EP2369836B1 - Système de service audio tridimensionnel à base d'objet utilisant des scènes audio prédéfinies - Google Patents

Système de service audio tridimensionnel à base d'objet utilisant des scènes audio prédéfinies Download PDF

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Publication number
EP2369836B1
EP2369836B1 EP11159156.6A EP11159156A EP2369836B1 EP 2369836 B1 EP2369836 B1 EP 2369836B1 EP 11159156 A EP11159156 A EP 11159156A EP 2369836 B1 EP2369836 B1 EP 2369836B1
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Prior art keywords
audio
preset
objects
scenes
scene information
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EP11159156.6A
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German (de)
English (en)
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EP2369836A2 (fr
EP2369836A3 (fr
Inventor
Yong-Ju Lee
Tae-Jin Lee
Jae-Hyoun Yoo
Kyeong-Ok Kang
Jin-Woo Hong
In-Seon Jang
Jeong-Il Seo
Dae-Young Jang
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Electronics and Telecommunications Research Institute ETRI
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Electronics and Telecommunications Research Institute ETRI
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Priority claimed from KR1020060045184A external-priority patent/KR100802179B1/ko
Application filed by Electronics and Telecommunications Research Institute ETRI filed Critical Electronics and Telecommunications Research Institute ETRI
Priority to EP12171933.0A priority Critical patent/EP2501128B1/fr
Publication of EP2369836A2 publication Critical patent/EP2369836A2/fr
Publication of EP2369836A3 publication Critical patent/EP2369836A3/fr
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Publication of EP2369836B1 publication Critical patent/EP2369836B1/fr
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/86—Arrangements characterised by the broadcast information itself
    • H04H20/88—Stereophonic broadcast systems
    • H04H20/89—Stereophonic broadcast systems using three or more audio channels, e.g. triphonic or quadraphonic
    • 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
    • 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

