公开(公告)号：US20170302886A1

公开(公告)日：2017-10-19

申请号：US15395492

申请日：2016-12-30

Applicant: Polycom, Inc.

Inventor： Peter L. Chu ,  Yibo Liu

IPC: H04N7/15 ,  G06F3/16 ,  H04M3/56 ,  H04N7/14

CPC classification number: H04N7/15 ,  G06F3/165 ,  H04M3/568 ,  H04N7/142

Abstract: A videoconferencing system has a videoconferencing unit that use portable devices as peripherals for the system. The portable devices obtain near-end audio and send the audio to the videoconferencing unit via a wireless connection. In turn, the videoconferencing unit sends the near-end audio from the loudest portable device along with near-end video to the far-end. The portable devices can control the videoconferencing unit and can initially establish the videoconference by connecting with the far-end and then transferring operations to the videoconferencing unit. To deal with acoustic coupling between the unit's loudspeaker and the portable device's microphone, the unit uses an echo canceller that is compensated for differences in the clocks used in the A/D and D/A converters of the loudspeaker and microphone.

公开(公告)号：US09237238B2

公开(公告)日：2016-01-12

申请号：US14339244

申请日：2014-07-23

Applicant: Polycom, Inc.

Inventor： Peter L. Chu ,  Yibo Liu ,  Uri Avni ,  Ami Noy

IPC: H04M3/42 ,  H04M11/00 ,  H04M1/00 ,  H04L12/16 ,  H04Q11/00 ,  H04M3/56

CPC classification number: H04M3/568 ,  H04M3/56 ,  H04M2201/14

Abstract: A conference apparatus reduces or eliminates noise in audio for endpoints in a conference. Endpoints in the conference are designated as a primary talker and as secondary talkers. Audio for the endpoints is processed with speech detectors to characterize the audio as speech or not and to determine energy levels of the audio. As the audio is written to buffers and then read from the buffers, decisions for the gain settings of faders for read audio of the endpoints being combined in the speech selective mix. In addition, the conference apparatus can mitigate the effects of a possible speech collision that may occur during the conference between endpoints.

Abstract translation: 会议设备减少或消除会议中端点的音频噪声。 会议的终点被指定为主要讲话者，也被指定为次要讲话者。 使用语音检测器处理端点的音频，以将音频表征为语音，并且确定音频的能级。 当音频被写入缓冲器然后从缓冲器读取时，用于在语音选择性混合中组合端点的读取音频的推子的增益设置的决定。 此外，会议装置可以减轻可能在端点之间的会议期间可能出现的语音冲突的影响。

公开(公告)号：US20150208033A1

公开(公告)日：2015-07-23

申请号：US14673477

申请日：2015-03-30

Applicant: Polycom, Inc.

Inventor： Peter L. Chu ,  Yibo Liu

IPC: H04N7/15 ,  G06F3/16

CPC classification number: H04N7/15 ,  G06F3/165 ,  H04M3/568 ,  H04N7/142

Abstract: A videoconferencing system has a videoconferencing unit that use portable devices as peripherals for the system. The portable devices obtain near-end audio and send the audio to the videoconferencing unit via a wireless connection. In turn, the videoconferencing unit sends the near-end audio from the loudest portable device along with near-end video to the far-end. The portable devices can control the videoconferencing unit and can initially establish the videoconference by connecting with the far-end and then transferring operations to the videoconferencing unit. To deal with acoustic coupling between the unit's loudspeaker and the portable device's microphone, the unit uses an echo canceller that is compensated for differences in the clocks used in the ND and D/A converters of the loudspeaker and microphone.

Abstract translation: 视频会议系统具有视频会议单元，其使用便携式设备作为系统的外围设备。 便携式设备获得近端音频，并通过无线连接将音频发送到视频会议单元。 反过来，视频会议单元将最接近便携式设备的近端音频和近端视频一起发送到远端。 便携式设备可以控制视频会议单元，并且可以通过与远端连接然后将操作传送到视频会议单元来最初建立视频会议。 为了处理单元的扬声器和便携式设备的麦克风之间的声耦合，该单元使用回波消除器来补偿扬声器和麦克风的ND和D / A转换器中使用的时钟的差异。

公开(公告)号：US11343469B2

公开(公告)日：2022-05-24

申请号：US17084200

申请日：2020-10-29

Applicant: Polycom, Inc.

Inventor： Peter L. Chu ,  Yibo Liu

IPC: H04N7/14 ,  H04N7/15 ,  H04M3/56 ,  G06F3/16

Abstract: A videoconferencing system has a videoconferencing unit that use portable devices as peripherals for the system. The portable devices obtain near-end audio and send the audio to the videoconferencing unit via a wireless connection. In turn, the videoconferencing unit sends the near-end audio from the loudest portable device along with near-end video to the far-end. The portable devices can control the videoconferencing unit and can initially establish the videoconference by connecting with the far-end and then transferring operations to the videoconferencing unit. To deal with acoustic coupling between the unit's loudspeaker and the portable device's microphone, the unit uses an echo canceller that is compensated for differences in the clocks used in the A/D and D/A converters of the loudspeaker and microphone.

公开(公告)号：US20190253796A1

公开(公告)日：2019-08-15

申请号：US16144202

申请日：2018-09-27

Applicant: Polycom, Inc.

