EP2402943A3 - 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
EP2402943A3
EP2402943A3 EP20110182965 EP11182965A EP2402943A3 EP 2402943 A3 EP2402943 A3 EP 2402943A3 EP 20110182965 EP20110182965 EP 20110182965 EP 11182965 A EP11182965 A EP 11182965A EP 2402943 A3 EP2402943 A3 EP 2402943A3
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EP
European Patent Office
Prior art keywords
signal
synthesis
transient
creating
hand
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Application number
EP20110182965
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German (de)
French (fr)
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EP2402943A2 (en
EP2402943B1 (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 EP2402943A2 publication Critical patent/EP2402943A2/en
Publication of EP2402943A3 publication Critical patent/EP2402943A3/en
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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S5/00—Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation 
    • H04S5/005—Pseudo-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
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; 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
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/04—Circuit 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

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

Publications (3)

Publication Number Publication Date
EP2402943A2 EP2402943A2 (en) 2012-01-04
EP2402943A3 true EP2402943A3 (en) 2012-06-20
EP2402943B1 EP2402943B1 (en) 2016-08-24

Family

ID=38514551

Family Applications (3)

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

Family Applications Before (1)

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

Family Applications After (1)

Application Number Title Priority Date Filing Date
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) EP2402942B1 (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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JP4869352B2 (en) * 2005-12-13 2012-02-08 エヌエックスピー ビー ヴィ Apparatus and method for 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
US9495971B2 (en) 2007-08-27 2016-11-15 Telefonaktiebolaget Lm Ericsson (Publ) 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
CN102881294B (en) * 2008-03-10 2014-12-10 弗劳恩霍夫应用研究促进协会 Device and method for manipulating an audio signal having 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
CA2746507C (en) * 2008-12-11 2015-07-14 Andreas Walther 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
DK3576087T3 (en) * 2013-02-05 2021-05-31 Ericsson Telefon Ab L M Masking audio frame loss
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
CN112731519B (en) * 2019-10-28 2024-06-25 中国石油天然气集团有限公司 Method and device for determining tremor time interval

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JPH0715800A (en) * 1993-06-21 1995-01-17 Toshiba Corp Surround circuit
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US7231060B2 (en) 1997-08-26 2007-06-12 Color Kinetics Incorporated Systems and methods of generating control signals
US6928169B1 (en) * 1998-12-24 2005-08-09 Bose Corporation Audio signal processing
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KR20050021484A (en) * 2002-07-16 2005-03-07 코닌클리케 필립스 일렉트로닉스 엔.브이. Audio coding
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Also Published As

Publication number Publication date
CA2643862C (en) 2014-12-16
WO2007118533A1 (en) 2007-10-25
DE102006017280A1 (en) 2007-10-18
EP2005421B1 (en) 2013-06-26
EP2005421A1 (en) 2008-12-24
CN101421779B (en) 2013-04-17
US20120195434A1 (en) 2012-08-02
EP2402942A2 (en) 2012-01-04
HK1124951A1 (en) 2009-07-24
JP2009533910A (en) 2009-09-17
CA2643862A1 (en) 2007-10-25
US8577482B2 (en) 2013-11-05
ZA200809604B (en) 2010-03-31
US20070242833A1 (en) 2007-10-18
EP2402942A3 (en) 2012-05-23
PL2402943T3 (en) 2017-02-28
JP4664431B2 (en) 2011-04-06
CN101421779A (en) 2009-04-29
EP2402943A2 (en) 2012-01-04
EP2402943B1 (en) 2016-08-24
EP2402942B1 (en) 2016-06-01
US9326085B2 (en) 2016-04-26
ES2604133T3 (en) 2017-03-03

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