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公开(公告)号：US20240168706A1
公开(公告)日：2024-05-23
申请号：US18535526
申请日：2023-12-11
Inventor： Jeroen Koppens , Jeffrey Riedmiller , Kristofer Kjoerling , Alexander Stahlmann , Holger Hoerich , Alan J. Seefeldt
IPC: G06F3/16 , G10L19/16 , G10L21/0324 , H03G3/30 , H03G7/00 , H03G9/00 , H03G9/02 , H03G9/12 , H03G9/18 , H04S1/00 , H04S7/00
CPC classification number: G06F3/165 , G10L19/167 , G10L21/0324 , H03G3/3005 , H03G3/3089 , H03G7/002 , H03G7/007 , H03G9/005 , H03G9/025 , H03G9/12 , H03G9/18 , H04S1/00 , H04S7/30 , H04S2400/13
Abstract: In an audio encoder, for audio content received in a source audio format, default gains are generated based on a default dynamic range compression (DRC) curve, and non-default gains are generated for a non-default gain profile. Based on the default gains and non-default gains, differential gains are generated. An audio signal comprising the audio content, the default DRC curve, and differential gains is generated. In an audio decoder, the default DRC curve and the differential gains are identified from the audio signal. Default gains are re-generated based on the default DRC curve. Based on the combination of the re-generated default gains and the differential gains, operations are performed on the audio content extracted from the audio signal.
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公开(公告)号：US11943600B2
公开(公告)日：2024-03-26
申请号：US17607956
申请日：2020-05-01
Applicant: Dolby Laboratories Licensing Corporation
Inventor： François G. Germain , Alan J. Seefeldt
CPC classification number: H04S7/302 , H04R5/02 , H04S3/008 , H04S2400/01 , H04S2400/11 , H04S2400/13
Abstract: An apparatus and method of rendering audio objects with multiple types of renderers. The weighting between the selected renderers depends upon the position information in each audio object. As each type of renderer has a different output coverage, the combination of their weighted outputs results in the audio being perceived at the position according to the position information.
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公开(公告)号：US20230359430A1
公开(公告)日：2023-11-09
申请号：US18351357
申请日：2023-07-12
Applicant: Dolby Laboratories Licensing Corporation
Inventor： Mark Alexander , Chunjian Li , Joshua Brandon Lando , Alan J. Seefeldt , C. Phillip Brown , Dirk Jeroen Breebaart
CPC classification number: G06F3/165 , H04B15/00 , H04R1/1041 , H04R1/1083 , H04R3/04 , H04R29/001 , H04R5/033 , H04R2430/01
Abstract: Media input audio data corresponding to a media stream and microphone input audio data from at least one microphone may be received. A first level of at least one of a plurality of frequency bands of the media input audio data, as well as a second level of at least one of a plurality of frequency bands of the microphone input audio data, may be determined. Media output audio data and microphone output audio data may be produced by adjusting levels of one or more of the first and second plurality of frequency bands based on the perceived loudness of the microphone input audio data, of the microphone output audio data, of the media output audio data and the media input audio data. One or more processes may be modified upon receipt of a mode-switching indication.
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公开(公告)号：US11765535B2
公开(公告)日：2023-09-19
申请号：US17535459
申请日：2021-11-24
Applicant: DOLBY LABORATORIES LICENSING CORPORATION
Inventor： Joshua Brandon Lando , Freddie Sanchez , Alan J. Seefeldt
CPC classification number: H04S3/008 , G10L19/008 , G10L19/20 , H04R5/02 , G10L19/167 , H04R1/403 , H04R27/00 , H04R2499/13 , H04S7/302 , H04S2400/11 , H04S2420/03
Abstract: Embodiments are directed to a method of rendering adaptive audio by receiving input audio comprising channel-based audio, audio objects, and dynamic objects, wherein the dynamic objects are classified as sets of low-priority dynamic objects and high-priority dynamic objects, rendering the channel-based audio, the audio objects, and the low-priority dynamic objects in a first rendering processor of an audio processing system, and rendering the high-priority dynamic objects in a second rendering processor of the audio processing system. The rendered audio is then subject to virtualization and post-processing steps for playback through soundbars and other similar limited height capable speakers.
