EP 3403260 A1 20181121 - METHOD AND APPARATUS FOR CONDITIONING AN AUDIO SIGNAL SUBJECTED TO LOSSY COMPRESSION
Title (en)
METHOD AND APPARATUS FOR CONDITIONING AN AUDIO SIGNAL SUBJECTED TO LOSSY COMPRESSION
Title (de)
VERFAHREN UND VORRICHTUNG ZUR AUFBEREITUNG EINES VERLUSTBEHAFTET KOMPRIMIERTEN AUDIOSIGNALS
Title (fr)
PROCÉDÉ ET DISPOSITIF DE MISE EN FORME D'UN SIGNAL AUDIO COMPRIMÉ AVEC PERTE
Publication
Application
Priority
- DE 102016104665 A 20160314
- EP 2017055820 W 20170313
Abstract (en)
[origin: WO2017157841A1] The present invention relates to a method for conditioning an audio signal 2 subjected to lossy compression, comprising the following steps: - provision of an audio signal 2 subjected to lossy compression, - transfer of the audio signal 2 to a frequency spectrum in which energies of the audio signal 2 are correlated with frequencies of the audio signal 2, - ascertainment of the frequencies fi of local amplitude maxima in the frequency spectrum, - stipulation of a first selection criterion and preselection of the frequencies fi of two directly successive local amplitude maxima, which frequencies satisfy the first selection criterion, - stipulation of a second selection criterion and selection of preselected frequencies fi, satisfying the first selection criterion, of two directly successive local amplitude maxima, which frequencies additionally satisfy the second selection criterion, - generation of an audio filler signal (AFS) and - conditioning of the audio signal 2 by introducing the audio filler signal (AFS) into a frequency range between the frequencies fi that satisfy the second selection criterion, so that the frequency range is filled with the audio filler signal (AFS) at least in sections, in particular completely.
IPC 8 full level
G10L 19/02 (2013.01); G10L 21/02 (2013.01)
CPC (source: EP US)
G10L 19/0017 (2013.01 - US); G10L 19/008 (2013.01 - US); G10L 19/012 (2013.01 - US); G10L 19/0208 (2013.01 - EP US); G10L 21/0364 (2013.01 - EP US)
Citation (search report)
See references of WO 2017157841A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DE 102016104665 A1 20170914; CN 108174614 A 20180615; CN 108174614 B 20181228; EP 3403260 A1 20181121; EP 3403260 B1 20200304; US 10734000 B2 20200804; US 2019080702 A1 20190314; WO 2017157841 A1 20170921
DOCDB simple family (application)
DE 102016104665 A 20160314; CN 201780003220 A 20170313; EP 17711600 A 20170313; EP 2017055820 W 20170313; US 201716076880 A 20170313