Physical simulation of laryngeal disorders using a multiple-mass vocal fold model

Fraile, Rubén; Kob, Malte; Godino-Llorente, Juan Ignacio; Sáenz-Lechón, Nicolás; Osma-Ruiz, Víctor; Gutiérrez-Arriola, Juana M.

doi:10.1016/j.bspc.2011.04.002

Cited by 12 publications

(18 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The voice production simulation model described in [12] was used to simulate the production of one open vowel (/a/), one closed front vowel (/i/), and one closed back vowel (/u/). The vocal tract area functions used for simulation were the ones corresponding to individual TB in [13].…”

Section: Simulationmentioning

confidence: 99%

“…This is modelled by making the calculation of the glottal airflow volume velocity u g dependant on the magnitude of such regressive wave. This dependency has the form indicated by equation (23) in [12]: (1) In the uncoupled mode the glottal flow is made independent of the regressive pressure waves coming upstream from the vocal tract. This is achieved by making the variable p^ equal to 0.…”

Section: Simulationmentioning

confidence: 99%

“…In this set-up, the vocal tract does not interact with the larynx and the voice source only depends on the subglottal pressure p^ b and some geometrical parameters describing the configuration of the vocal folds. Equation (23) in [12] is simplified to the following form:…”

Section: Simulationmentioning

confidence: 99%

“…In this paper, an insight into this issue is provided by comparing the acoustic analyses of measured supraglottal and voice waves with results obtained from simulating these signals using the discrete multiple-mass simulator described in [12].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Analysis of Measured and Simulated Supraglottal Acoustic Waves

et al. 2016

Self Cite

View full text Add to dashboard Cite

To date, while much attention has been paid to the estimation and modelling of the voice source (i.e. the glottal airflow volume velocity), the measurement and characterisation of the supraglottal pressure wave have been much less studied. Some previous results have unveiled that the supraglottal pressure wave has some spectral resonances similar to those of the voice pressure wave. This makes the supraglottal wave partially intelligible. While the explanation for such effect seems to be clearly related to the reflected pressure wave travelling upstream along the vocal tract, the influence that non-linear source-filter interaction has on it is not as clear. This paper provides an insight into this issue by comparing the acoustic analyses of measured and simulated supraglottal and voice waves. Simulations have been performed using a high-dimensional discrete vocal-fold model. Results of such comparative analysis indicate that spectral resonances in the supraglottal wave are mainly caused by the regressive pressure wave that travels upstream along the vocal tract and not by source-tract interaction. On the contrary and according to simulation results, source-tract interaction has a role in the loss of intelligibility that happens in the supraglottal wave with respect to the voice wave. This loss of intelligibility mainly corresponds to spectral differences around the frequency of the second formant.

show abstract

Section: Simulationmentioning

confidence: 99%

Section: Simulationmentioning

confidence: 99%

Section: Simulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Analysis of Measured and Simulated Supraglottal Acoustic Waves

et al. 2016

Self Cite

View full text Add to dashboard Cite

show abstract

“…A detailed and complete description of the voice production model can be found in [28]. Here, only a brief and qualitative description is included, aimed at providing a framework for a better understanding of the tremor model.…”

Section: Voice Production Modelmentioning

confidence: 99%

Simulation of tremulous voices using a biomechanical model

Fraile

Godino-Llorente

Kob

2015

J AUDIO SPEECH MUSIC PROC.

Self Cite

View full text Add to dashboard Cite

Vocal tremor has been simulated using a high-dimensional discrete vocal fold model. Specifically, respiratory, phonatory, and articulatory tremors have been modeled as instabilities in six parameters of the model. Reported results are consistent with previous knowledge in that respiratory tremor mainly causes amplitude modulation of the voice signal while laryngeal tremor causes both amplitude and frequency modulation. In turn, articulatory tremor is commonly assumed to produce only amplitude modulations but the simulation results indicate that it also produces a high-frequency modulation of the output signal. Furthermore, articulatory tremor affects the frequency response of the vocal tract and it might thus be detected by analyzing the spectral envelope of the acoustic signal.

show abstract