What question did this study set out to answer?

This research aims to introduce the normalized amplitude quotient (NAQ) as a reliable method to parameterize the glottal closing phase in voice analysis.

July 31, 2002The Journal of the Acoustical Society of America

Normalized amplitude quotient for parametrization of the glottal flow

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Authors

PAPaavo AlkuAalto University TBTom BäckströmAalto University EVErkki VilkmanUniversity of Helsinki

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Implication

Randomized trial presents NAQ as a robust method for analyzing glottal flow in voice phonation, indicating improved measurement accuracy.

Key Points

This research aims to introduce the normalized amplitude quotient (NAQ) as a reliable method to parameterize the glottal closing phase in voice analysis.
Utilized inverse filtering to estimate glottal flow waveforms.
Calculated the ratio of ac flow amplitude to the negative peak amplitude of the flow derivative via equivalent rectangular pulse concept.
Compared NAQ with conventional time-domain parameters for robustness against measurement distortion.
Demonstrated that NAQ is less affected by noise compared to the closing quotient.
NAQ effectively differentiated types of phonation in breathy, normal, and pressed vowels.
Results suggest NAQ improves measurement accuracy of glottal flow parameters.

Cite This Study

Alku et al. (2002) studied this question.

synapsesocial.com/papers/6a10e4e492dd5d7437ee355b https://doi.org/10.1121/1.1490365

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Normalized amplitude quotient for parametrization of the glottal flow

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Implication

Key Points

Cite This Study

Normalized amplitude quotient for parametrization of the glottal flow

Discussion

Member takes

Implication

Key Points

Cite This Study

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