US 12,483,853 B2
Frequency domain multiplexing of spatial audio for multiple listener sweet spots
Alan J. Seefeldt, Alameda, CA (US); and C. Phillip Brown, Castro Valley, CA (US)
Assigned to Dolby Laboratories Licensing Corporation, San Francisco, CA (US)
Appl. No. 18/255,251
Filed by Dolby Laboratories Licensing Corporation, San Francisco, CA (US)
PCT Filed Dec. 2, 2021, PCT No. PCT/US2021/061504
§ 371(c)(1), (2) Date May 31, 2023,
PCT Pub. No. WO2022/119988, PCT Pub. Date Jun. 9, 2022.
Claims priority of provisional application 63/260,529, filed on Aug. 24, 2021.
Claims priority of provisional application 63/120,963, filed on Dec. 3, 2020.
Prior Publication US 2024/0107255 A1, Mar. 28, 2024
Int. Cl. H04S 7/00 (2006.01)
CPC H04S 7/303 (2013.01) [H04R 2499/13 (2013.01); H04S 2420/07 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An audio processing method, comprising:
receiving, by a control system, audio data;
receiving, by the control system, listening configuration data for a plurality of listening configurations, each listening configuration of the plurality of listening configurations corresponding to a listening position and a listening orientation;
analyzing, by an analysis filterbank implemented via the control system, the audio data to produce a global set of frequency bands corresponding to the audio data;
selecting, by the control system and for each renderer of a plurality of renderers implemented by the control system, a subset of the global set of frequency bands to produce a renderer-specific set of frequency bands for each renderer;
rendering, by each renderer of the plurality of renderers and according to the listening configuration data, the renderer-specific set of frequency bands to obtain a set of renderer-specific loudspeaker feed signals for a corresponding listening configuration, wherein:
each renderer is configured to render frequency bands of the renderer-specific set of frequency bands for a different listening configuration;
a first renderer of the plurality of renderers is configured to render a first subset of frequency bands of the renderer-specific set of frequency bands for a first listening position and a first listening orientation; and
a second renderer of the plurality of renderers is configured to render a second subset of frequency bands of the renderer-specific set of frequency bands for a second listening position and a second listening orientation, and wherein:
the second subset of frequency bands is different from the first subset of frequency bands; and
the second listening position and orientation correspond with a second listening configuration that is different from a first listening configuration that corresponds with the first listening position and the first listening orientation;
combining, by the control system, sets of renderer-specific loudspeaker feed signals of each renderer of the plurality of renderers, to produce an output set of loudspeaker feed signals; and
outputting, by the control system, the output set of loudspeaker feed signals to a plurality of loudspeakers of an audio environment.