Audio scene encoder, audio scene decoder and related methods using hybrid encoder-decoder spatial analysis

US11361778B2 · kind B2 · utility

Assignee

• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

• Guillaume Fuchs · Erlangen, DE
• Stefan Bayer · Nuremberg, DE
• Markus Multrus · Nuremberg, DE
• Oliver Thiergart · Forchheim, DE
• Alexandre BOUTHÉON · Erlangen, DE
• Jürgen Herre · Buckenhof, DE
• Florin Ghido · Nuremberg, DE
• Wolfgang Jaegers · Erlangen, DE
• Fabian KÜCH · Erlangen, DE

Key dates

• Filing date: Jul 30, 2020
• Grant date: Jun 14, 2022
• Expiry date: Jul 30, 2040

Classification

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

Abstract

An audio scene encoder for encoding an audio scene, the audio scene having at least two component signals, has: a core encoder for core encoding the at least two component signals, wherein the core encoder is configured to generate a first encoded representation for a first portion of the at least two component signals, and to generate a second encoded representation for a second portion of the at least two component signals, a spatial analyzer for analyzing the audio scene to derive one or more spatial parameters or one or more spatial parameter sets for the second portion; and an output interface for forming the encoded audio scene signal, the encoded audio scene signal having the first encoded representation, the second encoded representation, and the one or more spatial parameters or one or more spatial parameter sets for the second portion.