Apparatus, method and computer program for encoding, decoding, scene processing and other procedures related to DirAC based spatial audio coding using direct component compensation

US11856389B2 · kind B2 · utility

Assignee

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

Inventors

• Guillaume Fuchs · Erlangen, DE
• Oliver Thiergart · Forchheim, DE
• Srikanth KORSE · Erlangen, DE
• Stefan DÖHLA · Erlangen, DE
• Markus Multrus · Nuremberg, DE
• Fabian KÜCH · Erlangen, DE
• Alexandre BOUTHÉON · Erlangen, DE
• Andrea EICHENSEER · Erlangen, DE
• Stefan Bayer · Nuremberg, DE

Key dates

• Filing date: May 27, 2021
• Grant date: Dec 26, 2023
• Expiry date: Jan 2, 2042

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04S2420/13
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

An apparatus for generating a sound field description from an input signal having at least two channels has: an input signal analyzer for obtaining direction data and diffuseness data from the input signal; an estimator for estimating a first energy- or amplitude-related measure for an omnidirectional component derived from the input signal and for estimating a second energy- or amplitude-related measure for a directional component derived from the input signal, and a sound component generator for generating sound field components of the sound field, wherein the sound component generator is configured to perform an energy compensation of the directional component using the first energy- or amplitude-related measure, the second energy- or amplitude-related measure, the direction data and the diffuseness data.