Perception du bruit extérieur d'un véhicule urbain de livraison

Abstract : The goal of this study was to identify the most unpleasant events parts of the noise of an urban delivery truck. More precisely, a psychophysical evaluation method, i.e. the analog categorical continuous assessment method, was applied to the unplesantness assessment of long duration sound. This method consits in continuously evaluating a perceptual parameter by moving a cursor sliding along a five categorie scale. The listener's task was to adjust the position of the cursor so that his sensation could be represented by the scale. A first experiment using artificial sounds made clear that the method can be used for evaluating the unpleasantness thought an influence of the temporal envelope of sounds appeared. A second experiment involved a real sound from a delivery truck. The continuous assessment method enabled to identifiy the most unplesant events and a free verbalizations method to characterise the unpleasantness of the corresponding sounds. Results obtained by the continuous assessment method This validated the use of the continuous assessment method for the evaluation of the unpleantness of a real sound sequence. Two others applications were made (influence of the gear box type on the perception and perception of the delivery sequence in house). Finally a last experiment showed that global judgement of a long sequence corresponds to the arithmetic mean of the local maxima of unpleasantness for each sound event of the sequence.
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  • HAL Id : tel-00131513, version 1

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Emilie Geissner. Perception du bruit extérieur d'un véhicule urbain de livraison. Acoustique [physics.class-ph]. INSA de Lyon, 2006. Français. ⟨tel-00131513⟩

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