch
IPC分类号： H04R300
CPC分类号： H04R1/406 , H04R3/005 , H04R29/00 , H04R29/005 , H04R2410/01 , H04R2430/21
摘要： A second-order adaptive differential microphone array (ADMA) has two first-order elements (e.g., 802 and 804 of FIG. 8), each configured to convert a received audio signal into an electrical signal. The ADMA also has (i) two delay nodes (e.g., 806 and 808) configured to delay the electrical signals from the first-order elements and (ii) two subtraction nodes (e.g., 810 and 812) configured to generate forward-facing and backward-facing cardioid signals based on differences between the electrical signals and the delayed electrical signals. The ADMA also has (i) an amplifier (e.g., 814) configured to amplify the backward-facing cardioid signal by a gain parameter; (ii) a third subtraction node (e.g., 816) configured to generate a difference signal based on a difference between the forward-facing cardioid signal and the amplified backward-facing cardioid signal; and (iii) a lowpass filter (e.g., 818) configured to filter the difference signal from the third subtraction node to generate the output signal for the second-order ADMA. The gain parameter for the amplifier can be adaptively adjusted to move a null in the back half plane of the ADMA to track a moving noise source. In a subband implementation, a different gain parameter can be adaptively adjusted to move a different null in the back half plane to track a different moving noise source for each different frequency subband.
摘要翻译：二阶自适应差分麦克风阵列（ADMA）具有两个一阶元件（例如，图8的802和804），每个元件被配置为将接收到的音频信号转换成电信号。 ADMA还具有（i）被配置为延迟来自一阶元件的电信号的两个延迟节点（例如，806和808），以及（ii）被配置为产生向前和向后的两个减法节点（例如，810和812）基于电信号和延迟的电信号之间的差异的向后的心形信号。 ADMA还具有（i）被配置为通过增益参数放大后向心形信号的放大器（例如814）（ii）第三减法节点（例如，816），被配置为基于前向心形信号和放大的后向心形信号之间的差异产生差分信号; 以及（iii）低通滤波器（例如，818），被配置为对来自第三减法节点的差分信号进行滤波，以产生用于二阶ADMA的输出信号。可以自适应地调节放大器的增益参数，以在ADMA的后半平面移动零点，以跟踪移动噪声源。在子带实现中，可以自适应地调整不同的增益参数以在后半平面中移动不同的零，以跟踪每个不同频率子带的不同移动噪声源。

3. 发明授权

US08923530B2 Speakerphone feedback attenuation 有权
标题翻译：扬声器反馈衰减
公开(公告)号：US08923530B2
公开(公告)日：2014-12-30
申请号：US12422087
申请日：2009-04-10
申请人： Eric John Diethorn , Heinz Teutsch
发明人： Eric John Diethorn , Heinz Teutsch
IPC分类号： H04B15/00 , H04M9/00 , H04M9/08 , H04M1/00 , H04M1/60 , H04M1/20 , H04M1/62
CPC分类号： H04M1/6033 , H04M1/20 , H04M1/62
摘要： A method is disclosed for acoustic feedback attenuation at a telecommunications terminal. A speakerphone equipped with a loudspeaker and two microphones is featured. Signals from the two microphones are subjected to a calibration stage and then to a runtime stage. The purpose of the calibration stage is to match the microphones to each other by advantageously using both magnitude and phase equalization across the frequency spectrum of the microphones. During the runtime stage, the microphones monitor the ambient sounds received from sound sources, such as the speakerphone's users and the loudspeaker itself, during a conference call. The speakerphone applies the generated set of filter coefficients to the optimized microphone's signals. By combining the signal from the reference microphone with the filtered signal from the optimized microphone, the speakerphone is able to attenuate the sounds from the loudspeaker that would otherwise be transmitted back to other conference call participants.
摘要翻译：公开了一种在电信终端处的声反馈衰减的方法。配有扬声器和两个麦克风的扬声器功能。来自两个麦克风的信号经受校准阶段，然后进行运行阶段。校准阶段的目的是通过有利地使用麦克风的频谱上的幅度和相位均衡来使麦克风相互匹配。在运行阶段期间，麦克风在电话会议期间监视从声源（例如扬声器用户和扬声器本身）接收的环境声音。扬声器将所生成的滤波器系数集合应用于优化的麦克风信号。通过将来自参考麦克风的信号与来自优化的麦克风的滤波信号进行组合，扬声器电话能够衰减来自扬声器的声音，否则该声音将被发送回其他电话会议参与者。

