Nonlinear behavior of vocal fold vibration: The role of coupling between the vocal folds

Giovanni, Antoine; Ouaknine, M.; Guelfucci, Bruno; Yu, Ping; Zanaret, M.; Triglia, Jean‐Michel

doi:10.1016/s0892-1997(99)80002-2

Cited by 71 publications

(45 citation statements)

References 15 publications

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“…Experiments with an excised larynx and computer modelling have shown that the mammalian vocal folds, vibrating asymmetrically, can produce AM with accompanying sidebands that are the result of linear combinations of the two fundamentals (e.g. 2g 0 -f 0 , 2f 0 -g 0 ) (Giovanni et al, 1999;Herzel et al, 1995;Mergell and Herzel, 1997;Neubauer et al, 2001). In such cases, the two vocal folds oscillate at slightly different frequencies, each producing a separate sound pressure wave that is close to the other in fundamental frequency.…”

Section: Nonlinear Phenomena Vs Two-voice Complexitymentioning

confidence: 99%

Two-voice complexity from a single side of the syrinx in northern mockingbirdMimus polyglottosvocalizations

Zollinger

Riede

Suthers

2008

Journal of Experimental Biology

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SUMMARY The diverse vocal signals of songbirds are produced by highly coordinated motor patterns of syringeal and respiratory muscles. These muscles control separate sound generators on the right and left side of the duplex vocal organ, the syrinx. Whereas most song is under active neural control, there has been a growing interest in a different class of nonlinear vocalizations consisting of frequency jumps, subharmonics, biphonation and deterministic chaos that are also present in the vocal repertoires of many vertebrates,including many birds. These nonlinear phenomena may not require active neural control, depending instead on the intrinsic nonlinear dynamics of the oscillators housed within each side of the syrinx. This study investigates the occurrence of these phenomena in the vocalizations of intact northern mockingbirds Mimus polyglottos. By monitoring respiratory pressure and airflow on each side of the syrinx, we provide the first analysis of the contribution made by each side of the syrinx to the production of nonlinear phenomena and are able to reliably discriminate two-voice vocalizations from potentially similar appearing, unilaterally produced, nonlinear events. We present the first evidence of syringeal lateralization of nonlinear dynamics during bilaterally produced chaotic calls. The occurrence of unilateral nonlinear events was not consistently correlated with fluctuations in air sac pressure or the rate of syringeal airflow. Our data support previous hypotheses for mechanical and acoustic coupling between the two sides of the syrinx. These results help lay a foundation upon which to understand the communicative functions of nonlinear phenomena.

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Section: Nonlinear Phenomena Vs Two-voice Complexitymentioning

confidence: 99%

Two-voice complexity from a single side of the syrinx in northern mockingbirdMimus polyglottosvocalizations

Zollinger

Riede

Suthers

2008

Journal of Experimental Biology

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“…About 89% of PPD commonly develop speech impairments affecting different aspects such as respiration, phonation, articulation and prosody [1]. Speech impairments in PPD are related to the vocal fold bowing and incomplete vocal fold closure [2], besides the vocal production is a highly nonlinear dynamical system, thus the changes caused by impairments in the movement of different muscles, tissues and organs which are involved in the voice production process, such as those suffered by PPD, can be modeled using NLD analysis [3], [4].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Speech from People with Parkinson’s Disease through Nonlinear Dynamics

Orozco-Arroyave

Arias-Londoño

Vargas-Bonilla

et al. 2013

Advances in Nonlinear Speech Processing

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Abstract. Different characterization approaches, including nonlinear dynamics (NLD), have been addressed for the automatic detection of PD; however, the obtained discrimination capability when only NLD features are considered has not been evaluated yet.This paper evaluates the discrimination capability of a set with ten different NLD features in the task of automatic classification of speech signals from people with Parkinson's disease (PPD) and a control set (CS). The experiments presented in this paper are performed considering the five Spanish vowels uttered by 20 PPD and 20 people from the CS.According the results, it is possible to achieve accuracy rates of up to 76,81% considering only utterances from the vowel /i/. When features calculated from the five Spanish vowels are combined, the performance of the system is not improved, indicating that the inclusion of more NLD features to the system does not guarantee better performance.

