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公开(公告)号：US12236963B2
公开(公告)日：2025-02-25
申请号：US18606908
申请日：2024-03-15
Applicant: DOLBY INTERNATIONAL AB
Inventor： Sven Kordon , Alexander Krueger
IPC: G10L19/008 , H04S3/00
Abstract: The present document relates to a method of layered encoding of a compressed sound representation of a sound or sound field. The compressed sound representation comprises a basic compressed sound representation comprising a plurality of components, basic side information for decoding the basic compressed sound representation to a basic reconstructed sound representation of the sound or sound field, and enhancement side information including parameters for improving the basic reconstructed sound representation. The method comprises sub-dividing the plurality of components into a plurality of groups of components and assigning each of the plurality of groups to a respective one of a plurality of hierarchical layers, the number of groups corresponding to the number of layers, and the plurality of layers including a base layer and one or more hierarchical enhancement layers, adding the basic side information to the base layer, and determining a plurality of portions of enhancement side information from the enhancement side information and assigning each of the plurality of portions of enhancement side information to a respective one of the plurality of layers, wherein each portion of enhancement side information includes parameters for improving a reconstructed sound representation obtainable from data included in the respective layer and any layers lower than the respective layer. The document further relates to a method of decoding a compressed sound representation of a sound or sound field, wherein the compressed sound representation is encoded in a plurality of hierarchical layers that include a base layer and one or more hierarchical enhancement layers, as well as to an encoder and a decoder for layered coding of a compressed sound representation.
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公开(公告)号：US12231873B2
公开(公告)日：2025-02-18
申请号：US17607064
申请日：2020-03-30
Applicant: D&M Holdings, Inc.
Inventor： Keita Watanabe , Yuki Takahashi
Abstract: [Problem] To enable the desired number of channels to be listened to at a lower cost and without wasting resources. [Solution] Process multi-channel digital audio signals by coordinating between a plurality of AV amp devices 1. An operation terminal 5 assigns audio channels to be processed, to each AV amp device 1, and, on the basis of the signal processing time for each AV amp device 1, determines an output delay time for each AV amp device 1 so that the output timing for analog audio signals matches for all AV amp devices 1. Each AV amp device 1 decodes input digital audio signals into analog audio signals for audio channels assigned to that AV amp device 1 by the operation terminal 5 and delays the output of the decoded analog audio signal, by the output delay time for that AV amp device 1 determined by the operation terminal 5.
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公开(公告)号：US20250048053A1
公开(公告)日：2025-02-06
申请号：US18364638
申请日：2023-08-03
Applicant: QUALCOMM Incorporated
Inventor： Andre SCHEVCIW , Graham Bradley DAVIS , Andrea Felice GENOVESE
Abstract: A device includes a memory configured to store first audio data and second audio data. The device also includes one or more processors coupled to the memory and configured to determine priorities of audio sources of an audio scene. The one or more processors are also configured to render, using an object renderer, the first audio data to generate a first audio signal. The first audio data represents a first audio source associated with a first priority. The one or more processors are further configured to render, using a first ambisonics renderer, the second audio data to generate a second audio signal. The second audio data represents a second audio source associated with a second priority.
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公开(公告)号：US20250039608A1
公开(公告)日：2025-01-30
申请号：US18768664
申请日：2024-07-10
Applicant: Atlas Headrest LLC
Inventor： Andrew Michael Foley
Abstract: A headrest apparatus, a method, and a computer program product is provided for providing surround sound experience to user. The headrest apparatus receives an audio portion of a media content from an electronic device. The headrest apparatus determines a plurality of audio channel signals from the received audio portion. The determined plurality of audio channel signals includes at least a first set of audio channel signals. The headrest apparatus further controls a first audio rendering device, embedded at a first position in the headrest apparatus, to output a first audio channel signal of the first set of audio channel signals. The headrest apparatus further controls a second audio rendering device, embedded at a first position in the headrest apparatus, to output a second audio channel signal of the first set of audio channel signals.