4. 发明申请

US20130250786A1 SYSTEM AND METHOD FOR END-TO-END CALL QUALITY INDICATION 有权
标题翻译：用于端到端呼叫质量指示的系统和方法
公开(公告)号：US20130250786A1
公开(公告)日：2013-09-26
申请号：US13606853
申请日：2012-09-07
申请人： Mehmet Balasaygun , Jean Meloche , Heinz Teutsch , Shalini Yajnik
发明人： Mehmet Balasaygun , Jean Meloche , Heinz Teutsch , Shalini Yajnik
IPC分类号： H04L12/26
CPC分类号： H04L65/608 , H04L41/22 , H04L41/5032 , H04L43/06 , H04L43/062 , H04L43/0829 , H04L43/0852
摘要： Disclosed herein are systems, methods, and non-transitory computer-readable storage media for generating an end-to-end quality indication associated with a communication session. Based on a real-time transport control protocol message, the system identifies a media path associated with a communication session. Next, the system determines a respective media leg quality for a plurality of media legs in the media path. Based on the respective media leg quality, the system then determines a media path quality. The system can also generate a media quality indication based on the media path quality, and display the media quality indication.
摘要翻译：这里公开的是用于生成与通信会话相关联的端到端质量指示的系统，方法和非暂时计算机可读存储介质。基于实时传输控制协议消息，系统识别与通信会话相关联的媒体路径。接下来，系统确定媒体路径中的多个媒体支路的相应的媒体支路质量。基于相应的媒体支路质量，系统然后确定媒体路径质量。该系统还可以基于媒体路径质量生成媒体质量指示，并显示媒体质量指示。

5. 发明申请

US20150304288A1 SYSTEM AND METHOD FOR END-TO-END ENCRYPTION AND SECURITY INDICATION AT AN ENDPOINT 有权
标题翻译：在端点处进行端到端加密和安全指示的系统和方法
公开(公告)号：US20150304288A1
公开(公告)日：2015-10-22
申请号：US13571098
申请日：2012-08-09
申请人： Mehmet BALASAYGUN , Jean Meloche , Heinz Teutsch , Shalini Yajnik
发明人： Mehmet BALASAYGUN , Jean Meloche , Heinz Teutsch , Shalini Yajnik
IPC分类号： H04L29/06
CPC分类号： H04L63/0464 , H04L63/166 , H04L63/20
摘要： Disclosed herein are systems, methods, and non-transitory computer-readable storage media for implementing real-time transport control protocol to obtain an end-to-end encryption and security status of a communication session. The system collects real-time transport control protocol messages associated with a communication session, wherein the real-time transport control protocol messages are generated by devices in the communication session, and wherein the real-time transport control protocol messages include security information associated with the communication session. Then, based on the real-time transport control protocol messages, the system determines a security status associated with the communication session. The system can also generate an indication of the security status associated with the communication session. Further, the system can generate an indication of the security status of a communication session on a per participant basis.
摘要翻译：这里公开了用于实现实时传输控制协议以获得通信会话的端到端加密和安全状态的系统，方法和非暂时的计算机可读存储介质。系统收集与通信会话相关联的实时传输控制协议消息，其中实时传输控制协议消息由通信会话中的设备生成，并且其中实时传输控制协议消息包括与沟通会话然后，基于实时传输控制协议消息，系统确定与通信会话相关联的安全状态。系统还可以生成与通信会话相关联的安全状态的指示。此外，系统可以基于每个参与者生成通信会话的安全状态的指示。

