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Article: Suitability of acoustic perturbation measures in analysing periodic and nearly periodic voice signals

TitleSuitability of acoustic perturbation measures in analysing periodic and nearly periodic voice signals
Authors
KeywordsDysphonia
Instrumental analysis
Periodicity of voice signals
Reliability
Validity
Issue Date2005
PublisherS Karger AG. The Journal's web site is located at http://www.karger.com/FPL
Citation
Folia Phoniatrica Et Logopaedica, 2005, v. 57 n. 1, p. 38-47 How to Cite?
AbstractIn recent years, acoustic perturbation measurement has gained clinical and research popularity due to the ease of availability of commercial acoustic analysing software packages in the market. However, because the measurement itself depends critically on the accuracy of frequency tracking from the voice signal, researchers argue that perturbation measures are not suitable for analysing dysphonic voice samples, which are aperiodic in nature. This study compares the fundamental frequency, relative amplitude perturbation, shimmer percent and noise-toharmonic ratio between a group of dysphonic and non-dysphonic subjects. One hundred and twelve dysphonic subjects (93 females and 19 males) and 41 non-dysphonic subjects (35 females and 6 males) participated in the study. All the 153 voice samples were categorized into type I (periodic or nearly periodic), type II (signals with subharmonic frequencies that approach the fundamental frequency) and type III (aperiodic) signals. Only the type I (periodic and nearly periodic) voice signals were acoustically analysed for perturbation measures. Results revealed that the dysphonic female group presented significantly lower fundamental frequency, significantly higher relative amplitude perturbation and shimmer percent values than the non-dysphonic female group. However, none of these three perturbation measures were able to differentiate between male dysphonic and male non-dysphonic subjects. The noise-to-harmonic ratio failed to differentiate between the dysphonic and non-dysphonic voices for both gender groups. These results question the sensitivity of acoustic perturbation measures in detecting dysphonia and suggest that contemporary acoustic perturbation measures are not suitable for analysing dysphonic voice signals, which are even nearly periodic. Copyright © 2005 S. Karger AG, Basel.
Persistent Identifierhttp://hdl.handle.net/10722/85373
ISSN
2015 Impact Factor: 0.391
2015 SCImago Journal Rankings: 0.329
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorMa, EPMen_HK
dc.contributor.authorYiu, EMLen_HK
dc.date.accessioned2010-09-06T09:03:57Z-
dc.date.available2010-09-06T09:03:57Z-
dc.date.issued2005en_HK
dc.identifier.citationFolia Phoniatrica Et Logopaedica, 2005, v. 57 n. 1, p. 38-47en_HK
dc.identifier.issn1021-7762en_HK
dc.identifier.urihttp://hdl.handle.net/10722/85373-
dc.description.abstractIn recent years, acoustic perturbation measurement has gained clinical and research popularity due to the ease of availability of commercial acoustic analysing software packages in the market. However, because the measurement itself depends critically on the accuracy of frequency tracking from the voice signal, researchers argue that perturbation measures are not suitable for analysing dysphonic voice samples, which are aperiodic in nature. This study compares the fundamental frequency, relative amplitude perturbation, shimmer percent and noise-toharmonic ratio between a group of dysphonic and non-dysphonic subjects. One hundred and twelve dysphonic subjects (93 females and 19 males) and 41 non-dysphonic subjects (35 females and 6 males) participated in the study. All the 153 voice samples were categorized into type I (periodic or nearly periodic), type II (signals with subharmonic frequencies that approach the fundamental frequency) and type III (aperiodic) signals. Only the type I (periodic and nearly periodic) voice signals were acoustically analysed for perturbation measures. Results revealed that the dysphonic female group presented significantly lower fundamental frequency, significantly higher relative amplitude perturbation and shimmer percent values than the non-dysphonic female group. However, none of these three perturbation measures were able to differentiate between male dysphonic and male non-dysphonic subjects. The noise-to-harmonic ratio failed to differentiate between the dysphonic and non-dysphonic voices for both gender groups. These results question the sensitivity of acoustic perturbation measures in detecting dysphonia and suggest that contemporary acoustic perturbation measures are not suitable for analysing dysphonic voice signals, which are even nearly periodic. Copyright © 2005 S. Karger AG, Basel.en_HK
dc.languageengen_HK
dc.publisherS Karger AG. The Journal's web site is located at http://www.karger.com/FPLen_HK
dc.relation.ispartofFolia Phoniatrica et Logopaedicaen_HK
dc.rightsFolia Phoniatrica et Logopaedica. Copyright © S Karger AG.en_HK
dc.subjectDysphoniaen_HK
dc.subjectInstrumental analysisen_HK
dc.subjectPeriodicity of voice signalsen_HK
dc.subjectReliabilityen_HK
dc.subjectValidityen_HK
dc.titleSuitability of acoustic perturbation measures in analysing periodic and nearly periodic voice signalsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1021-7762&volume=57&issue=1&spage=38&epage=47&date=2005&atitle=Suitability+of+Acoustic+Perturbation+Measures+in+Analyzing+Periodic+and+Nearly+Periodic+Voice+Signalsen_HK
dc.identifier.emailMa, EPM: estella1@hku.hken_HK
dc.identifier.emailYiu, EML: eyiu@hku.hken_HK
dc.identifier.authorityMa, EPM=rp00933en_HK
dc.identifier.authorityYiu, EML=rp00981en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1159/000081960en_HK
dc.identifier.pmid15655340-
dc.identifier.scopuseid_2-s2.0-12444256327en_HK
dc.identifier.hkuros102035en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-12444256327&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume57en_HK
dc.identifier.issue1en_HK
dc.identifier.spage38en_HK
dc.identifier.epage47en_HK
dc.identifier.isiWOS:000226412000005-
dc.publisher.placeSwitzerlanden_HK
dc.identifier.scopusauthoridMa, EPM=7202039872en_HK
dc.identifier.scopusauthoridYiu, EML=7003337895en_HK

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