US 12,424,231 B2
Hierarchical spatial resolution codec
Dipanjan Sen, Dublin, CA (US); Moo Young Kim, San Diego, CA (US); Frank Baumgarte, Sunnyvale, CA (US); Sina Zamani, Cupertino, CA (US); and Aram Lindahl, Menlo Park, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Appl. No. 18/246,029
Filed by Apple Inc., Cupertino, CA (US)
PCT Filed Aug. 31, 2021, PCT No. PCT/US2021/048354
§ 371(c)(1), (2) Date Mar. 20, 2023,
PCT Pub. No. WO2022/066370, PCT Pub. Date Mar. 31, 2022.
Claims priority of provisional application 63/083,788, filed on Sep. 25, 2020.
Prior Publication US 2023/0360661 A1, Nov. 9, 2023
Int. Cl. G10L 19/24 (2013.01); G10L 19/008 (2013.01)
CPC G10L 19/24 (2013.01) [G10L 19/008 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method of encoding audio content, the method comprising:
receiving, by an encoding device, the audio content, the audio content being represented by one or more content types, a first content type including a plurality of scene elements;
determining priorities of the plurality of scene elements of the first content type;
encoding an adaptive number of the plurality of scene elements of the first content type into a first content stream based on the priorities of the plurality of scene elements and a target bitrate for transmitting the audio content;
encoding into a second content stream remaining scene elements of the first content type not selected for encoding into the first content stream, the second content stream representing encoding of a second content type;
wherein as the target bit rate changes, the adaptive number of scene elements of the first content type is selected based on selecting scene elements having higher priorities than the priorities of the remaining scene elements; and
generating a transport stream that includes the first content stream and the second content stream for transmission based on the target bitrate.