Renderer controlled spatial upmix

US10341801B2 · kind B2 · utility

Assignee

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

Inventors

• Christian Ertel · Eckental, DE
• Johannes Hilpert · Nuremberg, DE
• Andreas Hoelzer · Erlangen, DE
• Achim Kuntz · Hemhofen, DE
• Jan Plogsties · Ergolding, DE
• Michael Kratschmer · Erlangen, DE

Key dates

• Filing date: Dec 27, 2017
• Grant date: Jul 2, 2019
• Expiry date: Dec 27, 2037

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04S2420/03
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

An audio decoder device for decoding a compressed input audio signal having at least one core decoder having one or more processors for generating a processor output signal based on a processor input signal, wherein a number of output channels of the processor output signal is higher than a number of input channels of the processor input signal, wherein each of the one or more processors has a decorrelator and a mixer, wherein a core decoder output signal having a plurality of channels has the processor output signal, and wherein the core decoder output signal is suitable for a reference loudspeaker setup; at least one format converter device configured to convert the core decoder output signal into an output audio signal, which is suitable for a target loudspeaker setup; and a control device configured to control at least one or more processors in such way that the decorrelator of the processor may be controlled independently from the mixer of the processor, wherein the control device is configured to control at least one of the decorrelators of the one or more processors depending on the target loudspeaker setup.