Inventor： Kwan Truong ,  Peter L. Chu

IPC: H04R3/02 ,  H03G5/02 ,  G11B27/031 ,  H03G5/16 ,  H04R27/00

CPC classification number: H04R3/02 ,  G11B27/031 ,  H03G5/025 ,  H03G5/165 ,  H04R27/00 ,  H04R2227/007 ,  H04R2430/03

Abstract: Traditional audio feedback elimination systems may attempt to reduce the effect of the audio feedback by simply scaling down the audio volume of the signal frequencies that are prone to howling. Other traditional feedback elimination systems may also employ adaptive notch filtering to detect and “notch” the so-called “singing” or “howling” frequencies as they occur in real-time. Such devices may typically have several knobs and buttons needing tuning, for example: the number of adaptive parametric equalizers (PEQs) versus fixed PEQs; attack and decay timers; and/or PEQ bandwidth. Rather than removing the singing frequencies with PEQs, the devices described herein attempt to holistically model the feedback audio and then remove the entire feedback signal. Two advantages of the devices described herein are: 1.) the system can operate at a much larger loop-gain (and hence with a much higher loudspeaker volume); and 2) setup is greatly simplified (i.e., no tuning knobs or buttons).

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：US09730255B1

公开(公告)日：2017-08-08

申请号：US15251126

申请日：2016-08-30

Applicant: Polycom, Inc.

Inventor： Peter L. Chu ,  Greg Pelton

IPC: H04W76/02 ,  H04W48/16 ,  H04W48/08 ,  H04W4/00 ,  H04L29/06 ,  H04B11/00 ,  H04N7/15 ,  H04N7/14 ,  H04W84/12

CPC classification number: H04N7/147 ,  H04B11/00 ,  H04L65/1093 ,  H04L65/403 ,  H04N2007/145 ,  H04W4/80 ,  H04W48/10 ,  H04W48/20 ,  H04W76/10 ,  H04W84/12

Abstract: Embodiments disclosed describe room specific pairing of electronic devices using the combination of ultrasonic signal and other wireless means such as Bluetooth. The ultrasonic signal is used to communicate a unique identifier to the electronic devices within the same physical location. The electronic device receiving the ultrasonic signal uses the unique identifier to establish a secure wireless communication with the base station. The wireless communication is then used to communication the configuration information for a second network connection between the base station and the electronic device.

公开(公告)号：US09538136B2

公开(公告)日：2017-01-03

申请号：US14673491

申请日：2015-03-30

Applicant: Polycom, Inc.

Inventor： Peter L. Chu ,  Yibo Liu

IPC: H04N7/14 ,  H04N7/15 ,  H04M3/56 ,  G06F3/16

CPC classification number: H04N7/15 ,  G06F3/165 ,  H04M3/568 ,  H04N7/142

Abstract: A videoconferencing system has a videoconferencing unit that use portable devices as peripherals for the system. The portable devices obtain near-end audio and send the audio to the videoconferencing unit via a wireless connection. In turn, the videoconferencing unit sends the near-end audio from the loudest portable device along with near-end video to the far-end. The portable devices can control the videoconferencing unit and can initially establish the videoconference by connecting with the far-end and then transferring operations to the videoconferencing unit. To deal with acoustic coupling between the unit's loudspeaker and the portable device's microphone, the unit uses an echo canceller that is compensated for differences in the clocks used in the A/D and D/A converters of the loudspeaker and microphone.

Abstract translation: 视频会议系统具有视频会议单元，其使用便携式设备作为系统的外围设备。 便携式设备获得近端音频，并通过无线连接将音频发送到视频会议单元。 反过来，视频会议单元将最接近便携式设备的近端音频和近端视频一起发送到远端。 便携式设备可以控制视频会议单元，并且可以通过与远端连接然后将操作传送到视频会议单元来最初建立视频会议。 为了处理单元的扬声器和便携式设备的麦克风之间的声耦合，该单元使用回波消除器，其补偿扬声器和麦克风的A / D和D / A转换器中使用的时钟的差异。

公开(公告)号：US09282405B2

公开(公告)日：2016-03-08

申请号：US13865001

申请日：2013-04-17

Applicant: Polycom, Inc.

Inventor： Jinwei Feng ,  Peter L. Chu

IPC: H04R3/00 ,  H04N7/15 ,  H04R3/02

CPC classification number: H04R3/005 ,  H04N7/15 ,  H04R3/02 ,  H04R2430/01

Abstract: Methods and systems for cancellation of table noise in a speaker system used for video or audio conferencing are disclosed. Table noise is cancelled by using a vertical microphone array to distinguish the tilt angle of sound received by a microphone. If the sound is close to horizontal, the audio is muted. If the sound is above a given angle from horizontal, it is not muted, as this indicates a person speaking. This eliminates paper rustling, keyboard clicks and the like.

Abstract translation: 公开了用于视频或音频会议的扬声器系统中用于消除表格噪声的方法和系统。 通过使用垂直麦克风阵列来消除麦克风接收的声音的倾斜角来消除表噪声。 如果声音接近水平，则音频静音。 如果声音高于水平的给定角度，则不会静音，因为这表示一个人在说话。 这消除了纸沙沙声，键盘敲击等。

公开(公告)号：US20150365762A1

公开(公告)日：2015-12-17

申请号：US14304903

申请日：2014-06-14

Applicant: Polycom, Inc.

Inventor： Kwan K. Truon ,  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.

Abstract translation: 在开放式办公环境中由主要通信设备发送的远场噪声的量通过在主设备周围定义参考麦克风的声学周长来减少。 参考麦克风在主设备附近产生包括远场噪声的参考音频输入。 主设备产生包括主扬声器的声音以及背景噪声的主音频输入。 将参考音频输入与主音频输入进行比较，以识别主音频信号的背景噪声部分。 噪声降低算法抑制主音频信号中识别的背景噪声。 限定声学周界的一个或多个参考麦克风可以包括在放置在主桌面电话附近的单独的麦克风设备中，在其他附近的桌面电话设备内的麦克风，或两种类型的设备的组合。