EP2402942A3 - Method and device for creating an environmental signal - Google Patents

Method and device for creating an environmental signal Download PDF

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Publication number
EP2402942A3
EP2402942A3 EP11182960A EP11182960A EP2402942A3 EP 2402942 A3 EP2402942 A3 EP 2402942A3 EP 11182960 A EP11182960 A EP 11182960A EP 11182960 A EP11182960 A EP 11182960A EP 2402942 A3 EP2402942 A3 EP 2402942A3
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EP
European Patent Office
Prior art keywords
signal
synthesis
transient
creating
hand
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Application number
EP11182960A
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German (de)
French (fr)
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EP2402942B1 (en
EP2402942A2 (en
Inventor
Oliver Hellmuth
Jürgen HERRE
Stephan Geyersberger
Andreas Walther
Christiaan Janssen
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Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
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Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
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Publication of EP2402942A2 publication Critical patent/EP2402942A2/en
Publication of EP2402942A3 publication Critical patent/EP2402942A3/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04SSTEREOPHONIC SYSTEMS 
    • H04S5/00Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation 
    • H04S5/005Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation  of the pseudo five- or more-channel type, e.g. virtual surround
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00Speech 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
    • G10L19/008Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00Stereophonic arrangements
    • H04R5/04Circuit arrangements, e.g. for selective connection of amplifier inputs/outputs to loudspeakers, for loudspeaker detection, or for adaptation of settings to personal preferences or hearing impairments

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Stereophonic System (AREA)

Abstract

Zum Erzeugen eines Umgebungssignals, das zur Ausstrahlung über Lautsprecher geeignet ist, für die kein eigenes Lautsprechersignal existiert, also beispielsweise für Surround-Kanäle, ist ein Transienten-Detektor(11) vorgesehen, um einen Transientenzeitraum zu detektieren. Ein Synthesesignalgenerator(12) erzeugt ein Synthesesignal, das einerseits die Transientenbedingung und andererseits die Kontinuitätsbedingung für das Synthesesignal erfüllt. Ein Signalsubstituierer(14) ersetzt dann einen Abschnitt des Untersuchungssignals durch das Synthesesignal, um ein Umgebungssignal für die Surround-Kanäle zu erhalten.

Figure imgaf001
To generate an ambient signal which is suitable for transmission via loudspeakers for which no separate loudspeaker signal exists, that is to say for surround channels, for example, a transient detector (11) is provided in order to detect a transient period. A synthesis signal generator (12) generates a synthesis signal which, on the one hand, fulfills the transient condition and, on the other hand, the continuity condition for the synthesis signal. A signal substituter (14) then replaces a portion of the examination signal with the synthesis signal to obtain an ambient signal for the surround channels.
Figure imgaf001

EP11182960.2A 2006-04-12 2007-01-30 Method and device for creating an environmental signal Active EP2402942B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US74471806P 2006-04-12 2006-04-12
DE102006017280A DE102006017280A1 (en) 2006-04-12 2006-04-12 Ambience signal generating device for loudspeaker, has synthesis signal generator generating synthesis signal, and signal substituter substituting testing signal in transient period with synthesis signal to obtain ambience signal
EP07703145.8A EP2005421B1 (en) 2006-04-12 2007-01-30 Apparatus and method for production of a surrounding-area signal

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP07703145.8A Division EP2005421B1 (en) 2006-04-12 2007-01-30 Apparatus and method for production of a surrounding-area signal
EP07703145.8 Division 2007-01-30

Publications (3)

Publication Number Publication Date
EP2402942A2 EP2402942A2 (en) 2012-01-04
EP2402942A3 true EP2402942A3 (en) 2012-05-23
EP2402942B1 EP2402942B1 (en) 2016-06-01

Family

ID=38514551

Family Applications (3)

Application Number Title Priority Date Filing Date
EP11182965.1A Active EP2402943B1 (en) 2006-04-12 2007-01-30 Method and device for creating an environmental signal
EP07703145.8A Active EP2005421B1 (en) 2006-04-12 2007-01-30 Apparatus and method for production of a surrounding-area signal
EP11182960.2A Active EP2402942B1 (en) 2006-04-12 2007-01-30 Method and device for creating an environmental signal

Family Applications Before (2)

