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EP0825800A3 - Method and apparatus for generating multi-audio signals from a mono audio signal - Google Patents

Method and apparatus for generating multi-audio signals from a mono audio signal Download PDF

Info

Publication number
EP0825800A3
EP0825800A3 EP97113292A EP97113292A EP0825800A3 EP 0825800 A3 EP0825800 A3 EP 0825800A3 EP 97113292 A EP97113292 A EP 97113292A EP 97113292 A EP97113292 A EP 97113292A EP 0825800 A3 EP0825800 A3 EP 0825800A3
Authority
EP
European Patent Office
Prior art keywords
signals
mono
audio signals
generating multi
audio signal
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP97113292A
Other languages
German (de)
French (fr)
Other versions
EP0825800A2 (en
Inventor
Imre Varga
Jürgen Schmidt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Deutsche Thomson Brandt GmbH
Original Assignee
Deutsche Thomson Brandt GmbH
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
Application filed by Deutsche Thomson Brandt GmbH filed Critical Deutsche Thomson Brandt GmbH
Publication of EP0825800A2 publication Critical patent/EP0825800A2/en
Publication of EP0825800A3 publication Critical patent/EP0825800A3/en
Withdrawn legal-status Critical Current

Links

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 
    • 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
    • H04S2420/07—Synergistic effects of band splitting and sub-band processing
    • 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

Landscapes

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

Abstract

Die Reproduktion von Mono-Audiosignalen führt zu einem unangenehmen Klangbild wegen des Mangels an Räumlichkeit. Deshalb ist es wünschenswert, ein Zweikanal-Signal aus dem einkanaligen Eingangssignal elektrisch zu erzeugen. Die bekannten Single-Band-Verfahren sind teilweise sehr aufwendig und bieten nur einen ungenügenden Eindruck von Räumlichkeit. Bei der Erfindung werden durch Filterung zunächst mehrere verschiedenartige Signale aus dem Mono-Eingangssignal gebildet und dann für jedes dieser verschiedenartigen Signale separat virtuelle Single-Band-Stereosignale generiert. Diese werden anschließend zu zwei Ausgangssignalen kombiniert.

Figure imgaf001
The reproduction of mono audio signals leads to an unpleasant sound due to the lack of space. Therefore, it is desirable to electrically generate a two-channel signal from the single-channel input signal. The known single-band methods are sometimes very expensive and offer only an insufficient impression of space. In the invention, several different signals are first formed by filtering from the mono input signal and then separately generated for each of these different types of signals virtual single-band stereo signals. These are then combined into two output signals.
Figure imgaf001
EP97113292A 1996-08-14 1997-08-01 Method and apparatus for generating multi-audio signals from a mono audio signal Withdrawn EP0825800A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19632734A DE19632734A1 (en) 1996-08-14 1996-08-14 Method and device for generating a multi-tone signal from a mono signal
DE19632734 1996-08-14

Publications (2)

Publication Number Publication Date
EP0825800A2 EP0825800A2 (en) 1998-02-25
EP0825800A3 true EP0825800A3 (en) 2006-03-15

Family

ID=7802595

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97113292A Withdrawn EP0825800A3 (en) 1996-08-14 1997-08-01 Method and apparatus for generating multi-audio signals from a mono audio signal

Country Status (5)

