Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Effect on LTAS of vocal loudness variation
KTH, Superseded Departments, Speech, Music and Hearing.
KTH, Superseded Departments, Speech, Music and Hearing.
2004 (English)In: Logopedics, Phoniatrics, Vocology, ISSN 1401-5439, E-ISSN 1651-2022, Vol. 29, no 4, 183-191 p.Article in journal (Refereed) Published
Abstract [en]

Long-term-average spectrum (LTAS) is an efficient method for voice analysis, revealing both voice source and formant characteristics. However, the LTAS contour is non-uniformly affected by vocal loudness. This variation was analyzed in 15 male and 16 female untrained voices reading a text 7 times at different degrees of vocal loudness, mean change in overall equivalent sound level (Leq) amounting to 27.9 dB and 28.4 dB for the female and male subjects. For all frequency values up to 4 kHz, spectrum level was strongly and linearly correlated with Leq for each subject. The gain factor, that is to say, the rate of level increase, varied with frequency, from about 0.5 at low frequencies to about 1.5 in the frequency range 1.5-3 kHz. Using the gain factors for a subject, LTAS contours could be predicted at any Leq within the measured range, with an average accuracy of 2-3 dB below 4 kHz. Mean LTAS calculated for an Leq of 70 dB for each subject showed considerable individual variation for both males and females, SD of the level varying between 7 dB and 4 dB depending on frequency. On the other hand, the results also suggest that meaningful comparisons of LTAS, recorded for example before and after voice therapy, can be made, provided that the documentation includes a set of recordings at different loudness levels from one recording session.

Place, publisher, year, edition, pages
2004. Vol. 29, no 4, 183-191 p.
Keyword [en]
Long-term-average spectrum, Spectrum slope, Vocal loudness, Voice source
National Category
Computer Sciences Language Technology (Computational Linguistics)
Identifiers
URN: urn:nbn:se:kth:diva-51804DOI: 10.1080/14015430410004689PubMedID: 15764212Scopus ID: 2-s2.0-10644289394OAI: oai:DiVA.org:kth-51804DiVA: diva2:465099
Note
tmh_import_11_12_14 QC 20111216Available from: 2011-12-14 Created: 2011-12-14 Last updated: 2018-01-12Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textPubMedScopus

Search in DiVA

By author/editor
Nord, SusanneSundberg, Johan
By organisation
Speech, Music and Hearing
In the same journal
Logopedics, Phoniatrics, Vocology
Computer SciencesLanguage Technology (Computational Linguistics)

Search outside of DiVA

GoogleGoogle Scholar

doi
pubmed
urn-nbn

Altmetric score

doi
pubmed
urn-nbn
Total: 36 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf