Apparatus and method for encoding or decoding a multi-channel signal

US11508384B2 · kind B2 · utility

Assignee

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

Inventors

• Sascha Dick · Nuremberg, DE
• Florian Schuh · Zirndorf, DE
• Nikolaus Rettelbach · Nuremberg, DE
• Tobias SCHWEGLER · Nürnberg, DE
• Richard Fueg · Nuremberg, DE
• Johannes Hilpert · Nuremberg, DE
• Matthias Neusinger · Meiningen, DE

Key dates

• Filing date: Aug 17, 2020
• Grant date: Nov 22, 2022
• Expiry date: Aug 17, 2040

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04S2400/01
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

An apparatus for encoding a multi-channel signal having at least three channels includes an iteration processor, a channel encoder and an output interface. The iteration processor is configured to calculate inter-channel correlation values between each pair of the at least three channels, for selecting a pair including a highest value or including a value above a threshold, and for processing the selected pair using a multi-channel processing operation to derive first multi-channel parameters for the selected pair and to derive first processed channels. The iteration processor is configured to perform the calculating, the selecting and the processing using at least one of the processed channels to derive second multi-channel parameters and second processed channels. The channel encoder is configured to encode channels resulting from an iteration processing to obtain encoded channels. The output interface is configured to generate an encoded multi-channel signal including the encoded channels and the first and second multi-channel parameters.