公开(公告)号：US20240296822A1

公开(公告)日：2024-09-05

申请号：US18275800

申请日：2022-02-07

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Benjamin John SOUTHWELL ,  David GUNAWAN ,  Yin-Lee HO ,  Senaka Chandranath SAMARASEKERA

IPC: G10K11/178

CPC classification number: G10K11/17823 ,  G10K11/17873 ,  G10K2210/3027 ,  G10K2210/505

Abstract: Some implementations involve receiving location information for each of a plurality of audio devices in an audio environment, generating, based at least in part on the location information, rendering information for a plurality of audio devices in an audio environment and determining, based at least on part on the rendering information, a plurality of echo reference metrics. Each echo reference metric may correspond to audio data reproduced by one or more audio devices of the plurality of audio devices. The rendering information may include a matrix of loudspeaker activations. Some examples involve making, based at least in part on the echo reference metrics, an importance estimation for each of a plurality of echo references, selecting, based at least in part on the importance estimation, one or more echo references and providing them to at least one echo management system for canceling or suppressing echoes.

公开(公告)号：US20230421507A1

公开(公告)日：2023-12-28

申请号：US18252998

申请日：2021-11-17

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Shanush PREMA THASARATHAN ,  Ning WANG ,  Senaka Chandranath SAMARASEKERA

IPC: H04L47/283 ,  H04L43/106 ,  H04L41/147

CPC classification number: H04L47/283 ,  H04L43/106 ,  H04L41/147

Abstract: Embodiments are disclosed for timestamp smoothing to remove jitter. In some embodiments, a method of smoothing timestamps associated with audio packets comprises: receiving, using at least one processor, a series of input timestamps for audio packets and their respective packet lengths; estimating, using the at least one processor, an initial timestamp based on the series of input timestamps, the packet lengths and a sample time; calculating, using the at least one processor, a predicted timestamp based on the estimated initial timestamp; and smoothing, using the at least one processor, the predicted timestamp.