WO2004084577A1 - Groupement circulaire de microphones pour l'enregistrement sonore multicanaux - Google Patents

Groupement circulaire de microphones pour l'enregistrement sonore multicanaux Download PDF

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Publication number
WO2004084577A1
WO2004084577A1 PCT/NL2004/000169 NL2004000169W WO2004084577A1 WO 2004084577 A1 WO2004084577 A1 WO 2004084577A1 NL 2004000169 W NL2004000169 W NL 2004000169W WO 2004084577 A1 WO2004084577 A1 WO 2004084577A1
Authority
WO
WIPO (PCT)
Prior art keywords
microphones
output signals
virtual
microphone
audio system
Prior art date
Application number
PCT/NL2004/000169
Other languages
English (en)
Inventor
Edo M. Hulsebos
Diemer De Vries
Marinus Marias Boone
Thomas J. G. Schuurmans
Original Assignee
Technische Universiteit Delft
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 Technische Universiteit Delft filed Critical Technische Universiteit Delft
Priority to EP04722112A priority Critical patent/EP1606970A1/fr
Publication of WO2004084577A1 publication Critical patent/WO2004084577A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
    • H04R1/406—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/005—Circuits for transducers, loudspeakers or microphones for combining the signals of two or more microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/40—Details of arrangements for obtaining desired directional characteristic by combining a number of identical transducers covered by H04R1/40 but not provided for in any of its subgroups
    • H04R2201/401—2D or 3D arrays of transducers

Abstract

L'invention concerne un système de sonorisation comportant un groupement circulaire de microphones, qui comprend un certain nombre de microphones aménagés en cercle en vue de recevoir un champ acoustique. Un processeur de signal numérique est prévu pour traiter les signaux de sortie provenant des microphones. Afin de former des motifs de directivité distincts et bien réglés, le système de sonorisation met en oeuvre une intégration pondérée du champ acoustique sur des parties prédéterminées du cercle. L'intégration pondérée peut être mise en oeuvre dans un préprocesseur qui réduit le nombre de canaux en produisant un nombre inférieur de microphones virtuels ou en sélectionnant des microphones spécialement conçus.
PCT/NL2004/000169 2003-03-21 2004-03-19 Groupement circulaire de microphones pour l'enregistrement sonore multicanaux WO2004084577A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04722112A EP1606970A1 (fr) 2003-03-21 2004-03-19 Reseau circulaire de microphones pour enregistrement audio a plusieurs canaux

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP03075820.5 2003-03-21
EP03075820 2003-03-21

Publications (1)

Publication Number Publication Date
WO2004084577A1 true WO2004084577A1 (fr) 2004-09-30

Family

ID=33016933

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL2004/000169 WO2004084577A1 (fr) 2003-03-21 2004-03-19 Groupement circulaire de microphones pour l'enregistrement sonore multicanaux

Country Status (2)

Country Link
EP (1) EP1606970A1 (fr)
WO (1) WO2004084577A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009062210A1 (fr) * 2007-11-13 2009-05-22 Akg Acoustics Gmbh Microphone
US8345898B2 (en) 2008-02-26 2013-01-01 Akg Acoustics Gmbh Transducer assembly
US8472639B2 (en) 2007-11-13 2013-06-25 Akg Acoustics Gmbh Microphone arrangement having more than one pressure gradient transducer
US20130216047A1 (en) * 2010-02-24 2013-08-22 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Apparatus for generating an enhanced downmix signal, method for generating an enhanced downmix signal and computer program
CN103929694A (zh) * 2014-04-14 2014-07-16 杨璐馨 一种耳效3d听音环
US8923529B2 (en) 2008-08-29 2014-12-30 Biamp Systems Corporation Microphone array system and method for sound acquisition
US10284947B2 (en) * 2011-12-02 2019-05-07 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Apparatus and method for microphone positioning based on a spatial power density
WO2020053601A1 (fr) * 2018-09-14 2020-03-19 Squarehead Technology As Réseaux de microphones
US11494158B2 (en) 2018-05-31 2022-11-08 Shure Acquisition Holdings, Inc. Augmented reality microphone pick-up pattern visualization

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10349172B1 (en) * 2018-08-08 2019-07-09 Fortemedia, Inc. Microphone apparatus and method of adjusting directivity thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5952996A (ja) * 1982-09-20 1984-03-27 Nippon Telegr & Teleph Corp <Ntt> 可変指向性音響装置
EP0414264A2 (fr) * 1989-08-25 1991-02-27 Sony Corporation Appareil et procédé de microphone virtuel
US5715319A (en) * 1996-05-30 1998-02-03 Picturetel Corporation Method and apparatus for steerable and endfire superdirective microphone arrays with reduced analog-to-digital converter and computational requirements
US6192134B1 (en) * 1997-11-20 2001-02-20 Conexant Systems, Inc. System and method for a monolithic directional microphone array
WO2003009639A1 (fr) * 2001-07-19 2003-01-30 Vast Audio Pty Ltd Enregistrement d'une scene auditive tridimensionnelle et reproduction de cette scene pour un auditeur individuel

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5952996A (ja) * 1982-09-20 1984-03-27 Nippon Telegr & Teleph Corp <Ntt> 可変指向性音響装置
EP0414264A2 (fr) * 1989-08-25 1991-02-27 Sony Corporation Appareil et procédé de microphone virtuel
US5715319A (en) * 1996-05-30 1998-02-03 Picturetel Corporation Method and apparatus for steerable and endfire superdirective microphone arrays with reduced analog-to-digital converter and computational requirements
US6192134B1 (en) * 1997-11-20 2001-02-20 Conexant Systems, Inc. System and method for a monolithic directional microphone array
WO2003009639A1 (fr) * 2001-07-19 2003-01-30 Vast Audio Pty Ltd Enregistrement d'une scene auditive tridimensionnelle et reproduction de cette scene pour un auditeur individuel

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 008, no. 149 (E - 255) 12 July 1984 (1984-07-12) *

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009062210A1 (fr) * 2007-11-13 2009-05-22 Akg Acoustics Gmbh Microphone
US8472639B2 (en) 2007-11-13 2013-06-25 Akg Acoustics Gmbh Microphone arrangement having more than one pressure gradient transducer
US8345898B2 (en) 2008-02-26 2013-01-01 Akg Acoustics Gmbh Transducer assembly
US8923529B2 (en) 2008-08-29 2014-12-30 Biamp Systems Corporation Microphone array system and method for sound acquisition
US9462380B2 (en) 2008-08-29 2016-10-04 Biamp Systems Corporation Microphone array system and a method for sound acquisition
US20130216047A1 (en) * 2010-02-24 2013-08-22 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Apparatus for generating an enhanced downmix signal, method for generating an enhanced downmix signal and computer program
US9357305B2 (en) * 2010-02-24 2016-05-31 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Apparatus for generating an enhanced downmix signal, method for generating an enhanced downmix signal and computer program
US10284947B2 (en) * 2011-12-02 2019-05-07 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Apparatus and method for microphone positioning based on a spatial power density
CN103929694A (zh) * 2014-04-14 2014-07-16 杨璐馨 一种耳效3d听音环
US11494158B2 (en) 2018-05-31 2022-11-08 Shure Acquisition Holdings, Inc. Augmented reality microphone pick-up pattern visualization
WO2020053601A1 (fr) * 2018-09-14 2020-03-19 Squarehead Technology As Réseaux de microphones
US11832051B2 (en) 2018-09-14 2023-11-28 Squarehead Technology As Microphone arrays

Also Published As

Publication number Publication date
EP1606970A1 (fr) 2005-12-21

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