References
- Winkler R, Sendlmeier W. EGG open quotient in aging voices—changes with increasing chronological age and its perception. Logoped Phoniatr Vocol. 2006;31;51–6.
- Bier SD, Watson CI, McCann CM. Using the perturbation of the contact quotient of the EGG waveform to analyze age differences in adult speech. J Voice. 2014;28:267–73.
- Orlikoff RF. Assessment of the dynamics of vocal fold contact from the electroglottogram: data from normal male subjects. J Speech Lang Hear Res. 1991;34:1066–72.
- Schoentgen J, De Guchteneere R. Time series analysis of jitter. Journal of Phonetics. 1995;23:189–201.
- Mooshammer C. Acoustic and laryngographic measures of the laryngeal reflexes of linguistic prominence and vocal effort in German. J Acoust Soc Am. 2010;127:1047–58.
- Schötz S. Acoustic analysis of adult speaker age. In: Speaker classification I. Berlin: Springer; 2007:88–107.
- Harnsberger JD, Shrivastav R, Brown WS, Rothman H, Hollien H. Speaking rate and fundamental frequency as speech cues to perceived age. J Voice. 2008;22:58–69.
- Torre P, Barlow JA. Age-related changes in acoustic characteristics of adult speech. J Commun Disord. 2009;42:324–33.
- Ma EPM, Love AL. Electroglottographic evaluation of age and gender effects during sustained phonation and connected speech. J Voice. 2010;24:146–52.
- Awan SN. The aging female voice: acoustic and respiratory data. Clin Linguist Phon. 2006;20:171–80.
- Ferrand CT. Harmonics-to-noise ratio: an index of vocal aging. J Voice. 2002;16:480–7.
- Goy H, Fernandes DN, Pichora-Fuller MK, van Lieshout P. Normative voice data for younger and older adults. J Voice. 2013;27:545–55.
- Reubold U, Harrington J, Kleber F. Vocal aging effects on F0 and the first formant: a longitudinal analysis in adult speakers. Speech Communication. 2010;52:638–51.
- Baken RJ. The aged voice: a new hypothesis. J Voice. 2005;19:317–25.
- Higgins MB, Saxman JH. A comparison of selected phonatorybehaviors of healthy aged and young adults. J Speech Hear Res. 1991;34:1000–10.
- Dehqan A, Scherer RC, Dashti G, Ansari-Moghaddam A, Fanaie S. The effects of aging on acoustic parameters of voice. Folia Phoniatr Logop. 2013;64:265–70.
- Childers DG, Hicks DM, Moore GP, Eskenazi L, Lalwani AL. Electroglottography and vocal fold physiology. J Speech Lang Hear Res. 1990;33:245–54.
- Orlikoff RF. Vocal stability and vocal tract configuration: an acoustic and electroglottographic investigation. J Voice. 1995;9:173–81.
- Fairbanks G, editor. Voice and articulation: drillbook. Harper & Brothers; 1940.
- Holmberg EB, Hillman RE, Perkell JS. Glottal airflow and transglottal air pressure measurements for male and female speakers in low, normal, and high pitch. J Voice. 1989;3:294–305.
- Lamei LF. Formalizing knowledge used in spectrogram reading: acoustic and perceptual evidence from stops (No. RLE-TR-537). Massachusetts Inst of Tech Cambridge Research Lab of Electronics; 1988.
- R Core Team. R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria; 2013. Available at: http://www.R-project.org/(accessed 22 August 2014).
- O’Shaughnessy D, Allen J. Linguistic modality effects on fundamental frequency in speech. J Acoust Soc Am. 1983;74:1155–71.
- Maeda S. Compensatory articulation during speech: evidence from the analysis and synthesis of vocal-tract shapes using an articulatory model. In: Speech production and speech modelling. Netherlands: Springer; 1990. p. 131–49.
- Black JW. Natural frequency, duration, and intensity of vowels in reading. Journal of Speech and Hearing Disorders. 1949;14:216–21.
- Ewan WG. Explaining the intrinsic pitch of vowels. J Acoust Soc Am. 1975;58:S40.
- Shadle CH, Pierrehumbert JB, Liberman MY. The intrinsic fundamental frequency of vowels in sentence context. J Acoust Soc Am. 1985;78:1562–7.
- Watson CI, Harrington J. Acoustic evidence for dynamic formant trajectories in Australian English vowels. J Acoust Soc Am. 1999;106:458–68.
- Teutenberg J, Watson C, Riddle P. Modelling and synthesising F0 contours with the discrete cosine transform. In: Acoustics, Speech and Signal Processing, 2008. ICASSP 2008. IEEE International Conference, March 2008. IEEE. p. 3973–6.
- Bier SD, Watson CI. Signal processing techniques for language identification based on the pitch contour. In: The Proceedings of the 18th Electronics New Zealand Conference. 2011. p. 33–8.
- Schiel F. Automatic phonetic transcription of non-prompted speech. Proceedings of the ICPhS. San Francisco, August 1999. p. 607–10.