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Effects of Frequency Characteristics of the Degree of Interaural Cross-Correlation and Sound Pressure Level on the Auditory Source Width

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Auditory Source Width (ASW) as an important factor for subjective judgement of concert halls. In this paper, the effects of the frequency characteristics of the degree of interaural cross-correlation and the sound pressure level on the ASW were investigated. The results of psychological experiments using two adjacent 1/3 octave band noises as stimuli indicate that the ASW is affected by the frequency characteristics of the degree of interaural cross-correlation and the sound pressure level, In addition, it is suggested that the ASW for a 2/3 octave band noise can be estimated by adding the ASW for the two 1/3 octave band noises composing the 2/3 octave hand noise. From the results of these experiments, a technical prediction model of the ASW was formulated.

Zusammenfassung

Die scheinbare Schallquellenbreite (ASW) ist ein wichtiger Faktor für die subjektive Beurteilung von Konzertsälen. In dieser Arbeit wird untersucht, wie sich die Frequenzabhängigkeit der interauralen Kreuzkorrelation und des Schalldruckpegels auf die ASW auswirkt. Die Ergebnisse psychoakustischer Versuche mit zwei aneinander anstoßenden Terzbandgeräuschen als Signal zeigen, daß die ASW durch die Frequenzabhängigkeit der interauralen Kreuzkorrelation und des Schalldruckpegels beeinflußt wird. Sie legen des weiteren nahe, die ASW für ein 2/3-oktavbreites Geräusch durch Addition der ASW für die zwei terzbandbreiten Geräusche zu ermitteln, die in dem 2/3-oktavbreiten Geräusch liegen. Aufgrund der Ergebnisse dieser Experimente wird ein technisches Vorhersagemodell für die ASW formuliert.

Sommaire

L'étendue auditive d'une source est un facteur important pour les jugements de qualité des salles de concert. Dans cet article, nous étudions le rôle des caractéristiques spectrales de la fonction de corrélation interaurale et du niveau de pression acoustique sur ce facteur. Nous démontrons que ce rôle est bien réel, au moyen de tests effectués à l'aide de bandes de bruit de deux tiers d'octave adjacents. De plus, il semble bien que l'étendue correspondant à un bruit de deux tiers d'octave peut s'obtenir en ajoutant les étendues correspondant respectivement àchacun des deux tiers d'octaves constituent le bruit. Les résultats de ces expériences permettent d'établir un modè;le pour l'estimation de l'étendue auditive d'une source.
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Document Type: Research Article

Publication date: January 1, 1995

More about this publication?
  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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