Definitions

  • the present invention relates to an object-based three dimensional (3-D) audio service system using preset audio scenes and a method thereof; and, more particularly, to an object-based 3-D audio service system using preset audio scenes and a method thereof for providing an interactive service that enables a user or a viewer to directly form an audio scene using a 3-D audio related technology for providing realistic broadcasting to a user or a viewer.
  • 3-D three dimensional
  • Fig. 1 is a diagram illustrating a conventional audio service system.
  • the conventional audio service system includes an audio service providing apparatus 10 and an audio service reproducing apparatus 20.
  • the audio service providing apparatus 10 includes an audio-capture unit 11 for capturing an audio signal such as sound, an editing/mixing unit 12 for editing and mixing the captured audio signal to transmit the audio signal to an audio service reproducing apparatus 20, and a storing/transmitting unit 13 for storing the mixed audio signal and transmitting the mixed audio signal to the audio service reproducing apparatus 20.
  • the audio service reproducing apparatus 20 includes a receiver 21 for receiving an audio signal transmitted from the audio service providing apparatus in, a controller 22 for controlling the received audio signal, and a reproducer 23 for reproducing an audio signal.
  • An audio signal which is provided through broadcasting services such as TV broadcasting, radio broadcasting, and Digital Multimedia Broadcasting (DMB) based on the conventional audio service system, is generally created by mixing a plurality of audio signals captured from various sound sources.
  • broadcasting services such as TV broadcasting, radio broadcasting, and Digital Multimedia Broadcasting (DMB) based on the conventional audio service system
  • DMB Digital Multimedia Broadcasting
  • an audio signal provided through a soccer game broadcasting is created by mixing noises in a soccer stadium, yelling of a crowd, and a voice of an announcer.
  • the volume of the overall audio signal Although a user or a viewer can control the volume of the overall audio signal, it is impossible to control the volume of each object such as the voice of an announcer, the yelling of a crowd, and the noises of the soccer stadium. It is because the audio signal is transmitted after a plurality of object audio signals are mixed into one audio signal in a general broadcasting service.
  • a transmitter such as the audio service providing apparatus 10 independently transmits object audio signals of the sound sources without the object audio signals of the sound sources mixed to one audio signal
  • a receiver such as the audio service reproducing apparatus 20 can independently control the volumes of the object audio signals of the sound sources.
  • An object-based audio service denotes such an audio service that allows a user or a viewer to control each of the object audio signals at a receiver by independently transmitting the object audio signals of the sound sources through a transmitter.
  • an audio signal of a soccer game broadcasting is provided based on an object-based 3-D audio service
  • a user or a viewer can control each of objects, such as the noises in the soccer stadium, the yelling of the crowd, and the voices of an announcer to obtain a desired audio setting. That is, a user or a viewer can control the noise of the soccer stadium loud, the yelling of the crowd soft, and the voice of the announcer loud. Or, a viewer can control the audio signal to reproduce only the noises of the soccer stadium and the voice of an announcer without the yelling of the crowd reproduced.
  • Kalva H. et al. discloses a method for delivering audio-visual services based on MPEG-4.
  • algorithms to schedule the delivery of object-based audio-visual presentations in general and MPEG-4 presentations are disclosed.
  • the document US 6,665 , 318 B1 describes a video stream decoder which includes a demultiplexing unit for demultiplexing a video stream containing at least one or more object encoded visual or audio data and one or more scene descriptions which express scene contents by object encoded data; a decoder unit for decoding the object encoded visual data; a decoder unit for decoding the object encoded audio data; a visual synthesizing unit for synthesizing images corresponding to the object encoded visual data; an audio synthesizing unit for synthesizing sounds corresponding to the object encoded audio data; an analyzing unit for analyzing each scene description; and a selector for selecting one of at least two or more scene descriptions contained in the video stream.
  • An embodiment of the present invention is directed to providing an object-based three dimensional (3-D) audio service system and a method thereof for enabling a user to easily and conveniently watch and listen an object-based 3-D audio service by eliminating inconvenience that requires a user to control each of object audio signals of sound sources.
  • an object-based three dimensional (3-D) audio service providing apparatus using preset audio scenes including: audio input means for inputting an audio signal; preset audio scene generating means for extracting object audio signals from the audio signal inputted through the audio input means and generating more than one of 3-D audio scene information by arranging the extracted object audio signals in a 3-D space and editing features of each object; and encoding means for encoding and multiplexing the audio signal and the 3-D audio scene information for each object audio signal.
  • an object-based 3-D audio service reproducing apparatus using preset audio scenes including: decoding means for de-multiplexing and decoding object-based 3-D audio contents; audio scene forming means for forming 3-D audio scene information according to one selected from a plurality of 3-D audio scene information in the de-multiplexed and decoded object-based 3-D audio contents by a user including a viewer; audio signal mixing means for controlling features of objects in an audio signal of the de-multiplexed and decoded object-based 3-D audio contents according to the formed 3-D audio scene information; and reproducing means for reproducing the audio signal with one of the features controlled.
  • a method for providing an object-based 3-D audio service using preset audio scenes including the steps of: inputting an audio signal; extracting object audio signals from the inputted audio signal and generating more than one of 3-D audio scene information by arranging the extracted object audio signals in a 3-D space and editing features of each object; and encoding and multiplexing the audio signal and the 3-D audio scene information for each object audio signal.
