公开(公告)号：US20190238978A1

公开(公告)日：2019-08-01

申请号：US16376904

申请日：2019-04-05

Applicant: Polycom, Inc.

Inventor： Kwan K. Truong ,  Peter L. Chu ,  Steven L. Potts

IPC: H04R3/00

CPC classification number: H04R3/005 ,  G10L21/0208 ,  G10L2021/02165 ,  G10L2021/02166 ,  H04R27/00 ,  H04R2227/001 ,  H04R2410/05

Abstract: The amount of far-field noise transmitted by a primary communication device in an open-plan office environment is reduced by defining an acoustic perimeter of reference microphones around the primary device. Reference microphones generate a reference audio input including far-field noise in the proximity of the primary device. The primary device generates a main audio input including the voice of the primary speaker as well as background noise. Reference audio input is compared to main audio input to identify the background noise portion of the main audio signal. A noise reduction algorithm suppresses the identified background noise in the main audio signal. The one or more reference microphones defining the acoustic perimeter may be included in separate microphone devices placed in proximity to the main desktop phone, microphones within other nearby desktop telephone devices, or a combination of both types of devices.

公开(公告)号：US20140148224A1

公开(公告)日：2014-05-29

申请号：US13684526

申请日：2012-11-24

Applicant: Polycom, Inc.

Inventor： Kwan K. Truong ,  Peter Chu ,  Steve Potts ,  Erwin Goesnar

IPC: H04M9/08

CPC classification number: H04M9/085

Abstract: Noise suppression systems and methods suppress far field noise in a microphone signal. A telephony system includes a main microphone and a reference microphone. In one example, the main microphone and the reference microphone can be located in the same device. In another example, the main microphone and the reference microphone can be located in two separate devices. A DSP can use the reference microphone signal to carry out suppression of far field noise in the main microphone signal. In one approach the DSP can determine an estimate of far field noise in the main microphone signal based on a noise estimate of the reference microphone signal and a reference and main microphone coupling estimate, and then subtract the far field noise estimate from the main microphone signal. Alternatively, the DSP can suppress the main microphone signal if it determines that a local talker is inactive.

Abstract translation: 噪声抑制系统和方法抑制麦克风信号中的远场噪声。 电话系统包括主麦克风和参考麦克风。 在一个示例中，主麦克风和参考麦克风可以位于同一设备中。 在另一示例中，主麦克风和参考麦克风可以位于两个单独的设备中。 DSP可以使用参考麦克风信号来对主麦克风信号中的远场噪声进行抑制。 在一种方法中，DSP可以基于参考麦克风信号和参考和主麦克风耦合估计的噪声估计来确定主麦克风信号中的远场噪声的估计，然后从主麦克风信号中减去远场噪声估计 。 或者，如果确定本地讲话者不活动，则DSP可以抑制主麦克风信号。

公开(公告)号：US08989815B2

公开(公告)日：2015-03-24

申请号：US13684526

申请日：2012-11-24

Applicant: Polycom, Inc.

Inventor： Kwan K. Truong ,  Peter Chu ,  Steve Potts ,  Erwin Goesnar

IPC: H04M1/00 ,  H04B1/38 ,  H04M9/08

CPC classification number: H04M9/085

Abstract: Noise suppression systems and methods suppress far field noise in a microphone signal. A telephony system includes a main microphone and a reference microphone. In one example, the main microphone and the reference microphone can be located in the same device. In another example, the main microphone and the reference microphone can be located in two separate devices. A DSP can use the reference microphone signal to carry out suppression of far field noise in the main microphone signal. In one approach the DSP can determine an estimate of far field noise in the main microphone signal based on a noise estimate of the reference microphone signal and a reference and main microphone coupling estimate, and then subtract the far field noise estimate from the main microphone signal. Alternatively, the DSP can suppress the main microphone signal if it determines that a local talker is inactive.

Abstract translation: 噪声抑制系统和方法抑制麦克风信号中的远场噪声。 电话系统包括主麦克风和参考麦克风。 在一个示例中，主麦克风和参考麦克风可以位于同一设备中。 在另一示例中，主麦克风和参考麦克风可以位于两个单独的设备中。 DSP可以使用参考麦克风信号来对主麦克风信号中的远场噪声进行抑制。 在一种方法中，DSP可以基于参考麦克风信号和参考和主麦克风耦合估计的噪声估计来确定主麦克风信号中的远场噪声的估计，然后从主麦克风信号中减去远场噪声估计 。 或者，如果确定本地讲话者不活动，则DSP可以抑制主麦克风信号。

公开(公告)号：US11228834B2

公开(公告)日：2022-01-18

申请号：US17085581

申请日：2020-10-30

Applicant: Polycom, Inc.

