Summary
Objective
There is no normative voice dataset regarding the vocal capacity of Japanese speakers
in the English literature. We collected age- and sex-stratified data on the vocal
capacity of vocally healthy Japanese speakers.
Methods
In total, 111 vocally healthy Japanese speakers (42 men and 69 women) were divided
into the young (13 men and 30 women), middle-aged (18 men and 27 women), and elderly
(11 men and 12 women) groups. Participants underwent duration-, intensity-, and pitch-related
vocal capacity tests using either a conventional method or an aerodynamic method or
both. The data obtained were statistically analyzed in terms of age and sex.
Results
Overall, the duration- and pitch-related parameters measured by the conventional method
were generally comparable to the previous results in the literature, while duration-,
pitch-, and intensity-related parameters measured by the aerodynamic method differed
significantly from them. Significant sex differences were noted in all parameters
in the duration-, intensity-, and pitch-related vocal capacity tests. Furthermore,
significant age-related changes were observed in all parameters, except for the mean
flow rate and highest pitch measured by the aerodynamic method.
Conclusion
This study is the first to provide a sex- and age-stratified database of the normative
vocal capacity data of Japanese speakers. However, further improvements will be needed
in the assessment protocols, conditions, or devices used for the duration-, intensity-,
and pitch-related vocal capacity tests in the aerodynamic method.
Key Words
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Article info
Publication history
Published online: May 02, 2022
Accepted:
March 30,
2022
Publication stage
In Press Corrected ProofFootnotes
Funding: The authors declare no conflict of interest and this research received no external funding.
Identification
Copyright
© 2022 The Voice Foundation. Published by Elsevier Inc. All rights reserved.
