Effects of background noise on autonomic arousal (skin conductance level)

Author:

Alvar Ann1,Francis Alexander L.1ORCID

Affiliation:

1. Department of Speech, Language, and Hearing Sciences, Purdue University , West Lafayette, Indiana 47906, USA aalvar@purdue.edu , francisa@purdue.edu

Abstract

This study was designed to investigate the relationship between sound level and autonomic arousal using acoustic signals similar in level and acoustic properties to common sounds in the built environment. Thirty-three young adults were exposed to background sound modeled on ventilation equipment noise presented at levels ranging from 35 to 75 dBA sound pressure level (SPL) in 2 min blocks while they sat and read quietly. Autonomic arousal was measured in terms of skin conductance level. Results suggest that there is a direct relationship between sound level and arousal, even at these realistic levels. However, the effect of habituation appears to be more important overall.

Publisher

Acoustical Society of America (ASA)

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