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Child Voice and Noise: A Pilot Study of Noise in Day Cares and the Effects on 10 Children's Voice Quality According to Perceptual Evaluation
Linköping University.
KTH, School of Technology and Health (STH).ORCID iD: 0000-0003-4129-9793
KTH, School of Technology and Health (STH), Health Systems Engineering, Ergonomics. (Ergonomics of Sound)ORCID iD: 0000-0002-4804-6310
KTH, School of Computer Science and Communication (CSC), Speech, Music and Hearing, TMH, Music Acoustics.
2009 (English)In: Journal of Voice, ISSN 0892-1997, E-ISSN 1557-8658, Vol. 23, no 5, 587-593 p.Article in journal (Refereed) Published
Abstract [en]

The purpose of this investigation was to study children's exposure to background noise at the ears during a normal day at the day care center and also to relate this to a perceptual evaluation of voice quality. Ten children, from three day care centers, with no history of hearing and speech problems or frequent infections were selected as subjects. A binaural recording technique was used with two microphones placed on both sides of the subject's head, at equal distance from the mouth. A portable digital audio tape (DAT) recorder (Sony TCD-D 100, Stockholm, Sweden) was attached to the subject's waist. Three recordings were made for each child during the day. Each recording was calibrated and started with three repetitions of three sentences containing only sonorants. The recording technique allowed separate analyses of the background noise level and of the sound pressure level (SPL) of each subjects' own voice. Results showed a mean background noise level for the three day care centers at 82.6 dBA Leq, ranging from 81.5 to 83.6 dBA Leq. Day care center no. 2 had the highest mean value and also the highest value at any separate recording session with a mean background noise level of 85.4 dBA Leq during the noontime recordings. Perceptual evaluation showed that the children attending this day care center also received higher values on the following voice characteristics: hoarseness, breathiness, and hyperfunction. Girls increased their loudness level during the day, whereas for boys no such change could be observed.

Place, publisher, year, edition, pages
2009. Vol. 23, no 5, 587-593 p.
Keyword [en]
Child voice, Background noise, Perceptual evaluation, Aura, Vocal, loudness, dysphonic patients, phonation, teachers, features
National Category
Otorhinolaryngology Fluid Mechanics and Acoustics
Identifiers
URN: urn:nbn:se:kth:diva-18750DOI: 10.1016/j.jvoice.2007.10.017ISI: 000269735200011Scopus ID: 2-s2.0-69249217980OAI: oai:DiVA.org:kth-18750DiVA: diva2:336797
Note

QC 20150626

Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2015-06-26Bibliographically approved

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Granqvist, SvanteWhite Sjölander, Peta

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