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公开(公告)号：US20230091218A1
公开(公告)日：2023-03-23
申请号：US18060232
申请日：2022-11-30
Applicant: Dolby Laboratories Licensing Corporation
Inventor： C. Phillip Brown , Joshua Brandon Lando , Mark F. Davis , Alan J. Seefeldt , David Matthew Cooper , Dirk Jeroen Breebaart , Rhonda Wilson
IPC: H04S7/00
Abstract: A system and method of modifying a binaural signal using headtracking information. The system calculates a delay, a first filter response, and a second filter response, and applies these to the left and right components of the binaural signal according to the headtracking information. The system may also apply headtracking to parametric binaural signals. In this manner, headtracking may be applied to pre-rendered binaural audio.
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Patent Agency Ranking
公开(公告)号：USD928739S1
公开(公告)日：2021-08-24
申请号：US29657811
申请日：2018-07-25
Applicant: Dolby Laboratories Licensing Corporation
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公开(公告)号：US11064308B2
公开(公告)日：2021-07-13
申请号：US16940910
申请日：2020-07-28
Applicant: DOLBY LABORATORIES LICENSING CORPORATION
Inventor： Brett G. Crockett , Alan J. Seefeldt , C. Phillip Brown
Abstract: Embodiments are directed to upward-firing speakers that reflect sound off a ceiling to a listening location at a distance from a speaker. The reflected sound provides height cues to reproduce audio objects that have overhead audio components. A virtual height filter based on a directional hearing model is applied to the upward-firing driver signal to improve the perception of height for audio signals transmitted by the virtual height speaker to provide optimum reproduction of the overhead reflected sound. The upward firing driver is tilted at an inclination angle of approximately 20 degrees to the horizontal axis of the speaker and separate height and direct terminal connections are provided to interface to an adaptive audio rendering system.
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公开(公告)号：US20210168553A1
公开(公告)日：2021-06-03
申请号：US17167442
申请日：2021-02-04
Applicant: Dolby Laboratories Licensing Corporation
Inventor： C. Phillip Brown , Joshua Brandon Lando , Mark F. Davis , Alan J. Seefeldt , David Matthew Cooper , Dirk Jeroen Breebaart , Rhonda Wilson
IPC: H04S7/00
Abstract: A system and method of modifying a binaural signal using headtracking information. The system calculates a delay, a first filter response, and a second filter response, and applies these to the left and right components of the binaural signal according to the headtracking information. The system may also apply headtracking to parametric binaural signals. In this manner, headtracking may be applied to pre-rendered binaural audio.
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公开(公告)号：US10833644B2
公开(公告)日：2020-11-10
申请号：US16729468
申请日：2019-12-29
Applicant: Dolby Laboratories Licensing Corporation
Inventor： Brett G. Crockett , Alan J. Seefeldt
IPC: H04R29/00 , H03G5/00 , H03G3/30 , H03G7/00 , H03G9/00 , H03G1/00 , H04R3/04 , G10L21/038 , G10L25/21
Abstract: In some embodiments, a method for processing an audio signal in an audio processing apparatus is disclosed. The method includes receiving an audio signal and a parameter, the parameter indicating a location of an auditory event boundary. An audio portion between consecutive auditory event boundaries constitutes an auditory event. The method further includes applying a modification to the audio signal based in part on an occurrence of the auditory event. The parameter may be generated by monitoring a characteristic of the audio signal and identifying a change in the characteristic.
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公开(公告)号：US10779084B2
公开(公告)日：2020-09-15
申请号：US16336861
申请日：2017-09-28
Inventor： Daniel Arteaga , Giulio Cengarle , David Matthew Fischer , Antonio Mateos Sole , Davide Scaini , Alan J. Seefeldt
Abstract: Embodiments are described for a method for localizing a set of speakers (106) and microphones (108), having only the times of arrival between each of the speakers and microphones. An autodiscovery process (107) uses an external input to set: a global translation (3 continuous parameters), a global rotation (3 continuous parameters), and discrete symmetries, i.e., an exchange of any axis pairs and/or reversal of any axis. Different time of arrival acquisition techniques may be used, such as ultrasonic sweeps or generic multitrack audio content. The autodiscovery algorithm is based in minimizing a certain cost function, and the process allows for latencies in the recordings, possibly linked to the latencies in the emission.
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