Application Number Title Priority Date Filing Date
EP11182965.1A Active EP2402943B1 (en) 2006-04-12 2007-01-30 Method and device for creating an environmental signal
EP07703145.8A Active EP2005421B1 (en) 2006-04-12 2007-01-30 Apparatus and method for production of a surrounding-area signal

Country Status (11)

Country Link
US (2) US8577482B2 (en)
EP (3) EP2402943B1 (en)
JP (1) JP4664431B2 (en)
CN (1) CN101421779B (en)
CA (1) CA2643862C (en)
DE (1) DE102006017280A1 (en)
ES (1) ES2604133T3 (en)
HK (1) HK1124951A1 (en)
PL (1) PL2402943T3 (en)
WO (1) WO2007118533A1 (en)
ZA (1) ZA200809604B (en)

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CN101326853B (en) * 2005-12-13 2011-11-23 Nxp股份有限公司 Device for and method of processing an audio data stream
GB2437337A (en) * 2006-04-21 2007-10-24 Snell & Wilcox Ltd Measuring block artefacts in video data using an auto-correlation function
US8379868B2 (en) * 2006-05-17 2013-02-19 Creative Technology Ltd Spatial audio coding based on universal spatial cues
JP2007316254A (en) * 2006-05-24 2007-12-06 Sony Corp Audio signal interpolation method and audio signal interpolation device
CN101790756B (en) * 2007-08-27 2012-09-05 爱立信电话股份有限公司 Transient detector and method for supporting encoding of an audio signal
DE102007048973B4 (en) 2007-10-12 2010-11-18 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method for generating a multi-channel signal with voice signal processing
ES2739667T3 (en) * 2008-03-10 2020-02-03 Fraunhofer Ges Forschung Device and method to manipulate an audio signal that has a transient event
CN101981811B (en) * 2008-03-31 2013-10-23 创新科技有限公司 Adaptive primary-ambient decomposition of audio signals
CN102246543B (en) * 2008-12-11 2014-06-18 弗兰霍菲尔运输应用研究公司 Apparatus for generating a multi-channel audio signal
EP2214165A3 (en) 2009-01-30 2010-09-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus, method and computer program for manipulating an audio signal comprising a transient event
CN102157151B (en) 2010-02-11 2012-10-03 华为技术有限公司 Encoding method, decoding method, device and system of multichannel signals
JP5307770B2 (en) * 2010-07-09 2013-10-02 シャープ株式会社 Audio signal processing apparatus, method, program, and recording medium
US8489391B2 (en) * 2010-08-05 2013-07-16 Stmicroelectronics Asia Pacific Pte., Ltd. Scalable hybrid auto coder for transient detection in advanced audio coding with spectral band replication
CN108847247B (en) * 2013-02-05 2023-04-07 瑞典爱立信有限公司 Audio frame loss concealment
DE102014214143B4 (en) * 2014-03-14 2015-12-31 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method for processing a signal in the frequency domain
US9820073B1 (en) 2017-05-10 2017-11-14 Tls Corp. Extracting a common signal from multiple audio signals

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JPH0715800A (en) * 1993-06-21 1995-01-17 Toshiba Corp Surround circuit
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JP2005533271A (en) * 2002-07-16 2005-11-04 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Audio encoding
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Also Published As

Publication number Publication date
EP2402943A3 (en) 2012-06-20
US20120195434A1 (en) 2012-08-02
CA2643862C (en) 2014-12-16
CN101421779B (en) 2013-04-17
EP2005421B1 (en) 2013-06-26
US20070242833A1 (en) 2007-10-18
EP2402942B1 (en) 2016-06-01
CN101421779A (en) 2009-04-29
US9326085B2 (en) 2016-04-26
CA2643862A1 (en) 2007-10-25
JP2009533910A (en) 2009-09-17
WO2007118533A1 (en) 2007-10-25
US8577482B2 (en) 2013-11-05
PL2402943T3 (en) 2017-02-28
EP2005421A1 (en) 2008-12-24
ZA200809604B (en) 2010-03-31
JP4664431B2 (en) 2011-04-06
EP2402942A2 (en) 2012-01-04
ES2604133T3 (en) 2017-03-03
EP2402943A2 (en) 2012-01-04
EP2402943B1 (en) 2016-08-24
HK1124951A1 (en) 2009-07-24
DE102006017280A1 (en) 2007-10-18

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