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Intelligibilité de la parole masquée et rôle de la direction de la source masquante

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The problem of speech intelligibility of frontal direction with connected speech or noise as masking signal has been investigated. The level and direction of the masking signals were varied, and the measurement was obtained by means of the Speech Reception Threshold (SRT). First, the results of the adjustment and adaptative methods were compared, and the correlation between the SRT in quiet and the hearing threshold for two groups of hearing subjects was carried out. The variations of the spatial differences of the masking effect and of the SRT with the width of the noise band were measured. For the latter measurements, various connected speeches were used as masking signals: the results showed differences in SRP independent of the signal levels and spectral shapes.


On a examiné le problème de l'intelligibilité de la parole de direction frontale en fonction de la direction et du niveau d'un bruit ou d'une parole continue masquants. La mesure a été faite en mesurant le Seuil de Réception de la Parole (SRP). Au préalable, on a comparé les résultats de la méthode d'ajustement et de la méthode adaptative, ainsi que les mesures de corrélation entre le SRP dans le silence et le seuil d'audition obtenues pour deux groupes d'auditeurs. On a mesuré les variations du démasquage et du SRP en fonction de la largeur de la bande de bruit. Les dernières mesures ont utilisé comme signaux masquants des paroles continues et ont montré des différences de SRP indépendantes du niveau et du spectre du masque.


Es wird das Problem der Verständlichkeit von Sprache aus frontaler Richtung in Abhängigkeit von der Richtung und dem Pegel eines maskierenden Geräusches oder von maskierender fortlaufender Sprache untersucht. Die Messungen wurden ausgeführt durch Bestimmung der Sprachverständlichkeitsschwelle (SRP). Zuvor waren die Ergebnisse nach der Einstellmethode miteinander verglichen worden, ebenso die Korrelation zwischen der SRP und der Hörschwelle, die für zwei Gruppen von Hörern erhalten worden waren. Es wurden die Veränderungen der Verdeckung und der SRP in Abhängigkeit von der Bandbreite des Geräusches gemessen. Bei den letzteren Messungen wurde fortlaufende Sprache als verdeckendes Signal verwendet; sie haben gezeigt, daß die Unterschiede der SRP vom Pegel und vom Spektrum des Maskierers unabhängig sind.
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Document Type: Research Article

Publication date: July 1, 1986

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  • 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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