MX2016000851A - Aparato y metodo para codificacion mejorada de objetos de audio espacial. - Google Patents

Aparato y metodo para codificacion mejorada de objetos de audio espacial.

Info

Publication number
MX2016000851A
MX2016000851A MX2016000851A MX2016000851A MX2016000851A MX 2016000851 A MX2016000851 A MX 2016000851A MX 2016000851 A MX2016000851 A MX 2016000851A MX 2016000851 A MX2016000851 A MX 2016000851A MX 2016000851 A MX2016000851 A MX 2016000851A
Authority
MX
Mexico
Prior art keywords
audio
information
downmix
processor
audio object
Prior art date
Application number
MX2016000851A
Other languages
English (en)
Other versions
MX357511B (es
Inventor
Harald Fuchs
Jürgen Herre
Oliver Hellmuth
Falko Ridderbusch
Jouni Paulus
Leon Terentiv
Sascha Disch
Adrian Murtaza
Original Assignee
Fraunhofer Ges Forschung
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from EP20130177378 external-priority patent/EP2830045A1/en
Application filed by Fraunhofer Ges Forschung filed Critical Fraunhofer Ges Forschung
Publication of MX2016000851A publication Critical patent/MX2016000851A/es
Publication of MX357511B publication Critical patent/MX357511B/es

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H04S3/02—Systems employing more than two channels, e.g. quadraphonic of the matrix type, i.e. in which input signals are combined algebraically, e.g. after having been phase shifted with respect to each other
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H04S3/006—Systems employing more than two channels, e.g. quadraphonic in which a plurality of audio signals are transformed in a combination of audio signals and modulated signals, e.g. CD-4 systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H04S3/008—Systems employing more than two channels, e.g. quadraphonic in which the audio signals are in digital form, i.e. employing more than two discrete digital channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
    • H04S7/30—Control circuits for electronic adaptation of the sound field
    • H04S7/305—Electronic adaptation of stereophonic audio signals to reverberation of the listening space
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S2400/00—Details of stereophonic systems covered by H04S but not provided for in its groups
    • H04S2400/01—Multi-channel, i.e. more than two input channels, sound reproduction with two speakers wherein the multi-channel information is substantially preserved
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S2400/00—Details of stereophonic systems covered by H04S but not provided for in its groups
    • H04S2400/03—Aspects of down-mixing multi-channel audio to configurations with lower numbers of playback channels, e.g. 7.1 -> 5.1
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S2400/00—Details of stereophonic systems covered by H04S but not provided for in its groups
    • H04S2400/11—Positioning of individual sound objects, e.g. moving airplane, within a sound field
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S2400/00—Details of stereophonic systems covered by H04S but not provided for in its groups
    • H04S2400/13—Aspects of volume control, not necessarily automatic, in stereophonic sound systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S2420/00—Techniques used stereophonic systems covered by H04S but not provided for in its groups
    • H04S2420/03—Application of parametric coding in stereophonic audio systems

Abstract

Un aparato para generar uno o más canales de salida de audio se proporciona. El aparato comprende un procesador de parámetros (110) para calcular información de mezclado y un procesador de downmix (120) para generar el uno o más canales de salida de audio. El procesador de downmix (120) se configura para recibir una señal de transporte de audio que comprende uno o más canales de transporte de audio. Una o más señales de canal de audio se mezclan dentro de la señal de transporte de audio, y uno o más señales de objeto de audio se mezclan dentro de la señal de transporte de audio, y en donde la cantidad del uno o más canales de transporte de audio es menor que la cantidad del una o más señales de canal de audio más la cantidad de la única o más señales de objeto de audio. El procesador de parámetros (110) se configura para recibir información de downmix lo que indica información sobre cómo la única o más señales de canal de audio y la única o más señales de objeto de audio se mezclan dentro del uno o más canales de transporte de audio, y en donde el procesador de parámetros (110) se configura para recibir información de covarianza. Más aún, el procesador de parámetros (110) se configura para calcular la información de mezclado dependiendo de la información de downmix y dependiendo de la información de covarianza. El procesador de downmix (120) se configura para generar el uno o más canales de salida de audio a partir de la señal de transporte de audio dependiendo de la información de mezclado. La información de covarianza indica una información de la diferencia de nivel para por lo menos una de la única o más señales de canal de audio y indica además una información de la diferencia de nivel para por lo menos uno del único o más señales de objeto de audio. Sin embargo, la información de covarianza no indica información de correlación para ningún par de una de la única o más señales de canal de audio y una de la única o más señales de objeto de audio.
MX2016000851A 2013-07-22 2014-07-17 Aparato y metodo para codificacion mejorada de objetos de audio espacial. MX357511B (es)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
EP20130177378 EP2830045A1 (en) 2013-07-22 2013-07-22 Concept for audio encoding and decoding for audio channels and audio objects
EP13177357 2013-07-22
EP13177371 2013-07-22
EP13189290.3A EP2830050A1 (en) 2013-07-22 2013-10-18 Apparatus and method for enhanced spatial audio object coding
PCT/EP2014/065427 WO2015011024A1 (en) 2013-07-22 2014-07-17 Apparatus and method for enhanced spatial audio object coding

Publications (2)

Publication Number Publication Date
MX2016000851A true MX2016000851A (es) 2016-04-27
MX357511B MX357511B (es) 2018-07-12

Family

ID=49385153

Family Applications (2)

Application Number Title Priority Date Filing Date
MX2016000914A MX355589B (es) 2013-07-22 2014-07-16 Aparato y metodo para realizar una mezcla descendente saoc de contenido de audio 3d.
MX2016000851A MX357511B (es) 2013-07-22 2014-07-17 Aparato y metodo para codificacion mejorada de objetos de audio espacial.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
MX2016000914A MX355589B (es) 2013-07-22 2014-07-16 Aparato y metodo para realizar una mezcla descendente saoc de contenido de audio 3d.

Country Status (19)

Country Link
US (4) US9578435B2 (es)
EP (4) EP2830050A1 (es)
JP (3) JP6395827B2 (es)
KR (2) KR101774796B1 (es)
CN (3) CN105593929B (es)
AU (2) AU2014295270B2 (es)
BR (2) BR112016001244B1 (es)
CA (2) CA2918529C (es)
ES (2) ES2768431T3 (es)
HK (1) HK1225505A1 (es)
MX (2) MX355589B (es)
MY (2) MY176990A (es)
PL (2) PL3025333T3 (es)
PT (1) PT3025333T (es)
RU (2) RU2666239C2 (es)
SG (2) SG11201600460UA (es)
TW (2) TWI560700B (es)
WO (2) WO2015010999A1 (es)
ZA (1) ZA201600984B (es)

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