EP 3559947 B1 20200902 - PROCESSING IN SUB-BANDS OF AN ACTUAL AMBISONIC CONTENT FOR IMPROVED DECODING
Title (en)
PROCESSING IN SUB-BANDS OF AN ACTUAL AMBISONIC CONTENT FOR IMPROVED DECODING
Title (de)
VERARBEITUNG IN SUBBÄNDERN EINES AKTUELLEN AMBISONIC-INHALTS ZUR VERBESSERTEN DEKODIERUNG
Title (fr)
TRAITEMENT EN SOUS-BANDES D'UN CONTENU AMBISONIQUE RÉEL POUR UN DÉCODAGE PERFECTIONNÉ
Publication
Application
Priority
- FR 1663079 A 20161221
- FR 2017053622 W 20171215
Abstract (en)
[origin: WO2018115666A1] The invention relates to a method implemented by computer means, for processing an ambisonic content comprising a plurality of ambisonic components of a plurality of orders defining a succession of ambisonic channels, in each of which an ambisonic component is represented, the method comprising: - frequency filtering of the ambisonic components in a plurality of frequency bands, - compiling an ambisonic decoding matrix (B), - processing the ambisonic decoding matrix (B) in order to extract, by matrix dimension reduction, a plurality of ambisonic decoding sub-matrices (B1, B2) each associated with an ambisonic order and a frequency band selected for this ambisonic order, - respective applications of the decoding sub-matrices to the ambisonic components in each selected frequency band, and a reconstruction, band by band, of the results of said respective applications, in order to deliver a plurality of decoded signals, each associated with a sound source.
IPC 8 full level
G10L 19/008 (2013.01); G10L 21/0272 (2013.01); H04S 3/00 (2006.01); H04S 3/02 (2006.01)
CPC (source: EP US)
G10L 19/008 (2013.01 - EP); G10L 21/0232 (2013.01 - US); G10L 21/0272 (2013.01 - EP); H04R 3/04 (2013.01 - US); H04R 5/04 (2013.01 - US); H04S 3/008 (2013.01 - EP); H04S 3/02 (2013.01 - EP); H04S 7/307 (2013.01 - US); G10L 2021/02163 (2013.01 - US); H04S 2420/11 (2013.01 - EP US)
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
DOCDB simple family (publication)
FR 3060830 A1 20180622; CN 110301003 A 20191001; CN 110301003 B 20230421; EP 3559947 A1 20191030; EP 3559947 B1 20200902; ES 2834087 T3 20210616; US 10687164 B2 20200616; US 2019335291 A1 20191031; WO 2018115666 A1 20180628
DOCDB simple family (application)
FR 1663079 A 20161221; CN 201780079018 A 20171215; EP 17829231 A 20171215; ES 17829231 T 20171215; FR 2017053622 W 20171215; US 201716471371 A 20171215