The difference between first and second harmonic amplitudes correlates between glottal airflow and neck-surface accelerometer signals during phonation
Author
dc.contributor.author
Mehta, Daryush D.
Author
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Espinoza, Víctor M.
Author
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Van Stan, Jarrad H.
Author
dc.contributor.author
Zañartu, Matías
Author
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Hillman, Robert E.
Admission date
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2019-10-30T15:40:12Z
Available date
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2019-10-30T15:40:12Z
Publication date
dc.date.issued
2019
Cita de ítem
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Journal of the Acoustical Society of America, Volumen 145, Issue 5, 2019, Pages EL386-EL392
Identifier
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00014966
Identifier
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10.1121/1.5100909
Identifier
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https://repositorio.uchile.cl/handle/2250/172553
Abstract
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Miniature high-bandwidth accelerometers on the anterior neck surface are used in laboratory and ambulatory settings to obtain vocal function measures. This study compared the widely applied L1-L2 measure (historically, H1-H2) - the difference between the log-magnitude of the first and second harmonics - computed from the glottal airflow waveform with L1-L2 derived from the raw neck-surface acceleration signal in 79 vocally healthy female speakers. Results showed a significant correlation (r = 0.72) between L1-L2 values estimated from both airflow and accelerometer signals, suggesting that raw accelerometer-based estimates of L1-L2 may be interpreted as reflecting glottal physiological parameters and voice quality attributes during phonation.