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公开(公告)号：US20250031000A1
公开(公告)日：2025-01-23
申请号：US18798550
申请日：2024-08-08
Applicant: QUALCOMM Incorporated
Inventor： S M Akramus SALEHIN , Shankar THAGADUR SHIVAPPA , Sanghyun CHI , Nils Gunther PETERS
Abstract: An apparatus includes one or more processors configured to receive orientation data and to select, based on the orientation data, a particular filter from among multiple filters. The one or more processors are configured to perform signal processing operations associated with three-dimensional (3D) sound data based on the particular filter.
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Patent Agency Ranking
公开(公告)号：US12200467B2
公开(公告)日：2025-01-14
申请号：US18423441
申请日：2024-01-26
Applicant: Philip Raymond Schaefer
Inventor： Philip Raymond Schaefer
Abstract: A system for rotating sound or selective listening to sound provides for the ability of the apparent direction of sound sources in a listening environment to remain in consistent orientations in space despite rotations of the microphones used to capture the sound and despite rotations of the head of the listener, even when wearing headphones. Modules are provided in the system to distinguish the sound sources and their apparent directions, as well as to optionally rotate the sound sources in response to detected rotations of the listener's head and/or detected rotations of the microphones.
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公开(公告)号：US12177646B2
公开(公告)日：2024-12-24
申请号：US17927634
申请日：2021-05-20
Applicant: DOLBY INTERNATIONAL AB
Inventor： Jens Popp , Claus-Christian Spenger , Celine Merpillat , Tobias Mueller , Holger Hoerich
IPC: H04R5/02 , G10L19/008 , H04S3/00 , H04S7/00
Abstract: An audio bitstream is decoded into audio objects and audio metadata for the audio objects. The audio objects include a specific audio object. The audio metadata specifies frame-level gains that include a first gain and a second gain respectively for a first audio frame and a second audio frame. It is determined, based on the first and second gains, whether sub-frame gains are to be generated for the specific audio object. If so, a ramp length is determined for a ramp used to generate the sub-frame gains for the specific audio object. The ramp of the ramp length is used to generate the sub-frame gains for the specific audio object. A sound field represented by the audio objects with the sub-frame gains is rendered by audio speakers.
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8.发明申请公开(公告)号：US20240422496A1
公开(公告)日：2024-12-19
申请号：US18821581
申请日：2024-08-30
Applicant: Yamaha Corporation
Inventor： Kenji ISHIZUKA
Abstract: A sound signal processing method includes receiving, from a distribution source, a sound signal, and a first parameter of a first signal processing to be applied to the sound signal, detecting a first acoustic characteristic of a listener's reproduction environment, adjusting a second parameter based on the first parameter and the first acoustic characteristic, and applying a second signal processing on the sound signal based on the second parameter, thereby obtaining a reproduction sound signal to be reproduced in the reproduction environment.
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公开(公告)号：US12167221B2
公开(公告)日：2024-12-10
申请号：US18011434
申请日：2021-06-03
Applicant: Clemens Par
Inventor： Clemens Par
Abstract: Determining Par-Hilbert invariants is a reliable auxiliary means in the field of real-time transmission of spatial audio signals. So-called CC-HRTFs make way for an inverse and stable model of spatial perception both on headphones and on loudspeakers, with precise localization in the three-dimensional space.
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公开(公告)号：US20240406669A1
公开(公告)日：2024-12-05
申请号：US18665488
申请日：2024-05-15
Applicant: Apple Inc.
Inventor： Dipanjan Sen , Moo Young Kim , Francois Becker , Sang Uk Ryu
IPC: H04S7/00 , G10L19/008 , H04S3/00
Abstract: The various aspects of the disclosure here enable a content creation side to control how discrete audio objects that make up a sound program are rendered by a decoding side to achieve greater realism, while enabling the decoder side to also control the rendering process to consider the positions and orientations of the objects as virtual sound sources relative to the listener. The same sound program can thus be optimally rendered by a variety of decoder side formats, such as binaural on headphone, cross-talked cancelled binaural on a stereo pair of speakers embedded in a device, or multichannel on an immersive loudspeaker layout, e.g., planar such as 5.1 and 7.1 surround sound layouts, 3D such as 7.1.4 or 22.2, etc. Other aspects are also described and claimed.
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