  • a method for reproducing object-based 3-D audio service using preset audio scenes including the steps of: de-multiplexing and decoding object-based 3-D audio contents; forming 3-D audio scene information according to one selected from a plurality of 3-D audio scene information in the de-multiplexed and decoded object-based 3-D audio contents by a user including a viewer; controlling features of objects in an audio signal of the de-multiplexed and decoded object-based 3-D audio contents according to the formed 3-D audio scene information; and reproducing the audio signal with one of the features controlled.
  • An object-based three dimensional (3-D) audio service system and a method thereof according to the present invention provides previously generated preset audio scenes to a user or a viewer with an object-based 3-D audio service applied to all broadcasting services and multimedia services providing audio, such as digital broadcasting, radio broadcasting. Digital Multimedia Broadcasting (DMB), Internet broadcasting, digital movies, Digital Video Disk (DVD), and moving picture contents. Therefore, the object-based 3-D audio service system and a method thereof according to the present invention eliminates the inconvenience of a user to control each of object audio signals of sound sources and enables the user to easily and conveniently watch and listen the object-based 3-D audio service.
  • DMB Digital Multimedia Broadcasting
  • DVD Digital Video Disk
  • the present invention can be applied to broadcasting services and multimedia services providing audio, such as digital broadcasting, radio broadcasting, DMB, Internet broadcasting, digital movies, DVD, and moving picture contents, and the present invention is not limited to the types of mediums for transmitting and storing object-based audio contents for broadcasting and multimedia services providing audio.
  • Fig. 2 is a block diagram illustrating an object-based three-dimensional (3-D) audio service system using preset audio scenes in accordance with an embodiment of the present invention.
  • the object-based 3-D audio service system includes an object-based 3-D audio service providing apparatus 30, a transmitting medium 50, and an object-based 3-D audio service reproducing apparatus 40.
  • the 3-D service providing apparatus 30 receives an audio signal through various input devices, creates more than one of object-based 3-D audio scene information which can be selected by a user or a viewer, and transmits the created object-based 3-D audio scene information to the object-based 3-D audio service reproducing apparatus 40.
  • the transmitting medium 50 is a medium such as a digital broadcasting network or an Internet network for connecting the object-based 3-D audio service providing apparatus 30 and the object-based 3-D audio service reproducing apparatus 40 through a network.
  • the object-based 3-D audio service reproducing apparatus 40 generates more than one of 3-D audio scenes based on the object-based 3-D audio scene information transmitted from the object-based 3-D audio service providing apparatus 30.
  • the object-based 3-D audio service providing apparatus 30 includes an input unit 31, a preset audio scene generator 32, an encoder 33, and a transmitter 34.
  • the input unit 31 receives audio signals through various input devices.
  • the preset audio scene generator 32 extracts object-based audio signals (hereinafter, object audio signals) from the audio signal received through the input unit 31, arranges the extracted object audio signals in a three dimensional space, and creates more than one of 3-D audio scene information by editing features such as a location, a size, a direction, and a sound field environment of each object.
  • the encoder 33 encodes and multiplexes the audio signal inputted through the input unit 31 and the object-based 3-D audio scene information created by the preset audio scene generating unit 32 for transmitting the input audio signal and the generated preset audio scene information to the object-based 3-D audio service reproducing apparatus 40.
  • the input audio signals and the generated preset audio scene information are multiplexed to a moving picture experts group 4 (MPEG-4) file format in a digital broadcasting network.
  • MPEG-4 moving picture experts group 4
  • the transmitter 34 transforms the multiplexed object-based audio contents including the input audio signal and the created object-based 3-D audio scene information from the encoding unit 33 to a transport format.
  • the transmitter 34 transforms the multiplexed object-based audio contents to a MPEG-2 transport stream (TS) for a digital broadcasting network.
  • TS MPEG-2 transport stream
  • the transformed object-based audio contents including the input audio signal and the generated object-based 3-D audio scene information may be transmitted to the object-based 3-D audio reproducing apparatus 40 and may be stored in a storing medium.
  • the transmitter 34 may transmit the object-based audio contents including the input audio signal and the object-based 3-D audio scene information to the object-based 3-D audio reproducing apparatus 40 through a digital broadcasting network such as a terrestrial DMB channel 50.
  • a digital broadcasting network such as a terrestrial DMB channel 50.
  • the preset audio scene generator 32 uses a Convolutive Blind Source Separation technique to extract object audio signals. Especially, the preset audio scene generator 32 forms more than one of object-based 3-D audio scene information by controlling a ratio of each object-based the audio scene information of each object audio signal, which is set according to the control of a user such as an editor.
  • the object-based 3-D audio service reproducing apparatus 40 includes a decoder 42, an audio scene information forming unit 43, an audio signal mixer 44, and an audio signal reproducer 45.
  • the decoder 42 de-multiplexes and decodes object-based audio contents including an audio signal and object-based 3-D audio scene information for reproducing.
  • the audio scene information forming unit 43 provides the object-based 3-D audio scene information of the object-based 3-D audio contents, which is de-multiplexed and decoded by the decoder 42, to a user such as a viewer to select, and forms the object-based 3-D audio scene information according to the user selection.
  • the audio signal mixer 44 mixes object audio signals of the audio signal of the de-multiplexed and decoded object-based 3-D audio contents from the decoder 42 by controlling features of each object, such as a location, a direction, a size, and a sound field of each object according to the object-based 3-D audio scene information formed by the audio scene information forming unit 43.
  • the audio signal reproducer 45 reproduces the audio signal mixed to one object-based 3-D audio scenes by the audio signal mixer 44.
  • the object-based audio contents including the audio signal and the object-based 3-D audio scene information may be provided through a broadcasting service or a multimedia service such as digital broadcasting, radio broadcasting. Digital Multimedia Broadcasting (DMB), Internet broadcasting, digital movies. Digital Video Disk (DVD), and moving picture contents.
  • DMB Digital Multimedia Broadcasting
  • DVD Digital Video Disk
