Patent · US Active

Multi-channel audio decoder, multi-channel audio encoder, methods and computer program using a residual-signal-based adjustment of a contribution of a decorrelated signal

US10354661B2 · kind B2 · utility

6Cited by

8References

3Claims

0Family size

Assignee

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

Inventors

Sascha Dick · Nuremberg, DE
Christian Helmrich · Erlangen, DE
Johannes Hilpert · Nuremberg, DE
Andreas Hoelzer · Erlangen, DE

Key dates

Filing date	May 27, 2016
Grant date	Jul 16, 2019
Priority date	—
Expiry date	May 27, 2036

Classification

Technology area (CPC H)Electricity
CPC primaryH04S2420/07
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A multi-channel audio decoder for providing at least two output audio signals on the basis of an encoded representation is configured to perform a weighted combination of a downmix signal, a decorrelated signal and a residual signal, to obtain one of the output audio signals. The multi-channel audio decoder is configured to determine a weight describing a contribution of the decorrelated signal in the weighted combination in dependence on the residual signal. A multi-channel audio encoder for providing an encoded representation of a multi-channel audio signal is configured to obtain a downmix signal on the basis of the multi-channel audio signal, to provide parameters describing dependencies between the channels of the multi-channel audio signal, and to provide a residual signal. The multi-channel audio encoder is configured to vary an amount of residual signal included into the encoded representation in dependence on the multi-channel audio signal.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.