Patent · US Active

Concept for combining multiple parametrically coded audio sources

US8139775B2 · kind B2 · utility

10Cited by

3References

20Claims

0Family size

Assignee

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

Inventors

Johannes Hilpert · Nuremberg, DE
Juergen Herre · Erlangen, DE
Karsten Linzmeier · Nuremberg, DE
Oliver Hellmuth · Erlangen, DE
Thorsten Kastner · Kronach, DE

Key dates

Filing date	Apr 24, 2007
Grant date	Mar 20, 2012
Priority date	—
Expiry date	Nov 23, 2030

Classification

Technology area (CPC G)Physics
CPC primaryG10L19/008
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

According to the present invention, multiple parametrically encoded audio signals can be efficiently combined using an audio signal generator, which generates an audio output signal by combining the down-mix channels and the associated parameters of the audio signals directly within the parameter domain, i.e. without reconstructing or decoding the individual input audio signals prior to the generation of the audio output signal. This is achieved by direct mixing of the associated down-mix channels of the individual input signals. It is one key feature of the present invention that the combination of the down-mix channels is achieved by simple, computationally inexpensive arithmetic operations.

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