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公开(公告)号：US20210249029A1
公开(公告)日：2021-08-12
申请号：US17049029
申请日：2019-04-24
Applicant: DOLBY LABORATORIES LICENSING CORPORATION
Inventor： Christopher Graham Hines , Glenn N. Dickins , Adam J. Mills
IPC: G10L21/0232 , H04R1/08
Abstract: A noise estimation method including steps of generating gap confidence values in response to microphone output and playback signals, and using the gap confidence values to generate an estimate of background noise in a playback environment. Each gap confidence value is indicative of confidence of presence of a gap at a corresponding time in the playback signal, and may be a combination of candidate noise estimates weighted by the gap confidence values. Generation of the candidate noise estimates may but need not include performance of echo cancellation. Optionally, noise compensation is performed on an audio input signal using the generated background noise estimate. Other aspects are systems configured to perform any embodiment of the noise estimation method.
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公开(公告)号：US20240187811A1
公开(公告)日：2024-06-06
申请号：US18327797
申请日：2021-12-02
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.
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公开(公告)号：US20210035563A1
公开(公告)日：2021-02-04
申请号：US16936673
申请日：2020-07-23
Applicant: Dolby Laboratories Licensing Corporation
Inventor： Richard J. Cartwright , Christopher Graham Hines
Abstract: In some embodiments, methods and systems for training an acoustic model, where the training includes a training loop (including at least one epoch) following a data preparation phase. During the training loop, training data are augmented to generate augmented training data. During each epoch of the training loop, at least some of the augmented training data is used to train the model. The augmented training data used during each epoch may be generated by differently augmenting (e.g., augmenting using a different set of augmentation parameters) at least some of the training data. In some embodiments, the augmentation is performed in the frequency domain, with the training data organized into frequency bands. The acoustic model may be of a type employed (when trained) to perform speech analytics (e.g., wakeword detection, voice activity detection, speech recognition, or speaker recognition) and/or noise suppression.
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公开(公告)号：US20230421952A1
公开(公告)日：2023-12-28
申请号：US18255573
申请日：2021-12-02
Applicant: DOLBY LABORATORIES LICENSING CORPORATION
Inventor： Benjamin John Southwell , David Gunawan , Christopher Graham Hines
IPC: H04R3/02
CPC classification number: H04R3/02
Abstract: Some implementations involve receiving, from a first subband domain acoustic echo canceller (AEC) of a first audio device in an audio environment, first adaptive filter management data from each of a plurality of first adaptive filter management modules, each first adaptive filter management module corresponding to a subband of the first subband domain AEC, each first adaptive filter management module being configured to control a first plurality of adaptive filters. The first plurality of adaptive filters may include at least a first adaptive filter type and a second adaptive filter type. Some implementations involve extracting, from the first adaptive filter management data, a first plurality of extracted features corresponding to a plurality of subbands of the first subband domain AEC and estimating a current local acoustic state based, at least in part, on the first plurality of extracted features.
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公开(公告)号：US11232807B2
公开(公告)日：2022-01-25
申请号：US17049029
申请日：2019-04-24
Applicant: DOLBY LABORATORIES LICENSING CORPORATION
Inventor： Christopher Graham Hines , Glenn N. Dickins , Adam J. Mills
IPC: G10L21/0232 , H04R1/08 , G10L21/0208 , G10L21/0216 , H04R3/02
Abstract: A noise estimation method including steps of generating gap confidence values in response to microphone output and playback signals, and using the gap confidence values to generate an estimate of background noise in a playback environment. Each gap confidence value is indicative of confidence of presence of a gap at a corresponding time in the playback signal, and may be a combination of candidate noise estimates weighted by the gap confidence values. Generation of the candidate noise estimates may but need not include performance of echo cancellation. Optionally, noise compensation is performed on an audio input signal using the generated background noise estimate. Other aspects are systems configured to perform any embodiment of the noise estimation method.
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Patent Agency Ranking
公开(公告)号：US20210304782A1
公开(公告)日：2021-09-30
申请号：US17261884
申请日：2019-07-26
Applicant: DOLBY LABORATORIES LICENSING CORPORATION
Inventor： Christopher Graham Hines , Glenn N. Dickins
IPC: G10L21/0232 , G10K11/178
Abstract: A pervasive listening method including steps of inserting at least one forced gap in a playback signal (thus generating a modified playback signal), and during playback of the modified playback signal, monitoring non-playback content (e.g., including by generating an estimate of background noise) in a playback environment using output of a microphone in the playback environment. Optionally, the method includes generation of the playback signal, including by processing of (e.g., performing noise compensation on) an input signal using a result (e.g., a background noise estimate) of the monitoring of non-playback content. Other aspects are systems configured to perform any embodiment of the pervasive listening method.
