公开(公告)号：US09826327B2

公开(公告)日：2017-11-21

申请号：US15024925

申请日：2014-09-26

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Malcolm James Law ,  Vinay Melkote ,  Rhonda Wilson ,  Simon Plain ,  Andy Jaspar

IPC: H04S3/02 ,  G10L19/018 ,  G10L19/24 ,  G10L19/008

CPC classification number: H04S3/02 ,  G10L19/008 ,  G10L19/018 ,  G10L19/24 ,  H04S2400/03

Abstract: Methods which uses interpolated primitive matrices to decode encoded audio to recover (losslessly) content of a multichannel audio program and/or to recover at least one downmix of such content, and encoding methods for generating such encoded audio. In some embodiments, a decoder performs interpolation on a set of seed primitive matrices to determine interpolated matrices for use in rendering channels of the program. Other aspects are a system or device configured to implement any embodiment of the method.

公开(公告)号：US11509987B2

公开(公告)日：2022-11-22

申请号：US17273915

申请日：2019-09-09

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Glenn N. Dickins ,  Joshua Brandon Lando ,  Andy Jaspar ,  C. Phillip Brown ,  Phillip Williams

IPC: H04R3/02 ,  H04R1/10

Abstract: An audio processing method may involve receiving media input audio data corresponding to a media stream and headphone microphone input audio data, determining a media audio gain for at least one of a plurality of frequency bands of the media input audio data and determining a headphone microphone audio gain for at least one of a plurality of frequency bands of the headphone microphone input audio data. Determining the headphone microphone audio gain may involve determining a feedback risk control value, for at least one of the plurality of frequency bands, corresponding to a risk of headphone feedback between at least one external microphone of a headphone microphone system and at least one headphone speaker and determining a headphone microphone audio gain that will mitigate actual or potential headphone feedback in at least one of the plurality of frequency bands, based at least partly upon the feedback risk control value.