Detection of glottal closure instant and glottal open region from speech signals using spectral flatness measure

dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorKadiri, Sudarsana
dc.contributor.authorPrasad, Ravi Shankar
dc.contributor.authorYegnanarayana, Bayya
dc.contributor.departmentSpeech Communication Technology
dc.contributor.departmentIDIAP Research Institute
dc.contributor.departmentInternational Institute of Information Technology Hyderabad
dc.date.accessioned2020-01-02T14:04:28Z
dc.date.available2020-01-02T14:04:28Z
dc.date.embargoinfo:eu-repo/date/embargoEnd/2021-11-19
dc.date.issued2020-01
dc.description.abstractThis paper proposes an approach using spectral flatness measure to detect the glottal closure instant (GCI) and the glottal open region (GOR) within each glottal cycle in voiced speech. The spectral flatness measure is derived from the instantaneous spectra obtained in the analysis of speech using single frequency filtering (SFF) and zero time windowing (ZTW) methods. The Hilbert envelope of the numerator of group delay (HNGD) spectrum at each instant of time is obtained using the ZTW method. The HNGD spectrum highlights the important (like resonances) spectral characteristics of the vocal tract system at each instant of time. The dynamic characteristics of the vocal tract system can be tracked by the spectral flatness feature of the HNGD spectrum, thus bringing out the characteristics of the vocal tract system when the subglottal region is coupled with the supraglottal region during the open phase of the glottal cycle. The SFF spectra at each instant change significantly at the location of the GCI. The GCIs can be detected using the changes in the spectral flatness information derived from the SFF spectra. The proposed methods of detection of GCI and GOR is compared with several existing methods.en
dc.description.versionPeer revieweden
dc.format.extent30-43
dc.format.mimetypeapplication/pdf
dc.identifier.citationKadiri , S , Prasad , R S & Yegnanarayana , B 2020 , ' Detection of glottal closure instant and glottal open region from speech signals using spectral flatness measure ' , Speech Communication , vol. 116 , pp. 30-43 . https://doi.org/10.1016/j.specom.2019.11.004en
dc.identifier.doi10.1016/j.specom.2019.11.004
dc.identifier.issn0167-6393
dc.identifier.issn1872-7182
dc.identifier.otherPURE UUID: 943240f6-4377-4751-99b7-0927f12be1d6
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/943240f6-4377-4751-99b7-0927f12be1d6
dc.identifier.otherPURE LINK: http://www.scopus.com/inward/record.url?scp=85075525863&partnerID=8YFLogxK
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/38673669/ELEC_Kadiri_GCI_GOR_Spectral_Flatness_SPEECH_COMMUNICATION.pdf
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/42134
dc.identifier.urnURN:NBN:fi:aalto-202001021245
dc.language.isoenen
dc.publisherElsevier
dc.relation.ispartofseriesSpeech Communicationen
dc.relation.ispartofseriesVolume 116en
dc.rightsopenAccessen
dc.subject.keywordExcitation source
dc.subject.keywordGlottal Closure Instants
dc.subject.keywordGlottal open region
dc.subject.keywordSingle frequency filtering
dc.subject.keywordSpeech analysis
dc.subject.keywordZero time windowing
dc.titleDetection of glottal closure instant and glottal open region from speech signals using spectral flatness measureen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
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