Inventor： Kwan K. Truong ,  Peter L. Chu ,  Steven L. Potts ,  Eric Elias

IPC: H04R3/00 ,  G10L21/0208 ,  G10L21/0216 ,  H04R3/04 ,  H04R5/027 ,  H04R5/04 ,  H04R27/00

Abstract: The amount of far-field noise transmitted by a primary communication device in an open-plan office environment is reduced by defining an acoustic perimeter of reference microphones around the primary device. Reference microphones generate a reference audio input including far-field noise in the proximity of the primary device. The primary device generates a main audio input including the voice of the primary speaker as well as background noise. Reference audio input is compared to main audio input to identify the background noise portion of the main audio signal. A noise reduction algorithm suppresses the identified background noise in the main audio signal. The one or more reference microphones defining the acoustic perimeter may be included in separate microphone devices placed in proximity to the main desktop phone, microphones within other nearby desktop telephone devices, or a combination of both types of devices.

公开(公告)号：US20140270302A1

公开(公告)日：2014-09-18

申请号：US14201348

申请日：2014-03-07

Applicant: POLYCOM, INC.

Inventor： Michael A. Pocino ,  Kwan K. Truong ,  Jinwei Feng ,  James M. Sharp

IPC: H04R1/02 ,  H04N7/15

CPC classification number: H04R1/028 ,  H04N7/142 ,  H04N7/15 ,  H04R5/04 ,  H04R27/00 ,  H04R2499/15 ,  H04S1/00 ,  H04S3/00 ,  H04S2400/15

Abstract: A videoconferencing system has a plurality of displays arranged side-by-side. Top loudspeakers are arranged adjacent the tops of the displays, and bottom loudspeakers are arranged adjacent the bottoms of the displays. A control unit operatively coupled to the displays and the loudspeakers routes video to each of the displays and routes audio corresponding to each display to any of the top and bottom loudspeakers arranged adjacent the display. Thus, the top and bottom loudspeakers form a vertical pair of loudspeakers that output the corresponding audio for its respective display. In this way, the audio for the video of a given display is perceived by participants to originate from the center of the given display. If one of the loudspeakers is not provided, gain setting and mixing between adjacent sets of loudspeakers can produce a virtual loudspeaker for the one that is missing.

Abstract translation: 视频会议系统具有并排布置的多个显示器。 顶部扬声器布置在显示器的顶部附近，并且底部扬声器布置在显示器的底部附近。 可操作地耦合到显示器和扬声器的控制单元将视频路由到每个显示器，并将对应于每个显示器的音频路由到与显示器相邻布置的顶部和底部扬声器中的任一个。 因此，顶部和底部扬声器形成垂直的一对扬声器，其输出相应的音频以用于其相应的显示器。 以这种方式，给定显示器的视频的音频被参与者感知为源自给定显示器的中心。 如果没有提供其中一个扬声器，相邻扬声器组之间的增益设置和混音可以为缺失的扬声器产生虚拟扬声器。

公开(公告)号：US10856077B2

公开(公告)日：2020-12-01

申请号：US16927667

申请日：2020-07-13

Applicant: Polycom, Inc.

Inventor： Kwan K. Truong ,  Peter L. Chu ,  Steven L. Potts ,  Eric Elias

IPC: H04R3/00 ,  G10L21/0208 ,  G10L21/0216 ,  H04R3/04 ,  H04R5/027 ,  H04R5/04 ,  H04R27/00

Abstract: The amount of far-field noise transmitted by a primary communication device in an open-plan office environment is reduced by defining an acoustic perimeter of reference microphones around the primary device. Reference microphones generate a reference audio input including far-field noise in the proximity of the primary device. The primary device generates a main audio input including the voice of the primary speaker as well as background noise. Reference audio input is compared to main audio input to identify the background noise portion of the main audio signal. A noise reduction algorithm suppresses the identified background noise in the main audio signal. The one or more reference microphones defining the acoustic perimeter may be included in separate microphone devices placed in proximity to the main desktop phone, microphones within other nearby desktop telephone devices, or a combination of both types of devices.

公开(公告)号：US20200344546A1

公开(公告)日：2020-10-29

申请号：US16927667

申请日：2020-07-13

Applicant: Polycom, Inc.

Inventor： Kwan K. Truong ,  Peter L. Chu ,  Steven L. Potts ,  Eric Elias

IPC: H04R3/00 ,  G10L21/0208 ,  G10L21/0216 ,  H04R3/04 ,  H04R5/027 ,  H04R5/04

Abstract: The amount of far-field noise transmitted by a primary communication device in an open-plan office environment is reduced by defining an acoustic perimeter of reference microphones around the primary device. Reference microphones generate a reference audio input including far-field noise in the proximity of the primary device. The primary device generates a main audio input including the voice of the primary speaker as well as background noise. Reference audio input is compared to main audio input to identify the background noise portion of the main audio signal. A noise reduction algorithm suppresses the identified background noise in the main audio signal. The one or more reference microphones defining the acoustic perimeter may be included in separate microphone devices placed in proximity to the main desktop phone, microphones within other nearby desktop telephone devices, or a combination of both types of devices.

公开(公告)号：US10555080B2

公开(公告)日：2020-02-04

申请号：US16376904

申请日：2019-04-05

Applicant: Polycom, Inc.

Inventor： Kwan K. Truong ,  Peter L. Chu ,  Steven L. Potts ,  Eric Elias

IPC: H04R3/00 ,  H04R27/00 ,  G10L21/0216

Abstract: The amount of far-field noise transmitted by a primary communication device in an open-plan office environment is reduced by defining an acoustic perimeter of reference microphones around the primary device. Reference microphones generate a reference audio input including far-field noise in the proximity of the primary device. The primary device generates a main audio input including the voice of the primary speaker as well as background noise. Reference audio input is compared to main audio input to identify the background noise portion of the main audio signal. A noise reduction algorithm suppresses the identified background noise in the main audio signal. The one or more reference microphones defining the acoustic perimeter may be included in separate microphone devices placed in proximity to the main desktop phone, microphones within other nearby desktop telephone devices, or a combination of both types of devices.

公开(公告)号：US20210136490A1

公开(公告)日：2021-05-06

申请号：US17085581

申请日：2020-10-30

Applicant: Polycom, Inc.

Inventor： Kwan K. Truong ,  Peter L. Chu ,  Steven L. Potts ,  Eric Elias

IPC: H04R3/00 ,  G10L21/0208 ,  G10L21/0216 ,  H04R3/04 ,  H04R5/027 ,  H04R5/04

Abstract: The amount of far-field noise transmitted by a primary communication device in an open-plan office environment is reduced by defining an acoustic perimeter of reference microphones around the primary device. Reference microphones generate a reference audio input including far-field noise in the proximity of the primary device. The primary device generates a main audio input including the voice of the primary speaker as well as background noise. Reference audio input is compared to main audio input to identify the background noise portion of the main audio signal. A noise reduction algorithm suppresses the identified background noise in the main audio signal. The one or more reference microphones defining the acoustic perimeter may be included in separate microphone devices placed in proximity to the main desktop phone, microphones within other nearby desktop telephone devices, or a combination of both types of devices.

公开(公告)号：US10750282B2

公开(公告)日：2020-08-18

申请号：US16723517

申请日：2019-12-20

Applicant: Polycom, Inc.

Inventor： Kwan K. Truong ,  Peter L. Chu ,  Steven L. Potts ,  Eric Elias

IPC: H04R3/00 ,  G10L21/0208 ,  G10L21/0216 ,  H04R3/04 ,  H04R5/027 ,  H04R5/04 ,  H04R27/00

Abstract: The amount of far-field noise transmitted by a primary communication device in an open-plan office environment is reduced by defining an acoustic perimeter of reference microphones around the primary device. Reference microphones generate a reference audio input including far-field noise in the proximity of the primary device. The primary device generates a main audio input including the voice of the primary speaker as well as background noise. Reference audio input is compared to main audio input to identify the background noise portion of the main audio signal. A noise reduction algorithm suppresses the identified background noise in the main audio signal. The one or more reference microphones defining the acoustic perimeter may be included in separate microphone devices placed in proximity to the main desktop phone, microphones within other nearby desktop telephone devices, or a combination of both types of devices.