US 11,240,621 B2Granted

Three-dimensional audio systems

AssigneeLi Creative Technologies, Inc.

InventorsQi Li, Yin Ding, Jorel Olan, Jason Thai

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Abstract

A specification of a mesh of filters may be defined on a grid in a three-dimensional space presented in a user interface. A plurality of sound tracks may be determined, wherein each of the sound tracks is associated with a corresponding sound source that may be represented in the three-dimensional space along with a listener. Responsive to user configuration of a position of the listener and/or positions of the sound sources in the three-dimensional space, a plurality of filters may be selected based on the mesh of filters and the positions of the sound sources and the listener in the three-dimensional space. Each of the filters may be applied to a corresponding one of the plurality of sound tracks to generate a plurality of filtered sound tracks and the three-dimensional sound may be generated based on the plurality of filtered sound tracks.

Claims22

Dependent claims

A three-dimensional sound generation system, comprising:

a user interface device;
and
a processing device, communicatively coupled to the user interface device, to:
receive a specification of a three-dimensional space and a mesh of head related transfer function (HRTF) filters defined on a grid in the three-dimensional space, wherein the three-dimensional space is presented in a user interface of the user interface device;
determine one or more sound tracks, wherein each of the one or more sound tracks is associated with a corresponding sound source;
represent, in the user interface, a listener and the corresponding sound sources of the one or more sound tracks in the three-dimensional space;
responsive to a user configuration of at least one of a position of the listener or positions of the sound sources in the three-dimensional space, select a plurality of HRTF filters from the mesh of HRTF filters based on the relative positions of the sound sources and the listener in the three-dimensional space;
apply each of the plurality of HRTF filters to a corresponding one of the one or more sound tracks to generate one or more filtered sound tracks;
and
generate the three-dimensional sound from the one or more filtered sound tracks.

7 more elements

A computer-implemented method for generating three-dimensional sound, comprising:

receiving a specification of a three-dimensional space and a mesh of head related transfer function (HRTF) filters defined on a grid in the three-dimensional space, wherein the three-dimensional space is presented in a user interface of a user interface device;
determining one or more sound tracks, wherein each of the one or more sound tracks is associated with a corresponding sound source;
representing, in the user interface, a listener and the corresponding sound sources of the one or more sound tracks in the three-dimensional space;
responsive to a user configuration of at least one of a position of the listener or positions of the sound sources in the three-dimensional space, selecting a plurality of HRTF filters from the mesh of HRTF filters based on the relative positions of the sound sources and the listener position in the three-dimensional space;
applying each of the plurality of HRTF filters to a corresponding one of the one or more sound tracks to generate one or more filtered sound tracks;
and
generating the three-dimensional sound from the filtered sound tracks.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/227,067Filed 9 Apr 2021 · us provisional application
Priority: 11 Apr 2020
Published: US 2021/0321212 A114 Oct 2021
Granted: 1 Feb 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification13 codes

H04S 7/302
Control circuits for electronic adaptation of the sound field: electronic adaptation of stereophonic sound system to listener position or orientation
H04S 7/303
Electronic adaptation of stereophonic sound system to listener position or orientation: tracking of listener position or orientation
H04N 7/147
Between two video terminals, e.g. videophone: communication arrangements, e.g. identifying the communication as a video-communication,…
H04N 7/15
Systems for two-way working: conference systems