Acoustic perimeter for reducing noise transmitted by a communication device in an open-plan environment

    公开(公告)号:US10567875B2

    公开(公告)日:2020-02-18

    申请号:US16376890

    申请日:2019-04-05

    Applicant: Polycom, Inc.

    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.

    Pairing devices in conference using ultrasonic beacon and subsequent control thereof

    公开(公告)号:US10462424B2

    公开(公告)日:2019-10-29

    申请号:US16105894

    申请日:2018-08-20

    Applicant: Polycom, Inc.

    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.

    Stereoscopic audio to visual sound stage matching in a teleconference

    公开(公告)号:US10447970B1

    公开(公告)日:2019-10-15

    申请号:US16200099

    申请日:2018-11-26

    Applicant: Polycom, Inc.

    Inventor: Peter L. Chu

    Abstract: A system for matching audio-to-video spatial presence in a teleconference, which includes capturing video stream with a camera of a teleconferencing unit at a local endpoint. The teleconferencing unit has a first end and a second end, and a camera located midway between. The system determines a visual stage based on the video stream, and captures audio using microphones on both sides of the camera. The system determines a sound stage based on the audio captured by the microphones, and matches the sound stage to the visual stage, based on the direction of a sound source relative the parameters of the visual stage. The visual stage and matching sound stage can by output for rendering by one or more devices at a second endpoint.

    Method and systems for optimizing bandwidth utilization in a multi-participant full mesh peer-to-peer video session

    公开(公告)号:US10397298B2

    公开(公告)日:2019-08-27

    申请号:US15693261

    申请日:2017-08-31

    Applicant: POLYCOM, INC.

    Inventor: Deep S. Pai

    Abstract: An endpoint optimizes bandwidth by initiating a peer-to-peer conference with a plurality of remote devices, generating a first quality list comprising a first device of the plurality of remote devices from which to receive a first data stream at a first quality level, transmit a request to the first device to receive the first data stream at the first quality level, determining that a second device of the plurality of remote devices is not a member of the first quality list, and in response to determining that the second device of the plurality of remote devices is not a member of the first quality list, transmitting a request to the second device to receive a second data stream at a second quality level.

    Rejecting extraneous touch inputs in an electronic presentation system

    公开(公告)号:US10303302B2

    公开(公告)日:2019-05-28

    申请号:US15615707

    申请日:2017-06-06

    Applicant: Polycom, Inc.

    Inventor: Shu Gao Alain Nimri

    Abstract: A presentation system capable of detecting one or more gestures and contacts on a touch sensitive display. The presentation system can displaying indicia of such contacts, such as when a user writes with a fingertip, and can remove or alter such indicia responsive to other gestures and contacts. The system can accurately distinguish between types of gestures detected, such as between a writing gesture and an erasing gesture, on both large and small touch sensitive displays, thereby obviating the need for a user to make additional selective inputs to transition from one type of gesture to another. The presentation system can distinguish between gestures appropriate for one type of marking and another. The system can distinguish between contacts intended by the user as part of an erasure gesture, and those which are incidentally or accidentally made while the user is writing, drawing or annotating on a display surface.

    Panoramic image placement to minimize full image interference

    公开(公告)号:US10182208B2

    公开(公告)日:2019-01-15

    申请号:US15839476

    申请日:2017-12-12

    Applicant: Polycom, Inc.

    Abstract: An automatic process for producing professional, directed, production crew quality, video for videoconferencing is described. Rule based logic is integrated into an automatic process for producing director quality video for videoconferencing. An automatic process can include a method for composing a display for use in a video system having an active talker video stream and a panoramic view video stream having more than one person in video. The method can include determining a region of interest in a panoramic view video using motion detection and presence sensors, and preparing the panoramic view video by centering the region of interest and by zooming towards the region of interest, based upon the location of persons in the panoramic view video. The method includes determining placement of panoramic view video on a composite display to prevent the panoramic view video overlaying display of an active talker on the active talker video stream.

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