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Subjective evaluation of effectiveness of noise abatement measures using ratio scaling

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Keilhacker, Peter ; Hellbrück, Jürgen:
Subjective evaluation of effectiveness of noise abatement measures using ratio scaling.
In: Inter-Noise 2013 : Noise Control for Quality of Live. - Innsbruck, 2013. - S. 648

Kurzfassung/Abstract

The study addresses the question, if subjective estimations of loudness reductions of noise abatement measures can be predicted from the loudness expressed in Sone. 30 persons had to answer the question: “How much softer is the attenuated noise compared to the not attenuated noise?” Estimations were made on a scale ranging from zero to 100% remaining loudness. The not attenuated noise consisted of recordings of various noise sources like road traffic noise, railway noise, brushcutter. The attenuated versions (e.g. auditory impression behind a noise barrier) of the respective noise sources were created using auralization. The ratio of the sone values (N5) of the attenuated and not attenuated noise was calculated to predict the judgments (e.g. 50% if ratio attenuated/not attenuated is ½).
The subjective estimations of remaining loudness were about 15% higher than the predicted values. Because the values of the predicted remaining loudness of all auralizations were between 0 and 35 % the distribution was right-skewed. It was assumed that this uneven distribution caused the discrepancy between predicted and empirical values. Using an even distribution in a second experiment the discrepancy declined to about 8%, which coincides with former results regarding ratio scaling of loudness of noise.

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Weitere Angaben

Publikationsform:Aufsatz in einem Buch
Schlagwörter:Sone Scale, Noise Abatement, Auralization
Institutionen der Universität:Philosophisch-Pädagogische Fakultät > Psychologie > Psychologie II - Professur für Allgemeine Psychologie II
Begutachteter Aufsatz:Nein
Titel an der KU entstanden:Ja
Eingestellt am:10. Feb 2014 13:46
Letzte Änderung:06. Mär 2014 15:10
URL zu dieser Anzeige:http://edoc.ku-eichstaett.de/13989/