Relating Estimated Cyclic Spectral Peak Frequency to Measured Epilarynx Length Using Magnetic Resonance Imaging

Elizabeth Godoy, Andrew Dumas, Jennifer Melot, Nicolas Malyska, Thomas F. Quatieri


The epilarynx plays an important role in speech production, carrying information about the individual speaker and manner of articulation. However, precise acoustic behavior of this lower vocal tract structure is difficult to establish. Focusing on acoustics observable in natural speech, recent spectral processing techniques isolate a unique resonance with characteristics of the epilarynx previously shown via simulation, specifically cyclicity (i.e. energy differences between the closed and open phases of the glottal cycle) in a 3–5kHz region observed across vowels. Using Magnetic Resonance Imaging (MRI), the present work relates this estimated cyclic peak frequency to measured epilarynx length. Assuming a simple quarter wavelength relationship, the cavity length estimated from the cyclic peak frequency is shown to be directly proportional (linear fit slope =1.1) and highly correlated (ρ = 0.85, pval<10-4) to the measured epilarynx length across speakers. Results are discussed, as are implications in speech science and application domains.


DOI: 10.21437/Interspeech.2016-1362

Cite as

Godoy, E., Dumas, A., Melot, J., Malyska, N., Quatieri, T.F. (2016) Relating Estimated Cyclic Spectral Peak Frequency to Measured Epilarynx Length Using Magnetic Resonance Imaging. Proc. Interspeech 2016, 948-952.

Bibtex
@inproceedings{Godoy+2016,
author={Elizabeth Godoy and Andrew Dumas and Jennifer Melot and Nicolas Malyska and Thomas F. Quatieri},
title={Relating Estimated Cyclic Spectral Peak Frequency to Measured Epilarynx Length Using Magnetic Resonance Imaging},
year=2016,
booktitle={Interspeech 2016},
doi={10.21437/Interspeech.2016-1362},
url={http://dx.doi.org/10.21437/Interspeech.2016-1362},
pages={948--952}
}