  • the object-based audio contents may be received through the receiver 41 in the present embodiment, the present invention is not limited thereto. That is, the object-based audio contents may be provided through a transmission medium or a storage medium that can provide a broadcasting service or a multimedia service that provides an audio.
  • the audio scene information forming unit 43 enables a user or a viewer to select features of objects such as a location, a direction, a volume, and a sound field environment of each object and forms new object-based 3-D audio scene information according to the features including a location, a direction, a volume, and a sound field environment of each object set by the user.
  • a user or a viewer can control features of a 3-D audio space by changing a reverberation time of a 3-D space through controlling a volume and a delay time of an initial reflected sound through the audio scene information forming unit 43.
  • the object-based 3-D audio service system using the preset audio scene according to the present embodiment previously generates object-based 3-D audio scenes that are expected to be frequently used and provides the generated object-based 3-D audio scenes as preset audio scenes to a user or a viewer. That is, the object-based 3-D audio service system according to the present embodiment enables a user or a viewer to select one of the preset audio scenes in order to make a user to conveniently watch and listen a broadcasting program with the desired audio preference.
  • noises of a soccer stadium, yelling of a crowd, a voice of an announcer are defined as audio objects for a soccer game broadcasting, and the defined audio objects are transmitted independently.
  • the audio objects a. first audio scene having information about volume of the noises of soccer stadium, the yelling of a crowd, and the voice of an announcer set to 1:1:1, a second audio scene having information about volume of the noises of a soccer stadium, the yelling of a crowd, and the voice of an announcer set to 1:0.5:1, and an audio scene halving information about volume of the noises of a soccer stadium, the yelling of a crowd, and the voice of an announcer set to 1:0:1 are transmitted as the preset audio scenes. Then, a user or a viewer selects one of the preset audio scenes to watch and listen the soccer game broadcasting with the desired audio preference.
  • a user may directly control each of the audio objects if the user cannot find a desired audio scene from the provided audio scenes.
  • Fig. 3 is a flowchart illustrating a method for providing an object-based audio service using preset audio scenes in accordance with an embodiment of the present invention.
  • the input unit 31 of the object-based 3-D audio service providing apparatus 30 receives an object-based audio signal through carious input device at step S301.
  • the preset audio scene generator 32 extracts object-based audio signals, that is, object audio signals, front the audio signal inputted through the input unit 31 at step S302. Then, the preset audio scene generator 32 generates more than one of object-based 3-D audio scene information at step s304 by arranging the extracted object: audio signals in a 3-D space and editing the features of each object audio signal such as a location, a direction, a volume, and a sound field environment of the audio object at step S303.
  • the encoder 33 encodes and multiplexers the audio signal inputted through the input unit 31 and the object-based 3-D audio scene information generated by the preset audio scene generator 32 at step S305. For example, the encoder 33 encodes and multiplexes the audio signal and the object-based 3-D audio scene information into MPEG-4 file format for a digital broadcasting network.
  • the transmitter 34 transforms the multiplexed object-based audio contents including the audio signal and the object-based 3-D audio scene information to be proper to a transport format and transmits the transformed object-based audio contents at step S306.
  • the multiplexed object-based audio contents are transformed to a MFEG-2 TS in a digital broadcasting network.
  • the transmitter 34 transmits the transformed object-based audio contents including the audio signal and the object-based 3-D audio scene information to the object-based 3-D audio reproducing apparatus 40 through a digital broadcasting network such as a terrestrial DMB channel.
  • the transformed object-based audio contents including the audio signal and the object-based 3-D audio scene information may be stored in a storing medium.
  • Fig. 4 is a flowchart illustrating a method for reproducing an object-based 3-D audio service using preset audio scenes in accordance with an embodiment of the present invention.
  • the receiver 41 of the object-based 3-D audio service reproducing apparatus 40 receives the object-based audio contents including an audio signal and object-based 3-D audio information through, for example, a digital broadcasting network such as a terrestrial DMB channel 50 or the Internet network at step S401.
  • a digital broadcasting network such as a terrestrial DMB channel 50 or the Internet network at step S401.
  • the receiver 41 may receive the object-based audio contents through a transmission medium that can provide a broadcasting service or a multimedia service that provides an audio. Or, the object-based audio contents may be inputted through the storing medium.
  • the decoder 42 de-multiplexes and decodes the received or inputted object-based audio contents including the audio signal and the object-based 3-D audio scene information at step S402.
  • the audio scene information forming unit 43 provides the object-based 3-D audio scene information of the de-multiplexed and decoded object-based 3-D audio contents to a user or a viewer to select, and forms object-based 3-D audio scene information according to the user selection at step S403.
  • the audio signal mixer 44 mixers object audio signals by controlling features of objects in the audio signal of the de-multiplexed and decoded object-based 3-D audio contents, such as a location, a direction, a volume, and a sound field environment of each audio object, according to the object-based 3-D audio scene information formed by the audio scene information forming unit 43 at step S404.
  • the audio signal reproducer 45 reproduces the audio signal mixed based on one of the object-based 3-D audio scenes by the audio signal mixer 44 at step S405.
  • the above described method according to the present invention can be embodied as a program and stored on a computer readable recording medium.
  • the computer readable recording medium is any data storage device that can store data which can be thereafter read by the computer system.
  • the computer readable recording medium includes a read-only memory (ROM), a random-access memory (RAM), a CD-ROM, a floppy disk, a hard disk and an optical magnetic disk.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Stereophonic System (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Reverberation, Karaoke And Other Acoustics (AREA)