6. 发明授权

US08645142B2 System and method for method for improving speech intelligibility of voice calls using common speech codecs 有权
标题翻译：使用通用语音编解码器提高语音通话语音清晰度的系统和方法
公开(公告)号：US08645142B2
公开(公告)日：2014-02-04
申请号：US13430936
申请日：2012-03-27
申请人： Heinz Teutsch , John Cornelius Lynch
发明人： Heinz Teutsch , John Cornelius Lynch
IPC分类号： G10L13/02
CPC分类号： G10L21/0364
摘要： System and method to improve intelligibility of coded speech, the method including: receiving an encoded speech signal from a network; extracting an encoded media data stream and one or more control data packets from the encoded speech signal; decoding the encoded media data stream to produce a decoded speech signal; boosting an upper spectral portion of the decoded speech signal to produce a boosted speech signal; and outputting the boosted speech signal. In another embodiment, the method may include: receiving an uncoded speech signal; processing the uncoded speech signal, wherein the processing comprises generating an unencoded data stream from the uncoded speech signal; boosting an upper spectral portion of the unencoded data stream to produce a boosted speech signal; encoding the boosted speech signal to produce an encoded speech signal; and outputting the boosted speech signal.
摘要翻译：用于提高编码语音的可懂度的系统和方法，所述方法包括：从网络接收编码语音信号; 从编码的语音信号中提取编码的媒体数据流和一个或多个控制数据分组; 解码编码的媒体数据流以产生解码的语音信号; 升高解码语音信号的上频谱部分以产生升高的语音信号; 并输出升压语音信号。在另一个实施例中，该方法可以包括：接收未编码的语音信号; 处理所述未编码语音信号，其中所述处理包括从所述未编码语音信号生成未编码数据流; 提升未经编码的数据流的高频谱部分以产生增强的语音信号; 对增强的语音信号进行编码以产生编码语音信号; 并输出升压语音信号。

7. 发明申请

US20100260351A1 Speakerphone Feedback Attenuation 有权
标题翻译：扬声器反馈衰减
公开(公告)号：US20100260351A1
公开(公告)日：2010-10-14
申请号：US12422087
申请日：2009-04-10
申请人： Eric John Diethorn , Heinz Teutsch
发明人： Eric John Diethorn , Heinz Teutsch
IPC分类号： H04B15/00
CPC分类号： H04M1/6033 , H04M1/20 , H04M1/62
摘要： A method is disclosed for acoustic feedback attenuation at a telecommunications terminal. A speakerphone equipped with a loudspeaker and two microphones is featured. Signals from the two microphones are subjected to a calibration stage and then to a runtime stage. The purpose of the calibration stage is to match the microphones to each other by advantageously using both magnitude and phase equalization across the frequency spectrum of the microphones. During the runtime stage, the microphones monitor the ambient sounds received from sound sources, such as the speakerphone's users and the loudspeaker itself, during a conference call. The speakerphone applies the generated set of filter coefficients to the optimized microphone's signals. By combining the signal from the reference microphone with the filtered signal from the optimized microphone, the speakerphone is able to attenuate the sounds from the loudspeaker that would otherwise be transmitted back to other conference call participants.
摘要翻译：公开了一种在电信终端处的声反馈衰减的方法。配有扬声器和两个麦克风的扬声器功能。来自两个麦克风的信号经受校准阶段，然后进行运行阶段。校准阶段的目的是通过有利地使用麦克风的频谱上的幅度和相位均衡来使麦克风相互匹配。在运行阶段期间，麦克风在电话会议期间监视从声源（例如扬声器用户和扬声器本身）接收的环境声音。扬声器将所生成的滤波器系数集合应用于优化的麦克风信号。通过将来自参考麦克风的信号与来自优化的麦克风的滤波信号进行组合，扬声器电话能够衰减来自扬声器的声音，否则该声音将被发送回其他电话会议参与者。

8. 发明授权

US09860296B2 System and method for end-to-end call quality indication 有权
公开(公告)号：US09860296B2
公开(公告)日：2018-01-02
申请号：US13606853
申请日：2012-09-07
申请人： Mehmet Balasaygun , Jean Meloche , Heinz Teutsch , Shalini Yajnik
发明人： Mehmet Balasaygun , Jean Meloche , Heinz Teutsch , Shalini Yajnik
IPC分类号： H04L12/66 , H04L29/06 , H04L12/24 , H04L12/26
CPC分类号： H04L65/608 , H04L41/22 , H04L41/5032 , H04L43/06 , H04L43/062 , H04L43/0829 , H04L43/0852
摘要： Disclosed herein are systems, methods, and non-transitory computer-readable storage media for generating an end-to-end quality indication associated with a communication session. Based on a real-time transport control protocol message, the system identifies a media path associated with a communication session. Next, the system determines a respective media leg quality for a plurality of media legs in the media path. Based on the respective media leg quality, the system then determines a media path quality. The system can also generate a media quality indication based on the media path quality, and display the media quality indication.

