Intellectual Property India Publishes Patent Application for Layered Coding For Compressed Sound Or Sound Field Representations

MUMBAI, India, June 19 -- Intellectual Property India has published a patent application (202648064969 A) filed by Dolby International Ab on May 22, 2026, for Layered Coding For Compressed Sound Or Sound Field Representations.

Inventors include Kordon, Sven; and Krueger, Alexander.

The application for the patent was published on June 05, 2026, under issue no. 23/2026.

Abstract: ABSTRACT LAYERED CODING FOR COMPRESSED SOUND OR SOUND FIELD REPRESENTATIONS The present document relates 5 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 10 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 15 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 20 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 25 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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