Claims (8)

  1. Appareil fournissant un service audio basé sur des objets (30), comprenant :
    des moyens de génération de scène audio préétablie (32) destinés à générer une pluralité de scènes audio préétablies, dans lequel chaque scène audio préétablie est basée sur des informations de scène audio 3D qui indique des particularités d'une pluralité d'objets audio ; et
    des moyens de codage (33) destiné à coder et multiplexer la pluralité d'objets audio et la pluralité de scènes audio préétablies,
    dans lequel les informations de scène audio 3D comprennent au moins l'un d'un emplacement, d'une taille, d'un volume, d'une direction et d'un environnement de champ sonore de chacun de la pluralité d'objets audio dans l'espace 3D.
  2. Appareil fournissant un service audio basé sur des objets (30) selon la revendication 1, comprenant en outre des moyens de traitement (34) destinés à traiter les objets audio codés et multiplexés.
  3. Appareil fournissant un service audio basé sur des objets selon la revendication 1, dans lequel les moyens de traitement (34) transmettent les objets audio codés et multiplexés à un terminal de reproduction audio (40) par l'intermédiaire d'un réseau de radiodiffusion numérique.
  4. Appareil de reproduction de service audio basé sur des objets (40) comprenant
    des moyens de décodage (42) destinés à démultiplexer et décoder des contenus audio basés sur les objets comprenant une pluralité d'objets audio et une pluralité de scènes audio préétablies ;
    des moyens de formation de scène audio (43) destinés à former l'une de ladite pluralité de scènes audio préétablies, dans lequel chaque scène audio préétablie est basée sur des informations de scène audio 3D qui indiquent des particularités de ladite pluralité d'objets audio basée sur une sélection d'un utilisateur ;
    des moyens de mixage de signal audio (44) destiné à mixer la pluralité d'objets audio selon la scène audio préétablie formée ; et
    des moyens de reproduction (45) destinés à reproduire la pluralité mixée d'objets audio selon la scène audio préétablie formée,
    dans lequel les informations de scène audio 3D comprennent au moins l'un d'un emplacement, d'une taille, d'un volume, d'une direction et d'un environnement de champ sonore de chacun de la pluralité d'objets audio dans l'espace 3D.
  5. Procédé de fourniture de service audio basé sur des objets, comprenant :
    la génération (S304) d'une pluralité de scènes audio préétablies, où chaque scène audio préétablie est basée sur des informations de scène audio 3D qui indiquent des particularités d'une pluralité d'objets audio ; et
    le codage et le multiplexage (S305) de la pluralité d'objets audio et de la pluralité de scènes audio préétablies,
    dans lequel les informations de scène audio 3D comprennent au moins l'un d'un emplacement, d'une taille, d'un volume, d'une direction et d'un environnement de champ sonore de chacun de la pluralité d'objets audio dans l'espace 3D.
  6. Procédé selon la revendication 5, comprenant en outre l'étape de :
    traitement des objets audio codés et multiplexés.
  7. Procédé selon la revendication 6, dans lequel dans l'étape de traitement des objets audio, les objets audio codés et multiplexés sont transmis par l'intermédiaire d'un réseau de radiodiffusion numérique.
  8. Procédé de reproduction de service audio basé sur des objets, comprenant :
    le démultiplexage et le décodage (S402) de contenus audio basés sur les objets comprenant une pluralité d'objets audio et une pluralité de scènes audio préétablies ;
    la formation (S403) de l'une de ladite pluralité de scènes audio préétablies, où chaque scène audio préétablie est basée sur des informations de scène audio 3D qui indiquent des particularités de ladite pluralité d'objets audio basée sur une sélection d'un utilisateur ;
    le mixage (S404) de la pluralité d'objets audio selon la scène audio préétablie formée ; et
    la reproduction (S405) de la pluralité mixée d'objets audio selon la scène audio préétablie formée,
    dans lequel les informations de scène audio 3D comprennent au moins l'un d'un emplacement, d'une taille, d'un volume, d'une direction et d'un environnement de champ sonore de chacun de la pluralité d'objets audio dans l'espace 3D.
EP11159156.6A 2006-05-19 2007-05-16 Système de service audio tridimensionnel à base d'objet utilisant des scènes audio prédéfinies Active EP2369836B1 (fr)

