Patent · US Active

Apparatus and method for synchronizing multichannel extension data with an audio signal and for processing the audio signal

US9424853B2 · kind B2 · utility

2Cited by

0References

14Claims

0Family size

Assignee

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

Inventors

Sebastian Scharrer · Altdorf, DE
Wolfgang Fiesel · Schwanstetten, DE
Joerg Pickel · Happurg, DE
Matthias Neusinger · Meiningen, DE

Key dates

Filing date	Feb 7, 2014
Grant date	Aug 23, 2016
Priority date	—
Expiry date	Sep 6, 2034

Classification

Technology area (CPC H)Electricity
CPC primaryH03M3/388
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

For synchronizing multichannel extension data with an audio signal, wherein the audio signal includes block division information and the multichannel extension data include reference audio signal fingerprint information, the block division information in the audio signal is detected by means of a block detector. Thereupon, block division of the audio signal is performed by a fingerprint calculator according to the block division information in order to obtain a sequence of test audio signal fingerprints. In addition to that, a sequence of reference audio signal fingerprints is extracted from the reference audio signal fingerprint information of the multichannel extension data. Both sequences of fingerprints are correlated in order to obtain a correlation result, by which a compensator is controlled in order to reduce or eliminate a time offset between the multichannel extension data and the audio signal.

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