Country Link
US (1) US6005946A (en)
EP (1) EP0825800A3 (en)
JP (1) JPH1094098A (en)
CN (1) CN1129346C (en)
DE (1) DE19632734A1 (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE60042335D1 (en) 1999-12-24 2009-07-16 Koninkl Philips Electronics Nv MULTI-CHANNEL AUDIO SIGNAL PROCESSING UNIT
US6829018B2 (en) 2001-09-17 2004-12-07 Koninklijke Philips Electronics N.V. Three-dimensional sound creation assisted by visual information
BRPI0409337A (en) * 2003-04-17 2006-04-25 Koninkl Philips Electronics Nv method and device for synthesizing an output audio signal based on an input audio signal, apparatus for providing an output audio signal, and computer program product
ATE359687T1 (en) * 2003-04-17 2007-05-15 Koninkl Philips Electronics Nv AUDIO SIGNAL GENERATION
SE0301273D0 (en) * 2003-04-30 2003-04-30 Coding Technologies Sweden Ab Advanced processing based on a complex exponential-modulated filter bank and adaptive time signaling methods
CN100396162C (en) * 2004-07-14 2008-06-18 华南理工大学 Signal processing method for three-loudspeaker virtual 5.1 channel surround sound
US20070297519A1 (en) * 2004-10-28 2007-12-27 Jeffrey Thompson Audio Spatial Environment Engine
EP1691348A1 (en) * 2005-02-14 2006-08-16 Ecole Polytechnique Federale De Lausanne Parametric joint-coding of audio sources
US7920708B2 (en) * 2006-11-16 2011-04-05 Texas Instruments Incorporated Low computation mono to stereo conversion using intra-aural differences
US8019086B2 (en) * 2006-11-16 2011-09-13 Texas Instruments Incorporated Stereo synthesizer using comb filters and intra-aural differences
EP2124486A1 (en) * 2008-05-13 2009-11-25 Clemens Par Angle-dependent operating device or method for generating a pseudo-stereophonic audio signal
ES2387867T3 (en) * 2008-06-26 2012-10-03 FRANCE TéLéCOM Spatial synthesis of multichannel audio signals
CN102484763B (en) 2009-07-22 2016-01-06 斯托明瑞士有限责任公司 For equipment and the method for optimizing stereophonic or pseudo-stereophonic audio signals
CH703501A2 (en) 2010-08-03 2012-02-15 Stormingswiss Gmbh Device and method for evaluating and optimizing signals on the basis of algebraic invariants.
CH703771A2 (en) 2010-09-10 2012-03-15 Stormingswiss Gmbh Device and method for the temporal evaluation and optimization of stereophonic or pseudostereophonic signals.
CN103534753B (en) * 2012-04-05 2015-05-27 华为技术有限公司 Method for inter-channel difference estimation and spatial audio coding device
US9338552B2 (en) 2014-05-09 2016-05-10 Trifield Ip, Llc Coinciding low and high frequency localization panning
EP2980789A1 (en) * 2014-07-30 2016-02-03 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus and method for enhancing an audio signal, sound enhancing system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE973570C (en) * 1948-10-02 1960-03-31 Siemens Ag Device for the plastic reproduction of electroacoustic performances
US5301236A (en) * 1992-01-13 1994-04-05 Pioneer Electronic Corporation System for producing stereo-simulated signals for simulated-stereophonic sound

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4555795A (en) * 1982-07-22 1985-11-26 Tvi Systems, Ltd. Monaural to binaural audio processor
US5235646A (en) * 1990-06-15 1993-08-10 Wilde Martin D Method and apparatus for creating de-correlated audio output signals and audio recordings made thereby
JP2979848B2 (en) * 1992-07-01 1999-11-15 ヤマハ株式会社 Electronic musical instrument

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE973570C (en) * 1948-10-02 1960-03-31 Siemens Ag Device for the plastic reproduction of electroacoustic performances
US5301236A (en) * 1992-01-13 1994-04-05 Pioneer Electronic Corporation System for producing stereo-simulated signals for simulated-stereophonic sound

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SCHROEDER M R: "AN ARTIFICIAL STEREOPHONIC EFFECT OBTAINED FROM A SINGLE AUDIO SIGNAL", JOURNAL OF THE AUDIO ENGINEERING SOCIETY, AUDIO ENGINEERING SOCIETY, NEW YORK, NY, US, vol. 6, no. 2, 1 April 1958 (1958-04-01), pages 74 - 79, XP000604521, ISSN: 1549-4950 *

Also Published As

Publication number Publication date
CN1175182A (en) 1998-03-04
CN1129346C (en) 2003-11-26
US6005946A (en) 1999-12-21
DE19632734A1 (en) 1998-02-19
JPH1094098A (en) 1998-04-10
EP0825800A2 (en) 1998-02-25

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