EP 2860728 A1 20150415 - Method and apparatus for encoding and for decoding directional side information
Title (en)
Method and apparatus for encoding and for decoding directional side information
Title (de)
Verfahren und Vorrichtung zur Codierung und Decodierung gerichteter Nebeninformationen
Title (fr)
Procédé et appareil de codage et de décodage d'informations secondaires directionnelles
Publication
Application
Priority
EP 13306391 A 20131009
Abstract (en)
A Higher Order Ambisonics (HOA) representation causes a high data rate. Thus, compression of HOA representations is desirable by decomposing the HOA representation into a directional component and a residual ambient component. The directional component requires directional side information. The overall compression can be improved by coding (18) that directional side information using a specific quantisation of dominant signal direction values ( (k)), and by establishing a vector ( a ( k )) that defines which directions from a set of pre-defined directions are present in a current audio signal frame ( C ( k )) .
IPC 8 full level
G10L 19/008 (2013.01); H04S 3/00 (2006.01)
CPC (source: EP)
G10L 19/008 (2013.01); H04S 2420/03 (2013.01); H04S 2420/11 (2013.01)
Citation (applicant)
- EP 12305537 A 20120514
- EP 12306569 A 20121212
- EP 13305558 A 20130429
- EP 13305156 A 20130208
Citation (search report)
- [XAI] US 2011249821 A1 20111013 - JAILLET FLORENT [FR], et al
- [XAI] US 2007269063 A1 20071122 - GOODWIN MICHAEL [US], et al
- [A] US 2009083044 A1 20090326 - BRIAND MANUEL [FR], et al
- [XAI] MANUEL BRIAND: "Codage paramétrique basé sur l'Analyse en Composante Principale", 20 March 2007 (2007-03-20), pages 133 - 147, XP002661237, Retrieved from the Internet <URL:http://tel.archives-ouvertes.fr/docs/00/14/18/62/PDF/2007_Briand_ParametricAudioCoding.pdf> [retrieved on 20101013]
- [A] JING WANG ET AL: "Context-based adaptive arithmetic coding in time and frequency domain for the lossless compression of audio coding parameters at variable rate", EURASIP JOURNAL ON AUDIO, SPEECH, AND MUSIC PROCESSING, 21 May 2013 (2013-05-21), pages 1, XP055104567, Retrieved from the Internet <URL:http://asmp.eurasipjournals.com/content/pdf/1687-4722-2013-9.pdf> [retrieved on 20140226]
- [A] HIRVONEN TONI ET AL: "Perceptual Compression Methods for Metadata in Directional Audio Coding Applied to Audiovisual Teleconference", AES CONVENTION 126; MAY 2009, AES, 60 EAST 42ND STREET, ROOM 2520 NEW YORK 10165-2520, USA, 7 May 2009 (2009-05-07), XP040508988
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)
DOCDB simple family (application)
EP 13306391 A 20131009