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Application Number Priority Date Filing Date Title
EP12171933.0A EP2501128B1 (fr) 2006-05-19 2007-05-16 Système de service audio tridimensionnel à base d'objet utilisant des scènes audio prédéfinies

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KR1020060045184A KR100802179B1 (ko) 2005-12-08 2006-05-19 프리셋 오디오 장면을 이용한 객체기반 3차원 오디오서비스 시스템 및 그 방법
EP07746543A EP2022263B1 (fr) 2006-05-19 2007-05-16 Systeme de service audio tridimensionnel fonde sur l'objet utilisant des scenes audio fixees prealablement

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EP07746543A Division EP2022263B1 (fr) 2006-05-19 2007-05-16 Systeme de service audio tridimensionnel fonde sur l'objet utilisant des scenes audio fixees prealablement
EP07746543.3 Division 2007-05-16

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EP12171933.0A Division EP2501128B1 (fr) 2006-05-19 2007-05-16 Système de service audio tridimensionnel à base d'objet utilisant des scènes audio prédéfinies

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EP2369836A2 EP2369836A2 (fr) 2011-09-28
EP2369836A3 EP2369836A3 (fr) 2011-12-14
EP2369836B1 true EP2369836B1 (fr) 2014-04-23

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EP07746543A Active EP2022263B1 (fr) 2006-05-19 2007-05-16 Systeme de service audio tridimensionnel fonde sur l'objet utilisant des scenes audio fixees prealablement
EP12171933.0A Active EP2501128B1 (fr) 2006-05-19 2007-05-16 Système de service audio tridimensionnel à base d'objet utilisant des scènes audio prédéfinies

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EP2083584B1 (fr) 2008-01-23 2010-09-15 LG Electronics Inc. Procédé et appareil de traitement de signal audio
KR100998913B1 (ko) * 2008-01-23 2010-12-08 엘지전자 주식회사 오디오 신호의 처리 방법 및 이의 장치
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EP2369836A2 (fr) 2011-09-28
JP2014013400A (ja) 2014-01-23
JP5586950B2 (ja) 2014-09-10
WO2007136187A9 (fr) 2008-11-27
EP2022263A1 (fr) 2009-02-11
WO2007136187A1 (fr) 2007-11-29
EP2022263A4 (fr) 2010-06-02
EP2022263B1 (fr) 2012-08-01
EP2501128B1 (fr) 2014-11-12
EP2501128A1 (fr) 2012-09-19
EP2369836A3 (fr) 2011-12-14
JP2009537876A (ja) 2009-10-29

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