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.

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

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

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：US20200029154A1

公开(公告)日：2020-01-23

申请号：US16376890

申请日：2019-04-05

Applicant: Polycom, Inc.

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

IPC: H04R3/04 ,  H04R3/00 ,  H04R5/04 ,  H04R5/027 ,  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：US09924252B2

公开(公告)日：2018-03-20

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: H04R5/02 ,  H04R1/02 ,  H04N7/14 ,  H04N7/15 ,  H04R5/04 ,  H04R27/00 ,  H04S1/00 ,  H04S3/00

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.