公开(公告)号：US12112750B2

公开(公告)日：2024-10-08

申请号：US17630895

申请日：2020-07-28

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Mark R. P. Thomas ,  Richard J. Cartwright

IPC: G10L15/22 ,  G06F3/16 ,  G10L15/08 ,  G10L21/0264 ,  H04R1/40 ,  H04R3/00 ,  H04S7/00

CPC classification number: G10L15/22 ,  G06F3/167 ,  G10L15/08 ,  G10L21/0264 ,  H04R1/406 ,  H04R3/005 ,  H04S7/303 ,  G10L2015/223 ,  H04R2430/21

Abstract: A method for estimating a user's location in an environment may involve receiving output signals from each microphone of a plurality of microphones in the environment. At least two microphones of the plurality of microphones may be included in separate devices at separate locations in the environment and the output signals may correspond to a current utterance of a user. The method may involve determining multiple current acoustic features from the output signals of each microphone and applying a classifier to the multiple current acoustic features. Applying the classifier may involve applying a model trained on previously-determined acoustic features derived from a plurality of previous utterances made by the user in a plurality of user zones in the environment. The method may involve determining, based at least in part on output from the classifier, an estimate of the user zone in which the user is currently located.

公开(公告)号：US20240187811A1

公开(公告)日：2024-06-06

申请号：US18327797

申请日：2021-12-02

Applicant: DOLBY LABORATORIES LICENSING CORPORATION ,  DOLBY INTERNATIONAL AB

Inventor： Mark R. P. Thomas ,  Daniel Arteaga ,  Christopher Graham Hines ,  Davide Scaini ,  Benjamin Southwell ,  Avery Bruni ,  Olha Michelle Townsend

IPC: H04S7/00

CPC classification number: H04S7/303 ,  H04S7/307 ,  H04S2400/11 ,  H04S2400/13 ,  H04S2400/15

Abstract: Some methods involve causing a plurality of audio devices in an audio environment to reproduce audio data, each audio device of the plurality of audio devices including at least one loudspeaker and at least one microphone, determining audio device location data including an audio device location for each audio device of the plurality of audio devices and obtaining microphone data from each audio device of the plurality of audio devices. Some methods involve determining a mutual audibility for each audio device of the plurality of audio devices relative to each other audio device of the plurality of audio devices, determining a user location of a person in the audio environment, determining a user location audibility of each audio device of the plurality of audio devices at the user location and controlling one or more aspects of audio device playback based, at least in part, on the user location audibility.

公开(公告)号：US11887608B2

公开(公告)日：2024-01-30

申请号：US17727732

申请日：2022-04-23

Applicant: DOLBY LABORATORIES LICENSING CORPORATION ,  DOLBY INTERNATIONAL AB

Inventor： Nicolas R. Tsingos ,  Mark R. P. Thomas ,  Christof Fersch

IPC: G10L19/008 ,  H04S7/00

CPC classification number: G10L19/008 ,  H04S7/302 ,  H04S2400/11 ,  H04S2420/01

Abstract: Some disclosed methods involve encoding or decoding directional audio data. Some encoding methods may involve receiving a mono audio signal corresponding to an audio object and a representation of a radiation pattern corresponding to the audio object. The radiation pattern may include sound levels corresponding to plurality of sample times, a plurality of frequency bands and a plurality of directions. The methods may involve encoding the mono audio signal and encoding the source radiation pattern to determine radiation pattern metadata. Encoding the radiation pattern may involve determining a spherical harmonic transform of the representation of the radiation pattern and compressing the spherical harmonic transform to obtain encoded radiation pattern metadata.

公开(公告)号：US20210118452A1

公开(公告)日：2021-04-22

申请号：US17047403

申请日：2019-04-15

Applicant: DOLBY LABORATORIES LICENSING CORPORATION ,  DOLBY INTERNATIONAL AB

Inventor： Nicolas R. Tsingos ,  Mark R. P. Thomas ,  Christof Fersch

IPC: G10L19/008 ,  H04S7/00

Abstract: Some disclosed methods involve encoding or decoding directional audio data. Some encoding methods may involve receiving a mono audio signal corresponding to an audio object and a representation of a radiation pattern corresponding to the audio object. The radiation pattern may include sound levels corresponding to plurality of sample times, a plurality of frequency bands and a plurality of directions. The methods may involve encoding the mono audio signal and encoding the source radiation pattern to determine radiation pattern metadata. Encoding the radiation pattern may involve determining a spherical harmonic transform of the representation of the radiation pattern and compressing the spherical harmonic transform to obtain encoded radiation pattern metadata.

公开(公告)号：US20190253794A1

公开(公告)日：2019-08-15

申请号：US16270903

申请日：2019-02-08

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Mark R. P. Thomas ,  Jan-Hendrik Hanschke

IPC: H04R3/00 ,  H04R1/40 ,  H04S7/00

CPC classification number: H04R3/005 ,  H04R1/406 ,  H04R2201/401 ,  H04R2201/405 ,  H04S3/02 ,  H04S7/30 ,  H04S2400/15 ,  H04S2420/03 ,  H04S2420/11

Abstract: A microphone array for capturing sound field audio content may include a first set of directional microphones disposed on a first framework at a first radius from a center and arranged in at least a first portion of a first spherical surface. The microphone array may include a second set of directional microphones disposed on a second framework at a second radius from the center and arranged in at least a second portion of a second spherical surface. The second radius may be larger than the first radius. The directional microphones may capture information that allows for the extraction of Higher-Order Ambisonics (HOA) signals.