Variability of speech rate and articulatory transition ability

Peres, Larissa Maria; Juste, Fabiola; Costa, Julia Biancalana; Sassi, Fernanda Chiarion; Ritto, Ana Paula; Andrade, Claudia Regina Furquim de

doi:10.1590/2317-6431-2023-2883en

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Audiology - Communication Research

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Original Article • Audiol., Commun. Res. 29 • 2024 • https://doi.org/10.1590/2317-6431-2023-2883en copy

Variability of speech rate and articulatory transition ability

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

Purpose

To analyze speech rate by applying two different methods: speech rate analysis considering the ratio of time/ fluent stretches of the sample and considering the ratio of time/200 fluent syllables

Methods

The speech samples from 73 participants of both genders, Brazilian Portuguese speakers, were analyzed. The analysis was carried out based on the parameters of Fluency Profile Assessment Protocol and compared regarding: speech rate (syllables per minute) and total time of the speech sample (in both reference and proposed methodology).

Results

The significant positive correlations found in the three analyses indicate that the variables concerning the measurement of speech rate by the two methods of analysis are related and move together.

Conclusion

Although the proposed methodology has proven to be effective, it proved unfavorable in comparison because it reflects proportionally the same results as the traditional methodology, but demands more time and manual resources.

Keywords:
Speech, language and hearing sciences; Speech disorders; Speech production measurement; Speech acoustics; Reference standards

		Mean (±SD)	CI 95%
Research Group (n=40)
MA	Rate of syllables per minute	146.4 (±56.8)	128.2 – 164.6
MA	Total segment duration	93.4 (±34.2)	82.5 – 104.4
MW	Rate of syllables per minute	250.9 (±51.2)	234.5 – 267.3
MW	Total segment duration	49.4 (±9.9)	46.2 – 52.5
Control Group (n=33)
MA	Rate of syllables per minute	236.7 (±45.9)	220.4 – 253.0
MA	Total segment duration	52.5 (±10.0)	49.0 – 56.1
MW	Rate of syllables per minute	278.3 (±47.7)	261.4 – 295.2
MW	Total segment duration	44.3 (±7.0)	41.8 – 46.7

		Correlation between measurements: MA and MW
		Spearman correlation coefficient – ρ	p-value
Rate of syllables per minute	Research Group (n=40)	0.651	<0.001 ^* * = significance
Rate of syllables per minute	Control Group (n=33)	0.623	<0.001*
Total segment duration	Research Group (n=40)	0.881	<0.001*
Total segment duration	Control Group (n=33)	0.882	<0.001*

Speech rate measurement criterion	Severity of stuttering (SSI-3)	Correlation between measurements: MA and MW
Speech rate measurement criterion	Severity of stuttering (SSI-3)	Spearman correlation coefficient – ρ	p-value
Rate of syllables per minute	Mild (n=11)	0.709	0.015*
	Moderate (n=15)	0.366	0.199
	Severe (n=8)	0.095	0.823
	Very Severe (n=6)	0.886	0.019*
Total segment duration	Mild (n=11)	0.709	0.015*
	Moderate (n=15)	0.366	0.199
	Severe (n=8)	0.095	0.823
	Very Severe (n=6)	0.829	0.042 ^* * = significance

Speech rate measurement criterion	Speech rate classification	Correlation between measurements: MA and MW
Speech rate measurement criterion	Speech rate classification	Spearman correlation coefficient – ρ	p-value
Rate of syllables per minute	Normal (n=26)	0.104	0.613
	Decreased (n=29)	0.277	0.146
	Increased (n=18)	0.708	0.001*
Total segment duration	Normal (n=26)	0.111	0.588
	Decreased (n=29)	0.221	0.248
	Increased (n=18)	0.708	0.001 ^* * = significance

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E-mail: revista@audiologiabrasil.org.br

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[1] Conflict of interests: No.