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Effect of modulated delay time of reflection on autocorrelation function and perception of echo

Identifieur interne : 000109 ( PascalFrancis/Curation ); précédent : 000108; suivant : 000110

Effect of modulated delay time of reflection on autocorrelation function and perception of echo

Auteurs : J. Atagi [Japon] ; R. Weber [Allemagne] ; V. Mellert [Allemagne]

Source :

RBID : Pascal:03-0085592

Descripteurs français

English descriptors

Abstract

An indoor sound field can be regarded more or less as a time-variant system. In this paper, the time-variant model of the impulse response, which consists of a direct sound and a reflection with a modulated delay time, is applied to simulate such a time-variant sound field. The effects of the modulated delay time of reflection are investigated in terms of physical properties and subjective evaluation of the temporal fluctuation of a sound field. The physical properties of the temporal fluctuation are analyzed by using the autocorrelation function (ACF) of the sound field and identified by the factors and behavior of the ACF. To examine subjective evaluation of the temporal fluctuation of a sound field, listening tests on the perception of echo were conducted. Such subjective evaluation may be associated with the ACF of a sound field. The relationship between the physical properties and the subjective evaluation of the temporal fluctuation of a sound field is also discussed.
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A08 01  1  ENG  @1 Effect of modulated delay time of reflection on autocorrelation function and perception of echo
A09 01  1  ENG  @1 Concert hall acoustics and opera house acoustics
A11 01  1    @1 ATAGI (J.)
A11 02  1    @1 WEBER (R.)
A11 03  1    @1 MELLERT (V.)
A12 01  1    @1 ANDO (Y.) @9 ed.
A12 02  1    @1 POMPOLI (R.) @9 ed.
A14 01      @1 Graduate School of Science and Technology Kobe University, Rokkodai @2 Nada, Kobe, 657-8501 @3 JPN @Z 1 aut.
A14 02      @1 Department of physics, University of Oldenburg @2 26111 Oldenburg @3 DEU @Z 2 aut. @Z 3 aut.
A15 01      @1 Graduate School of Science and Technology, Kobe University, Rokkodai, Nada @2 Kobe 657-8501 @3 JPN @Z 1 aut.
A15 02      @1 Faculty of Engineering, University of Ferrara, Via Saragat @2 44 100 Ferrara @3 ITA @Z 2 aut.
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A23 01      @0 ENG
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A44       @0 0000 @1 © 2003 INIST-CNRS. All rights reserved.
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A60       @1 P @2 C
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C01 01    ENG  @0 An indoor sound field can be regarded more or less as a time-variant system. In this paper, the time-variant model of the impulse response, which consists of a direct sound and a reflection with a modulated delay time, is applied to simulate such a time-variant sound field. The effects of the modulated delay time of reflection are investigated in terms of physical properties and subjective evaluation of the temporal fluctuation of a sound field. The physical properties of the temporal fluctuation are analyzed by using the autocorrelation function (ACF) of the sound field and identified by the factors and behavior of the ACF. To examine subjective evaluation of the temporal fluctuation of a sound field, listening tests on the perception of echo were conducted. Such subjective evaluation may be associated with the ACF of a sound field. The relationship between the physical properties and the subjective evaluation of the temporal fluctuation of a sound field is also discussed.
C02 01  X    @0 002A26E04
C02 02  X    @0 001B40C55
C03 01  X  FRE  @0 Acoustique salle @5 01
C03 01  X  ENG  @0 Room acoustics @5 01
C03 01  X  SPA  @0 Acústica sala @5 01
C03 02  X  FRE  @0 Salle concert @5 02
C03 02  X  ENG  @0 Concert hall @5 02
C03 02  X  SPA  @0 Sala concierto @5 02
C03 03  X  FRE  @0 Réponse impulsion @5 04
C03 03  X  ENG  @0 Pulse response @5 04
C03 03  X  SPA  @0 Respuesta impulsión @5 04
C03 04  X  FRE  @0 Psychoacoustique @5 08
C03 04  X  ENG  @0 Psychoacoustics @5 08
C03 04  X  SPA  @0 Psicoacústico @5 08
C03 05  X  FRE  @0 Etude expérimentale @5 15
C03 05  X  ENG  @0 Experimental study @5 15
C03 05  X  SPA  @0 Estudio experimental @5 15
C03 06  X  FRE  @0 Temps retard @5 19
C03 06  X  ENG  @0 Delay time @5 19
C03 06  X  SPA  @0 Tiempo retardo @5 19
C03 07  X  FRE  @0 Fonction autocorrélation @5 20
C03 07  X  ENG  @0 Autocorrelation function @5 20
C03 07  X  SPA  @0 Función autocorrelación @5 20
C03 08  X  FRE  @0 Système paramètre variable @5 21
C03 08  X  ENG  @0 Time varying system @5 21
C03 08  X  SPA  @0 Sistema parámetro variable @5 21
C03 09  X  FRE  @0 4366 @2 PAC @4 INC @5 56
C03 10  X  FRE  @0 4355 @2 PAC @4 INC @5 57
N21       @1 048
N82       @1 PSI
pR  
A30 01  1  ENG  @1 ICA: International Conference on Acoustics @2 17 @3 Rome ITA @4 2001-09-03

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Pascal:03-0085592

Le document en format XML

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