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Physiological measures regress onto acoustic and perceptual features of soundscapes
KTH, School of Computer Science and Communication (CSC), Speech, Music and Hearing, TMH, Music Acoustics. Nanyang Technological University, Singapore.ORCID iD: 0000-0001-8121-9263
2013 (English)In: Proceedings of the 3rd International Conference on Music Emotion (ICME3) / [ed] Geoff Luck, Olivier Brabant, University of Jyväskylä, 2013Conference paper, Published paper (Refereed)
Abstract [en]

There is no exact model for the relationship between the autonomic nervous system (ANS) and evoked or perceived emotion. Music has long been a privileged field for exploration, while the contribution of soundscape research is more recent. It is known that health is influenced by the sonic environment, and the study here presented aimed to investigate the nature and strength of relationships between soundscape features and physiological responses linked to relaxation or stress. In a controlled experiment, seventeen healthy volunteers moved freely inside a physical installation listening to soundscape recordings of nature, urban parks, eateries, and shops, reproduced using 3D ambisonic techniques. Physiological responses were continuously captured, then detrended, downsampled, and analysed with multivariate linear regression onto orthogonal acoustic and perceptual stimuli features that had been previously determined. Measures of Peripheral Temperature regressed onto SoundMass, an acoustic feature, and onto Calm-to-Chaotic, a perceptual feature, in each case with a moderately sized effect. A smaller effect was found for Heart Rate onto VariabilityFocus, an acoustic feature, and for Skin Conductance onto the interaction between the acoustic features. These relationships could be coherently accounted for by neurophysiological theory of how ANS activation leads to emotional relaxation or stress. We discuss limitations of the present study and considerations for future soundscape emotion research, as well as more immediate practical implications.

Place, publisher, year, edition, pages
University of Jyväskylä, 2013.
Keyword [en]
physiology, acoustic features, soundscapes
National Category
Applied Psychology Fluid Mechanics and Acoustics Physiology
Research subject
Art, Technology and Design
Identifiers
URN: urn:nbn:se:kth:diva-176910ISBN: 978-951-39-5250-1 (print)OAI: oai:DiVA.org:kth-176910DiVA: diva2:868946
Conference
3rd International Conference on Music & Emotion (ICME3), Jyväskylä, Finland, 11th - 15th June 2013
Note

QC 20151112

Available from: 2015-11-12 Created: 2015-11-12 Last updated: 2015-11-18Bibliographically approved
In thesis
1. Sound perception and design in multimodal environments
Open this publication in new window or tab >>Sound perception and design in multimodal environments
2015 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

This dissertation is about sound in context. Since sensory processing is inherently multimodal, research in sound is necessarily multidisciplinary. The present work has been guided by principles of systematicity, ecological validity, complementarity of  methods, and integration of science and art. The main tools to investigate the mediating relationship of people and environment through sound have been empiricism and psychophysics. Four of the seven included papers focus on perception. In paper A, urban soundscapes were reproduced in a 3D installation. Analysis of results from an experiment revealed correlations between acoustic features and physiological indicators of stress and relaxation. Paper B evaluated soundscapes of different type. Perceived quality was predicted not only by psychoacoustic descriptors but also personality traits. Sound reproduction quality was manipulated in paper D, causing two effects on source localisation which were explained by spatial and semantic crossmodal correspondences. Crossmodal correspondence was central in paper C, a study of colour association with music. A response interface employing CIE Lab colour space, a novelty in music emotion research, was developed. A mixed method approach supported an emotion mediation hypothesis, evidenced in regression models and participant interviews. Three papers focus on design. Field surveys and acoustic measurements were carried out in restaurants. Paper E charted relations between acoustic, physical, and perceptual features, focussing on designable elements and materials. This investigation was pursued in Paper F where a taxonomy of sound sources was developed. Analysis of questionnaire data revealed perceptual and crossmodal effects. Lastly, paper G discussed how crossmodal correspondences facilitated creation of meaning in music by infusing ecologically founded sonification parameters with visual and spatial metaphors. The seven papers constitute an investigation into how sound affects us, and what sound means to us.

Abstract [sv]

Denna doktorsavhandling handlar om ljud i sammanhang. Eftersom informationsbehandling genom sinnena alltid är multimodal så kräver ljudforskning en tvärvetenskaplig forskningsansats. Arbetet i denna avhandling har vägletts av principer såsom systematik, ekologisk validitet, samspel mellan metoder, och integration av vetenskap och konst. De viktigaste redskapen för att undersöka den ömsesidiga påverkan mellan människa och miljö genom ljud har varit empiri och psykofysik.Fyra artiklar handlar om perception. I artikel A återskapades urbana ljudlandskap i en 3D-ljudinstallation. Analys av experimentresultat avslöjade samband mellan akustiska mått och fysiologiska markörer av stress och avslappning.  Artikel B utvärderade olika typer av ljudlandskap. Upplevd kvalitet kunde prediceras inte bara av psykoakustiska mått utan även av personlighetsdrag. Ljudåtergivningskvalitet manipulerades i artikel D och orsakade två effekter på lokalisering av en ljudkälla vilka förklarades av rumslig och semantisk korsmodala kopplingar. Korsmodalitet var huvudpunkten i artikel C, en studie av färgassociation till musik. Ett användargränssnitt utvecklades som använder färgrymden CIE Lab, en nyhet i forskningfältet musik och känslor. En abduktiv metod stödde hypotesen att känslouttryck medierar korsmodala kopplingar, vilket framgick av regressionsmodeller och intervjuer med försökspersonerna.Tre artiklar handlar om design. Fältundersökningar och ljudmätningar utfördes i restauranger. Artikel E kartlade samband mellan akustiska, fysiska och perceptuella särdrag, med fokus på formbara element och material. Detta arbete fortsattes i artikel F varigenom en taxonomi av ljudkällor utvecklades. Analys av enkätdata avslöjade perceptuella och korsmodala effekter. Slutligen, artikel G diskuterade hur korsmodala kopplingar främjade meningsskapande i musik genom att ekologiskt motiverade sonifikationsparametrar samverkade med visuella och spatiala uttryck. De sju artiklarna utgör landmärken i avhandlingens utforskande av hur ljud påverkar oss, och vad ljud betyder för oss.

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2015. 67 p.
Series
TRITA-CSC-A, ISSN 1653-5723 ; 2015:17
Keyword
sound, perception, design, multimodal, environment, soundscape, music, listening, crossmodal, psychoacoustics, psychophysiology, personality trait, emotion, appraisal, aesthetics, colour, correlation, regression, classification, sonification
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering Interaction Technologies Music Other Physics Topics Applied Psychology
Research subject
Speech and Music Communication
Identifiers
urn:nbn:se:kth:diva-177271 (URN)978-91-7595-771-5 (ISBN)
Public defence
2015-12-11, Kollegiesalen, Brinellvägen 8, KTH, Stockholm, 10:00 (English)
Opponent
Supervisors
Note

QC 20151118

Available from: 2015-11-18 Created: 2015-11-17 Last updated: 2015-11-19Bibliographically approved

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