Layered coding for compressed sound or sound field representations

US10706860B2 · kind B2 · utility

Assignee

• Dolby International AB · IE

Inventors

• Sven Kordon · Wunstorf, DE
• Alexander Krueger · Burgdorf, DE

Key dates

• Filing date: Oct 7, 2016
• Grant date: Jul 7, 2020
• Expiry date: Oct 7, 2036

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04S2420/11
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

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 baselayer 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 en…