9. 发明授权

US09094496B2 System and method for stereophonic acoustic echo cancellation 有权
标题翻译：立体声回声消除的系统和方法
公开(公告)号：US09094496B2
公开(公告)日：2015-07-28
申请号：US12896639
申请日：2010-10-01
申请人： Heinz Teutsch
发明人： Heinz Teutsch
IPC分类号： H04R5/00 , H04M9/08 , H04R3/00
CPC分类号： H04M9/082 , H04R3/002
摘要： Disclosed herein are systems, methods, and non-transitory computer-readable storage media for stereophonic acoustic echo cancellation. The method includes collecting, at a same time, a first audio sample of an audio source from a first omnidirectional microphone and a second audio sample of the audio source from a second omnidirectional microphone. The method includes delaying the second audio sample by a first amount of time to yield a delayed second audio sample and combining the delayed second audio sample with the first audio sample to produce a first channel, then delaying the first audio sample by a second amount of time to yield a delayed first audio sample and combining the delayed first audio sample with the second audio sample to produce a second channel. Then the method includes outputting the first channel and the second channel as a stereo audio signal of the audio source.
摘要翻译：本文公开了用于立体声回声消除的系统，方法和非暂时的计算机可读存储介质。该方法包括同时从第二全向麦克风收集来自第一全向麦克风的音频源的第一音频样本和来自第二全向麦克风的音频源的第二音频样本。该方法包括将第二音频样本延迟第一时间量以产生延迟的第二音频采样并将延迟的第二音频采样与第一音频采样相组合以产生第一通道，然后将第一音频采样延迟第二音量时间以产生延迟的第一音频采样并将延迟的第一音频采样与第二音频采样相结合以产生第二通道。然后该方法包括输出第一通道和第二通道作为音频源的立体声音频信号。

10. 发明申请

US20130250779A1 SYSTEM AND METHOD FOR END-TO-END RTCP 有权
标题翻译：端到端RTCP的系统和方法
公开(公告)号：US20130250779A1
公开(公告)日：2013-09-26
申请号：US13485245
申请日：2012-05-31
申请人： Jean Meloche , Heinz Teutsch , Shalini Yajnik , Mehmet Balasaygun
发明人： Jean Meloche , Heinz Teutsch , Shalini Yajnik , Mehmet Balasaygun
IPC分类号： H04L12/26 , H04L12/24
CPC分类号： H04L41/5067 , H04L41/0681 , H04L41/5032 , H04L41/5035 , H04L43/06 , H04L43/0829 , H04L43/0852 , H04L43/087 , H04L43/12 , H04L65/608
摘要： Systems, methods, and non-transitory computer-readable storage media for implementing real-time transport control protocol to obtain end-to-end session information. The system receives a real-time transport control protocol extension associated with a real-time transport control protocol packet in a communication session, wherein the real-time transport control protocol extension comprises an instruction for transmitting real-time transport control protocol data based on a triggering event, and wherein the real-time transport control protocol extension is configured to propagate along the communication session. Next, in response to the triggering event, the system transmits the real-time transport control protocol data to an address defined by the instruction as a destination address for receiving information associated with the triggering event.
摘要翻译：用于实现实时传输控制协议以获得端到端会话信息的系统，方法和非暂时计算机可读存储介质。该系统在通信会话中接收与实时传输控制协议分组相关联的实时传输控制协议扩展，其中实时传输控制协议扩展包括用于基于传输控制协议数据传输实时传输控制协议数据的指令触发事件，并且其中所述实时传输控制协议扩展被配置为沿所述通信会话传播。接下来，响应于触发事件，系统将实时传输控制协议数据发送到由指令定义的地址作为用于接收与触发事件相关联的信息的目的地地址。

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