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公开(公告)号：US12003673B2
公开(公告)日：2024-06-04
申请号：US17628732
申请日：2020-07-29
Inventor： Glenn N. Dickins , Christopher Graham Hines , David Gunawan , Richard J. Cartwright , Alan J. Seefeldt , Daniel Arteaga , Mark R. P. Thomas , Joshua B. Lando
CPC classification number: H04M9/082 , G10L15/22 , G10L2015/223
Abstract: An audio processing method may involve receiving output signals from each microphone of a plurality of microphones in an audio environment, the output signals corresponding to a current utterance of a person and determining, based on the output signals, one or more aspects of context information relating to the person, including an estimated current proximity of the person to one or more microphone locations. The method may involve selecting two or more loudspeaker-equipped audio devices based, at least in part, on the one or more aspects of the context information, determining one or more types of audio processing changes to apply to audio data being rendered to loudspeaker feed signals for the audio devices and causing one or more types of audio processing changes to be applied. In some examples, the audio processing changes have the effect of increasing a speech to echo ratio at one or more microphones.
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公开(公告)号：US11968268B2
公开(公告)日：2024-04-23
申请号：US17630779
申请日：2020-07-28
Inventor： Glenn N. Dickins , Mark R. P. Thomas , Alan J. Seefeldt , Joshua B. Lando , Daniel Arteaga , Carlos Medaglia Dyonisio , David Gunawan , Richard J. Cartwright , Christopher Graham Hines
CPC classification number: H04L67/141 , H04R1/326 , H04R1/403 , H04R1/406 , H04R3/005 , H04R3/12 , H04S7/303
Abstract: An audio session management method may involve: determining, by an audio session manager, one or more first media engine capabilities of a first media engine of a first smart audio device, the first media engine being configured for managing one or more audio media streams received by the first smart audio device and for performing first smart audio device signal processing for the one or more audio media streams according to a first media engine sample clock; receiving, by the audio session manager and via a first application communication link, first application control signals from the first application; and controlling the first smart audio device according to the first media engine capabilities, by the audio session manager, via first audio session management control signals transmitted to the first smart audio device via a first smart audio device communication link and without reference to the first media engine sample clock.
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公开(公告)号：US11587576B2
公开(公告)日：2023-02-21
申请号：US17449918
申请日：2021-10-04
Applicant: Dolby Laboratories Licensing Corporation
Inventor： Christopher Graham Hines , Glenn N. Dickins , Adam J. Mills
IPC: G10L21/0232 , H04R1/08 , G10L21/0208 , G10L21/0216 , H04R3/02
Abstract: A noise estimation method including steps of generating gap confidence values in response to microphone output and playback signals, and using the gap confidence values to generate an estimate of background noise in a playback environment. Each gap confidence value is indicative of confidence of presence of a gap at a corresponding time in the playback signal, and may be a combination of candidate noise estimates weighted by the gap confidence values. Generation of the candidate noise estimates may but need not include performance of echo cancellation. Optionally, noise compensation is performed on an audio input signal using the generated background noise estimate. Other aspects are systems configured to perform any embodiment of the noise estimation method.
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公开(公告)号：US20220028405A1
公开(公告)日：2022-01-27
申请号：US17449918
申请日：2021-10-04
Applicant: Dolby Laboratories Licensing Corporation
Inventor： Christopher Graham Hines , Glenn N. Dickins , Adam J. Mills
IPC: G10L21/0232 , H04R1/08
Abstract: A noise estimation method including steps of generating gap confidence values in response to microphone output and playback signals, and using the gap confidence values to generate an estimate of background noise in a playback environment. Each gap confidence value is indicative of confidence of presence of a gap at a corresponding time in the playback signal, and may be a combination of candidate noise estimates weighted by the gap confidence values. Generation of the candidate noise estimates may but need not include performance of echo cancellation. Optionally, noise compensation is performed on an audio input signal using the generated background noise estimate. Other aspects are systems configured to perform any embodiment of the noise estimation method.
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