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“…This includes studies investigating (a) pressure-flow relationships (Alipour et al, 1997;Hottinger et al, 2007); (b) glottal resistance Alipour and Jaiswal, 2009) and glottal efficiency (Titze, 1988); (c) velocity fields within the glottis using particle imaging velocimetry (which in simple terms corresponds to turbulence analysis) ; (d) the dependency of f o on subglottal pressure (Solomon et al, 1994;Alipour and Scherer, 2007;Alipour and Jaiswal, 2008); and (e) the relationship between subglottal pressure and non-linear dynamics of laryngeal voice production (defining the phonation instability pressure, PIP) (Jiang and Titze, 1993;Jiang et al, 2003). Further research emphasis has been directed towards connecting vocal fold motion and geometry with the acoustic signal produced: this includes, amongst others, studies investigating (a) nonlinear dynamics in relation to glottal geometry (vocal fold adduction and/or elongation) (Berry et al, 1996;Jiang et al, 2003) and vocal fold asymmetry (Giovanni et al, 1999); (b) the importance of tissue properties on phonatory characteristics (Chan and Titze, 1999;Alipour et al, 2011); (c) mucosal wave propagation on the vocal folds (Kusuyama et al, 2001;Jiang et al, 2008); and (d) the mechanical forces applying on the vocal folds during phonation (Verdolini et al, 1998;Jiang et al, 2001b;Bakhshaee et al, 2013). This biophysical approach has often also proved useful for physical modeling of voice production (Titze, 1984(Titze, , 1989Alipour-Haghighi and Titze, 1991;Tokuda et al, 2007).…”

Section: Application Of Excised Larynx Experimentation To Human Voicementioning

confidence: 99%

“…Some studies have therefore oriented ELE towards applications to investigate mechanical stress or specific pathologies such as nodules and scarred vocal folds (Jiang and Titze, 1994;Titze, 1994;Jiang et al, 2003). This bridge towards biomedical research has a crucial importance as it lays the ground for developing clinically valuable methodologies for the diagnosis of voice disorders (Giovanni et al, 1999;Jiang et al, 2003). A very recent study illustrating this point was carried out by Latifi et al (2016), in which the authors designed, built, and validated a vocal fold bioreactor system.…”

Section: Application Of Excised Larynx Experimentation To Human Voicementioning

confidence: 99%

Excised larynx experimentation: history, current developments, and prospects for bioacoustic research

Garcia

Herbst

2018

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The study of sound production mechanisms is a crucial, yet understudied, aspect of vocal communication research in vertebrates. In excised larynx experimentation (ELE), phonation is simulated ex vivo by forcing air through a larynx specimen mounted on a laboratory bench. The method provides unique insights into vocal production and allows inference of in vivo conditions. Here, we provide a historical overview of how this technique has been implemented, from antiquity to current state-of-theart setups. We review the advances made by applying ELE to human voice and biophysics research. We then highlight the promising research output resulting from ELE in animal bioacoustics, a research field that has largely overlooked the use of this method until very recently, but is now increasingly relying on this tool. We continue by discussing the limitations of ELE, depending on the focus of investigation. Finally, we suggest how this approach should be implemented and can be applied to various research questions. We conclude by underlining the value that ELE contributes to the comprehension of human voice as well as mammalian and avian vocal communication within an interdisciplinary approach.

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Nonlinear behavior of vocal fold vibration: The role of coupling between the vocal folds

Cited by 71 publications

References 15 publications

Two-voice complexity from a single side of the syrinx in northern mockingbirdMimus polyglottosvocalizations

Two-voice complexity from a single side of the syrinx in northern mockingbirdMimus polyglottosvocalizations

Analysis of Speech from People with Parkinson’s Disease through Nonlinear Dynamics

Excised larynx experimentation: history, current developments, and prospects for bioacoustic research

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