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A diagnostic system measuring or thogonal factors of sound fields in a scale model of auditorium

Identifieur interne : 002565 ( Main/Exploration ); précédent : 002564; suivant : 002566

A diagnostic system measuring or thogonal factors of sound fields in a scale model of auditorium

Auteurs : M. Sakurai [Japon] ; S. Aizawa [Japon] ; Y. Suzumura [Japon] ; Y. Ando [Japon]

Source :

Journal of sound and vibration [ 0022-460X ] ; 2000.

RBID : Pascal:00-0261852

Descripteurs français

Pascal (Inist)
- Acoustique architecturale, Source sonore, Auditorium, Autocorrélation, Corrélation croisée, Voie auditive, Hémisphère cérébral, Réponse impulsion, Temps réverbération, Evaluation subjective, Energie acoustique, Fonction autocorrélation, Temps retard, Réflecteur, Système mesure, 4355.

English descriptors

KwdEn :
- Acoustic energy, Architectural acoustics, Auditorium, Auditory pathway, Autocorrelation, Autocorrelation function, Cerebral hemisphere, Cross correlation, Delay time, Measuring system, Pulse response, Reflector, Reverberation time, Sound source, Subjective evaluation.

Abstract

Based on the model of auditory-brain system which consists of the autocorrelation mechanism, the interaural cross-correlation mechanism between both the auditory pathways, and the specialization of human cerebral hemispheres (Y. Ando 1998 Architectural Acoustics, Blending Sound Sources, Sound Fields, and Listeners New York: AIP Press/Springer-Verlag), a new diagnostic system was developed. After obtaining the binaural impulse response, four orthogonal factors including the SPL, the initial time-delay gap between the direct sound and the first reflection, the subsequent reverberation time and the IACC can be analyzed for the calculation of the scale values of both global and individual subjective preferences. In addition, two more factors extracted from the interaural cross-correlation function τ_IACC and W_IACC, can be figured out. Also, the sound energy, ϕ(0), the effective duration, τ_e, and fine structures of autocorrelation function of sound signals including the magnitude of first maximum, ϕ₁, and its delay time, τ₁, can be analyzed. As an example of the measurement, effects of reflectors' array above the stage in a 1/10 scale model of auditorium at each seat are discussed here.

Affiliations:

Japon
Tokyo

Links toward previous steps (curation, corpus...)

to stream PascalFrancis, to step Corpus: 000737
to stream PascalFrancis, to step Curation: 000015
to stream PascalFrancis, to step Checkpoint: 000695
to stream Main, to step Merge: 002673
to stream Main, to step Curation: 002565

Le document en format XML

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<term>Voie auditive</term>
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<front><div type="abstract" xml:lang="en">Based on the model of auditory-brain system which consists of the autocorrelation mechanism, the interaural cross-correlation mechanism between both the auditory pathways, and the specialization of human cerebral hemispheres (Y. Ando 1998 Architectural Acoustics, Blending Sound Sources, Sound Fields, and Listeners New York: AIP Press/Springer-Verlag), a new diagnostic system was developed. After obtaining the binaural impulse response, four orthogonal factors including the SPL, the initial time-delay gap between the direct sound and the first reflection, the subsequent reverberation time and the IACC can be analyzed for the calculation of the scale values of both global and individual subjective preferences. In addition, two more factors extracted from the interaural cross-correlation function τ<sub>IACC</sub>
 and W<sub>IACC</sub>
, can be figured out. Also, the sound energy, ϕ(0), the effective duration, τ<sub>e</sub>
, and fine structures of autocorrelation function of sound signals including the magnitude of first maximum, ϕ<sub>1</sub>
, and its delay time, τ<sub>1</sub>
, can be analyzed. As an example of the measurement, effects of reflectors' array above the stage in a 1/10 scale model of auditorium at each seat are discussed here.</div>
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A diagnostic system measuring or thogonal factors of sound fields in a scale model of auditorium

A diagnostic system measuring or thogonal factors of sound fields in a scale model of auditorium

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri