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Withdrawn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Withdrawn legal-status Critical Current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

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
CN1264382C (en) 1999-12-24 2006-07-12 皇家菲利浦电子有限公司 Multichannel audio signal processing device
US6829018B2 (en) 2001-09-17 2004-12-07 Koninklijke Philips Electronics N.V. Three-dimensional sound creation assisted by visual information
WO2004093494A1 (en) * 2003-04-17 2004-10-28 Koninklijke Philips Electronics N.V. Audio signal generation
JP4834539B2 (en) * 2003-04-17 2011-12-14 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 signal synthesis
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
JP4917039B2 (en) * 2004-10-28 2012-04-18 ディーティーエス ワシントン，エルエルシー Acoustic space environment engine
EP1691348A1 (en) * 2005-02-14 2006-08-16 Ecole Polytechnique Federale De Lausanne Parametric joint-coding of audio sources
US8019086B2 (en) * 2006-11-16 2011-09-13 Texas Instruments Incorporated Stereo synthesizer using comb filters and intra-aural differences
US7920708B2 (en) * 2006-11-16 2011-04-05 Texas Instruments Incorporated Low computation mono to stereo conversion using 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
ATE557386T1 (en) * 2008-06-26 2012-05-15 France Telecom SPATIAL SYNTHESIS OF MULTI-CHANNEL SOUND SIGNALS
AU2010275712B2 (en) 2009-07-22 2015-08-13 Stormingswiss Gmbh Device and 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.
KR101662682B1 (en) * 2012-04-05 2016-10-05 후아웨이 테크놀러지 컴퍼니 리미티드 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
CN1129346C (en) 2003-11-26
JPH1094098A (en) 1998-04-10
EP0825800A2 (en) 1998-02-25
CN1175182A (en) 1998-03-04
US6005946A (en) 1999-12-21
DE19632734A1 (en) 1998-02-19

Similar Documents

Publication Publication Date Title
EP0825800A3 (en) Method and apparatus for generating multi-audio signals from a mono audio signal
HK1245555A1 (en) Advanced processing based on a complex-exponential-modulated filterbank and adaptive time signalling methods
EP1520447B1 (en) Method and device for generating data about the mutual position of at least three acoustic transducers
CA2423893A1 (en) Method of decoding two-channel matrix encoded audio to reconstruct multichannel audio
EP1087376A3 (en) Apparatus for electro-acoustic noise generation in a motor vehicle
DE69921532T2 (en) Synthesis of surround sound QSOUND from stereo signals
EP0838804A3 (en) Audio bandwidth extending system and method
JP2005530206A5 (en)
US4509191A (en) Electronic stereo reverberation device
JPH0237600B2 (en)
EP0746115A3 (en) Audio signal processing circuit for subband coding
WO1996012384B1 (en) Process for measuring the fidelity of stereophonic audio signals and process for recognising stereophonic audio signals coded together
JPS5913676Y2 (en) vocoder
EP0705054A3 (en) Sound reproduction system
JPS5679919A (en) Display unit for standard interval of generated tone
DE4313119A1 (en) Carrier for digitised sound signals and player for such a carrier
EP2169668A1 (en) Noise production with digital control data
JPS59172689A (en) Voice processing system
DE2640255A1 (en) Record and replay system for mono, stereo and quadraphonic signals - mixes extra stereo sum from plastic magnetic pick=up heads with normal stereo sum during recording

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

17P Request for examination filed

Effective date: 20060415

17Q First examination report despatched

Effective date: 20060621

AKX Designation fees paid

Designated state(s): DE FR GB IT

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20061104