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Hearing Threshold and Equal Loudness Level Contours of 1/3-octave Noise Bands in a Diffuse Sound Field

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Hearing threshold levels and equal loudness level contours of 1/3-octave noise bands at 40 phon and 60 phon were measured for 27 normal hearing listeners in an approximately diffuse sound field. The threshold data in the frequency range 125 Hz to 1 kHz were 3–6 dB higher than the values given in ISO 226-1987, The equal loudness data in the frequency range 125 Hz to 500 Hz exceeded the ISO 226-1987 values by 5–10 dB.

Zusammenfassung

Für 27 normalhörende Versuchspersonen wurden die Hörschwellen und die Kurven gleicher Lautheit von terzbandbreitem Rauschen von 40 und 60 Phon in einem annähernd diffusen Schallfeld gemessen. Die Schwellen im Frequenzbereich zwischen 125 Hz und 1 kHz lagen 3–6 dB höher als die in ISO 226-1987 angegebenen Werte. Die Kurven gleicher Lautheit überschritten im Bereich von 125 Hz bis 500 Hz die ISO-Werte urn 5–10 dB.

Sommaire

Nous avons mesuré sur vingt-sept auditeurs otologiquement normaux les niveaux au seuil de détection et les lignes de niveaux d'isosonie de bandes de bruit d'un tiers d'octave à 40 phones et 60 phones. Les seuils déterminés dans l'intervalle de 125 Hz à 1 kHz sont supérieurs de 3 à 6 dB à ceux donnés par la norme ISO 226-1987. Les niveaux d'isosonie, dans l'intervalle de 125 Hz à 500 Hz, sont supérieurs de 5 à 10 dB à ceux de la même norme.
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Document Type: Research Article

Publication date: 01 May 1994

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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