Evaluation of Analytical Modeling Functions for the Phonation Onset Process

Petermann, Simon; Kniesburges, Stefan; Ziethe, Anke; Schützenberger, Anne; Döllinger, Michael

doi:10.1155/2016/8469139

Cited by 10 publications

(15 citation statements)

References 17 publications

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“…Various tasks have been used to elicit the oscillatory onset time. These include successive /e.e.e/, 5,6 /mama/, 22 and /he.he.he/. 8,14 Similarly, oscillatory offset is broadly characterized by (1) brief duration of non-steady state oscillatory motion, followed by (2) complete cessation of oscillatory motion and vocal fold abduction (75ms or 17±2.5 cycles).…”

Section: Introductionmentioning

confidence: 99%

Oscillatory Onset and Offset in Young Vocally Healthy Adults Across Various Measurement Methods

2017

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Objective To investigate the relationship between (a) oscillatory onset/offset time across various approaches that use different measurement criteria and (b) oscillatory onset and offset times in vocally healthy young adults. Method Oscillatory onset/offset times were obtained from 71 vocally normal adults with high-speed videoendoscopy. Comparisons between the different onset methods involved measurement of the oscillatory onset time (OOT), voice initiation period (VIP), and the phonation onset method (POT) and for offset methods involved computation of the Oscillatory Offset Time (OOToff) method and the phonation offset time (POToff). Results Correlation of the OOT with the VIP was 0.240 (p = .04) & with the POT form glottal area waveform (GAW) was 0.248 (p =.04); however correlation between the VIP and POT GAW was 0.661 (p < .001). For offset there was a moderate correlation (rS = 0.503, p < 0.001) across OOToff and VOPoff. The onset time was longest for the OOT followed by the VIP and the POT. There was no correlation between onset and offset for all methods. Conclusions A framework for quantification of oscillatory onset/offset time was developed for /hi/ tasks, which can be used for future measurements of disordered voice. A positive relationship was observed between VIP & POT and between OOToff and VOPoff. There was a nonlinear relationship between the OOT and the VIP, POT measures. Onset/offset times are strongly influenced by the calculation method used, the pros and cons of which are discussed in this paper. Vibratory onset and offset represent physiologically different phenomena.

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Section: Introductionmentioning

confidence: 99%

Oscillatory Onset and Offset in Young Vocally Healthy Adults Across Various Measurement Methods

2017

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“…In contrast, glottal area waveforms (GAW) computed from HSV data (Petermann et al, 2016;Patel et al, 2017a,b) represent the whole two-dimensional projection of the orifice between the vocal folds but without any information about the location of the glottal gap in the anterior-posterior direction. A third option for investigating phonation onsets using HSV data utilizes several kymograms to estimate the vibrating length of the vocal folds (Ikuma et al, 2016).…”

Section: Accepted Manuscript 1 Introductionmentioning

confidence: 99%

“…While envelope functions can be fitted directly to vocal fold displacement or GAW peaks (Mergell et al, 1998;Petermann et al, 2016), amplitude envelopes, computed via Hilbert transform, have been used as an intermediate step in Braunschweig et al (2008) and Patel et al (2017b). These amplitude envelopes are called Hilbert envelopes (HEs).…”

Section: Accepted Manuscript 1 Introductionmentioning

confidence: 99%

Analysis of phonation onsets in vowel production, using information from glottal area and flow estimate

Murtola

Malinen

Geneid

et al. 2019

Speech Communication

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A multichannel dataset comprising high-speed videoendoscopy images, and electroglottography and free-field microphone signals, was used to investigate phonation onsets in vowel production. Use of the multichannel data enabled simultaneous analysis of the two main aspects of phonation, glottal area, extracted from the high-speed videoendoscopy images, and glottal flow, estimated from the microphone signal using glottal inverse filtering. Pulse-wise parameterization of the glottal area and glottal flow indicate that there is no single dominant way to initiate quasi-stable phonation. The trajectories of fundamental frequency and normalized amplitude quotient, extracted from glottal area and estimated flow, may differ markedly during onsets. The location and steepness of the amplitude envelopes of the two signals were observed to be closely related, and quantitative analysis supported the hypothesis that glottal area and flow do not carry essentially different amplitude information during vowel onsets. Linear models were used to predict the phonation onset times from the characteristics of the subsequent steady phonation. The phonation onset time of glottal area was found to have good predictability from a combination of the fundamental frequency and the normalized amplitude quotient of the glottal flow, as well as the gender of the speaker. For the phonation onset time of glottal flow, the best linear model was obtained using the fundamental frequency and the normalized amplitude quotient of the glottal flow as predictors.

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“…Typical vocal fold vibrations display a frequency in the range of 80-300 Hz for normal phonation. In order to capture such rapid movements adequately, high-speed videoendoscopy (HSV) with frame rates in the range of 4-20 kHz is used [3][4][5][6][7]. In the clinical routine, the most common methods for an evaluation of the vocal fold physiology and dynamical behavior are based on endoscopic, two-dimensional imaging (see Figure 1, left).…”

Section: Introductionmentioning

confidence: 99%

Endoscopic Laser-Based 3D Imaging for Functional Voice Diagnostics

et al. 2017

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Recently, we reported on the in vivo application of a miniaturized measuring device for 3D visualization of the superior vocal fold vibrations from high-speed recordings in combination with a laser projection unit (LPU). As a long-term vision for this proof of principle, we strive to integrate the further developed laserendoscopy as a diagnostic method in daily clinical routine. The new LPU mainly comprises a Nd:YAG laser source (532 nm/CW/2ω) and a diffractive optical element (DOE) generating a regular laser grid (31 × 31 laser points) that is projected on the vocal folds. By means of stereo triangulation, the 3D coordinates of the laser points are reconstructed from the endoscopic high-speed footage. The new design of the laserendoscope constitutes a compromise between robust image processing and laser safety regulations. The algorithms for calibration and analysis are now optimized with respect to their overall duration and the number of required interactions, which is objectively assessed using binary classifiers. The sensitivity and specificity of the calibration procedure are increased by 40.1% and 22.3%, which is statistically significant. The overall duration for the laser point detection is reduced by 41.9%. The suggested semi-automatic reconstruction software represents an important stepping-stone towards potential real time processing and a comprehensive, objective diagnostic tool of evidence-based medicine.

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Evaluation of Analytical Modeling Functions for the Phonation Onset Process

Cited by 10 publications

References 17 publications

Oscillatory Onset and Offset in Young Vocally Healthy Adults Across Various Measurement Methods

Oscillatory Onset and Offset in Young Vocally Healthy Adults Across Various Measurement Methods

Analysis of phonation onsets in vowel production, using information from glottal area and flow estimate

Endoscopic Laser-Based 3D Imaging for Functional Voice Diagnostics

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