公开(公告)号：US20220197592A1

公开(公告)日：2022-06-23

申请号：US17601199

申请日：2020-04-03

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Glenn N. DICKINS ,  Feng DENG ,  Michael ECKERT ,  Craig JOHNSTON ,  Paul HOLMBERG

IPC: G06F3/16 ,  H04M3/56 ,  H04L65/403

Abstract: A communication system, method, and computer-readable medium therefor comprise a media server configured to receive a plurality of audio streams from a corresponding plurality of client devices, the media server including circuitry configured to rank the plurality of audio streams based on a predetermined metric, group a first portion of the plurality of audio streams into a first set, the first portion of the plurality of audio streams being the N highest-ranked audio streams, group a second portion of the plurality of audio streams into a second set, the second portion of the plurality of audio streams being the M lowest-ranked audio streams, forward respective audio streams of the first set to a receiver device, and discard respective audio streams of the second set, wherein N and M are independent integers.

公开(公告)号：US20210136230A1

公开(公告)日：2021-05-06

申请号：US16640169

申请日：2018-09-27

Applicant: DOLBY LABORATORIES LICENSING CORPORATION

Inventor： Kai LI ,  David GUNAWAN ,  Feng DENG ,  Qianqian FANG

IPC: H04M3/56 ,  G10L25/48

Abstract: The disclosed teleconferencing methods involve detecting a howl state during a teleconference which involves two or more teleconference client locations and a teleconference server. The teleconference server is configured for providing full-duplex audio connectivity between the teleconference client locations. The howl state is a state of acoustic feedback involving two or more teleconference devices in a teleconference client location. Detecting the howl state involves an analysis of both spectral and temporal characteristics of teleconference audio data. The disclosed teleconferencing methods involve determining which client location is causing the howl state and involve mitigating the howl state or sending a howl state detection message.