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Application of a methodology for categorizing and differentiating urban soundscapes using acoustical descriptors and semantic-differential attributes



Application of a methodology for categorizing and differentiating urban soundscapes using acoustical descriptors and semantic-differential attributes



Journal of the Acoustical Society of America 134(1): 791-802



A subjective and physical categorization of an ambient sound is the first step to evaluate the soundscape and provides a basis for designing or adapting this ambient sound to match people's expectations. For this reason, the main goal of this work is to develop a categorization and differentiation analysis of soundscapes on the basis of acoustical and perceptual variables. A hierarchical cluster analysis, using 15 semantic-differential attributes and acoustical descriptors to include an equivalent sound-pressure level, maximum-minimum sound-pressure level, impulsiveness of the sound-pressure level, sound-pressure level time course, and spectral composition, was conducted to classify soundscapes into different typologies. This analysis identified 15 different soundscape typologies. Furthermore, based on a discriminant analysis the acoustical descriptors, the crest factor (impulsiveness of the sound-pressure level), and the sound level at 125 Hz were found to be the acoustical variables with the highest impact in the differentiation of the recognized types of soundscapes. Finally, to determine how the different soundscape typologies differed from each other, both subjectively and acoustically, a study was performed.

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Accession: 051607367

Download citation: RISBibTeXText

PMID: 23862885

DOI: 10.1121/1.4807804



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