Summary
Introduction
In clinical practice, sustained phonation is mostly used for acoustic voice measurements,
while perceptual evaluation is based on connected speech. Since sustained phonation
could be associated with the use of the singing voice, and since vocal registers are
more relevant for singing rather than speech, it is unclear if vocal registers contribute
to observable vocal fold contact differences between sustained phonation and speech.
Material and Methods
Sustained phonation (vowel [a] on comfortable pitch and loudness) and connected speech
(German text: Der Nordwind und die Sonne) were analyzed for 1216 subjects (426 with
and 790 without dysphonia) using the Laryngograph system (combining electroglottography
and audio recordings). From these samples, fundamental frequency (ƒo), contact quotient (CQ), sound pressure level (SPL) and frequency perturbation (jitter
first for sustained and cFx for connected speech) were evaluated.
Results
Compared to connected speech, the values of ƒo and SPL were higher for sustained phonation. For female voices, ƒo difference was greater than for male voices. At the same time, and only for the females,
CQ was lower for the sustained phonation, indicating a register difference.
Conclusion
In order to achieve a better comparability, sustained phonation should be standardized
regarding the ƒo and SPL values in correspondence to the ƒo and SPL range of reading a text. This should also reduce the risk of using a different
register for different types of phonation.
Key Words
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Article info
Publication history
Published online: March 18, 2023
Accepted:
February 15,
2023
Publication stage
In Press Corrected ProofFootnotes
Matthias Echternach`s work is supported by the Deutsche Forschungsgemeinschaft (DFG), grant no. EC 409/1-4.
Identification
Copyright
© 2023 The Voice Foundation. Published by Elsevier Inc. All rights reserved.
