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Article: Classrooms for children with developmental disabilities: Sound-field and public address amplification systems compared

TitleClassrooms for children with developmental disabilities: Sound-field and public address amplification systems compared
Authors
KeywordsClassroom acoustics
Developmental delay
Listening
Sound-field amplification
Speech perception
Issue Date2006
PublisherRoutledge. The Journal's web site is located at http://www.tandf.co.uk/journals/titles/1034912x.asp
Citation
International Journal Of Disability, Development And Education, 2006, v. 53 n. 3, p. 287-299 How to Cite?
AbstractBackground noise poses adverse effects on speech sounds and affects student learning, especially for children with developmental disabilities. Sound-field and public address amplification systems can help to solve this problem by amplifying speech sounds relative to background noise. This study surveyed school classrooms for children with special needs, and compared the performance of a sound-field and a portable public address system in classroom environments. Unoccupied room noise levels and reverberation times were measured in eight classrooms at four Hong Kong schools for children with special needs. Speech levels in each classroom were measured under three conditions: without amplification, with public address system amplification, and with sound-field amplification. Speech-to-noise ratios were calculated for each condition. Noise and unamplified speech-to-noise ratio values exceeded recommended acoustic standards in all classrooms. When sound-field and public address amplification systems were installed, speech-to-noise ratios improved considerably. When either amplification system was used, a uniform sound-field resulted. The applicability of both types of amplification system and their relative merits in special education classrooms are discussed. © 2006 Taylor & Francis.
Persistent Identifierhttp://hdl.handle.net/10722/85198
ISSN
2015 Impact Factor: 0.735
2015 SCImago Journal Rankings: 0.317
References

 

DC FieldValueLanguage
dc.contributor.authorLeung, SWHen_HK
dc.contributor.authorMcPherson, Ben_HK
dc.date.accessioned2010-09-06T09:01:57Z-
dc.date.available2010-09-06T09:01:57Z-
dc.date.issued2006en_HK
dc.identifier.citationInternational Journal Of Disability, Development And Education, 2006, v. 53 n. 3, p. 287-299en_HK
dc.identifier.issn1034-912Xen_HK
dc.identifier.urihttp://hdl.handle.net/10722/85198-
dc.description.abstractBackground noise poses adverse effects on speech sounds and affects student learning, especially for children with developmental disabilities. Sound-field and public address amplification systems can help to solve this problem by amplifying speech sounds relative to background noise. This study surveyed school classrooms for children with special needs, and compared the performance of a sound-field and a portable public address system in classroom environments. Unoccupied room noise levels and reverberation times were measured in eight classrooms at four Hong Kong schools for children with special needs. Speech levels in each classroom were measured under three conditions: without amplification, with public address system amplification, and with sound-field amplification. Speech-to-noise ratios were calculated for each condition. Noise and unamplified speech-to-noise ratio values exceeded recommended acoustic standards in all classrooms. When sound-field and public address amplification systems were installed, speech-to-noise ratios improved considerably. When either amplification system was used, a uniform sound-field resulted. The applicability of both types of amplification system and their relative merits in special education classrooms are discussed. © 2006 Taylor & Francis.en_HK
dc.languageengen_HK
dc.publisherRoutledge. The Journal's web site is located at http://www.tandf.co.uk/journals/titles/1034912x.aspen_HK
dc.relation.ispartofInternational Journal of Disability, Development and Educationen_HK
dc.subjectClassroom acousticsen_HK
dc.subjectDevelopmental delayen_HK
dc.subjectListeningen_HK
dc.subjectSound-field amplificationen_HK
dc.subjectSpeech perceptionen_HK
dc.titleClassrooms for children with developmental disabilities: Sound-field and public address amplification systems compareden_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1034-912X&volume=53&issue=3&spage=287&epage=299&date=2006&atitle=Classrooms+for+Children+with+Developmental+Disabilities:+Sound-field+and+Public+Address+Amplification+Systems+Compareden_HK
dc.identifier.emailMcPherson, B: dbmcpher@hkucc.hku.hken_HK
dc.identifier.authorityMcPherson, B=rp00937en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1080/10349120600847508en_HK
dc.identifier.scopuseid_2-s2.0-33747154112en_HK
dc.identifier.hkuros128137en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33747154112&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume53en_HK
dc.identifier.issue3en_HK
dc.identifier.spage287en_HK
dc.identifier.epage299en_HK
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridLeung, SWH=14066175000en_HK
dc.identifier.scopusauthoridMcPherson, B=7006800770en_HK

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