Exploring the anatomical encoding of voice with a mathematical model of the vocal system
The faculty of language depends on the interplay between the production and perception of speech sounds. A relevant open question is whether the dimensions that organize voice perception in the brain are acoustical or depend on properties of the vocal system that produced it. One of the main empiric...
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todo:paper_10538119_v141_n_p31_Assaneo2023-10-03T16:00:37Z Exploring the anatomical encoding of voice with a mathematical model of the vocal system Assaneo, M.F. Sitt, J. Varoquaux, G. Sigman, M. Cohen, L. Trevisan, M.A. Auditory cortex Biomechanical model of the vocal system Neural coding of voice Voice identity accuracy adult anatomical variation Article auditory cortex child comparative study female functional magnetic resonance imaging human human experiment larynx male mathematical computing mathematical model phonetics priority journal speech perception vocal apparatus vocal cord vocal fold pressure vocal fold tension vocalization voice analysis voice parameter anatomic model auditory stimulation biological model communication aid computer simulation glottis nerve cell network physiology procedures speech voice young adult Acoustic Stimulation Adult Auditory Cortex Communication Aids for Disabled Computer Simulation Female Glottis Humans Male Models, Anatomic Models, Neurological Nerve Net Speech Speech Acoustics Speech Perception Voice Voice Quality Young Adult The faculty of language depends on the interplay between the production and perception of speech sounds. A relevant open question is whether the dimensions that organize voice perception in the brain are acoustical or depend on properties of the vocal system that produced it. One of the main empirical difficulties in answering this question is to generate sounds that vary along a continuum according to the anatomical properties the vocal apparatus that produced them. Here we use a mathematical model that offers the unique possibility of synthesizing vocal sounds by controlling a small set of anatomically based parameters. In a first stage the quality of the synthetic voice was evaluated. Using specific time traces for sub-glottal pressure and tension of the vocal folds, the synthetic voices generated perceptual responses, which are indistinguishable from those of real speech. The synthesizer was then used to investigate how the auditory cortex responds to the perception of voice depending on the anatomy of the vocal apparatus. Our fMRI results show that sounds are perceived as human vocalizations when produced by a vocal system that follows a simple relationship between the size of the vocal folds and the vocal tract. We found that these anatomical parameters encode the perceptual vocal identity (male, female, child) and show that the brain areas that respond to human speech also encode vocal identity. On the basis of these results, we propose that this low-dimensional model of the vocal system is capable of generating realistic voices and represents a novel tool to explore the voice perception with a precise control of the anatomical variables that generate speech. Furthermore, the model provides an explanation of how auditory cortices encode voices in terms of the anatomical parameters of the vocal system. © 2016 JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_10538119_v141_n_p31_Assaneo |
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Universidad de Buenos Aires |
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I-28 |
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R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Auditory cortex Biomechanical model of the vocal system Neural coding of voice Voice identity accuracy adult anatomical variation Article auditory cortex child comparative study female functional magnetic resonance imaging human human experiment larynx male mathematical computing mathematical model phonetics priority journal speech perception vocal apparatus vocal cord vocal fold pressure vocal fold tension vocalization voice analysis voice parameter anatomic model auditory stimulation biological model communication aid computer simulation glottis nerve cell network physiology procedures speech voice young adult Acoustic Stimulation Adult Auditory Cortex Communication Aids for Disabled Computer Simulation Female Glottis Humans Male Models, Anatomic Models, Neurological Nerve Net Speech Speech Acoustics Speech Perception Voice Voice Quality Young Adult |
| spellingShingle |
Auditory cortex Biomechanical model of the vocal system Neural coding of voice Voice identity accuracy adult anatomical variation Article auditory cortex child comparative study female functional magnetic resonance imaging human human experiment larynx male mathematical computing mathematical model phonetics priority journal speech perception vocal apparatus vocal cord vocal fold pressure vocal fold tension vocalization voice analysis voice parameter anatomic model auditory stimulation biological model communication aid computer simulation glottis nerve cell network physiology procedures speech voice young adult Acoustic Stimulation Adult Auditory Cortex Communication Aids for Disabled Computer Simulation Female Glottis Humans Male Models, Anatomic Models, Neurological Nerve Net Speech Speech Acoustics Speech Perception Voice Voice Quality Young Adult Assaneo, M.F. Sitt, J. Varoquaux, G. Sigman, M. Cohen, L. Trevisan, M.A. Exploring the anatomical encoding of voice with a mathematical model of the vocal system |
| topic_facet |
Auditory cortex Biomechanical model of the vocal system Neural coding of voice Voice identity accuracy adult anatomical variation Article auditory cortex child comparative study female functional magnetic resonance imaging human human experiment larynx male mathematical computing mathematical model phonetics priority journal speech perception vocal apparatus vocal cord vocal fold pressure vocal fold tension vocalization voice analysis voice parameter anatomic model auditory stimulation biological model communication aid computer simulation glottis nerve cell network physiology procedures speech voice young adult Acoustic Stimulation Adult Auditory Cortex Communication Aids for Disabled Computer Simulation Female Glottis Humans Male Models, Anatomic Models, Neurological Nerve Net Speech Speech Acoustics Speech Perception Voice Voice Quality Young Adult |
| description |
The faculty of language depends on the interplay between the production and perception of speech sounds. A relevant open question is whether the dimensions that organize voice perception in the brain are acoustical or depend on properties of the vocal system that produced it. One of the main empirical difficulties in answering this question is to generate sounds that vary along a continuum according to the anatomical properties the vocal apparatus that produced them. Here we use a mathematical model that offers the unique possibility of synthesizing vocal sounds by controlling a small set of anatomically based parameters. In a first stage the quality of the synthetic voice was evaluated. Using specific time traces for sub-glottal pressure and tension of the vocal folds, the synthetic voices generated perceptual responses, which are indistinguishable from those of real speech. The synthesizer was then used to investigate how the auditory cortex responds to the perception of voice depending on the anatomy of the vocal apparatus. Our fMRI results show that sounds are perceived as human vocalizations when produced by a vocal system that follows a simple relationship between the size of the vocal folds and the vocal tract. We found that these anatomical parameters encode the perceptual vocal identity (male, female, child) and show that the brain areas that respond to human speech also encode vocal identity. On the basis of these results, we propose that this low-dimensional model of the vocal system is capable of generating realistic voices and represents a novel tool to explore the voice perception with a precise control of the anatomical variables that generate speech. Furthermore, the model provides an explanation of how auditory cortices encode voices in terms of the anatomical parameters of the vocal system. © 2016 |
| format |
JOUR |
| author |
Assaneo, M.F. Sitt, J. Varoquaux, G. Sigman, M. Cohen, L. Trevisan, M.A. |
| author_facet |
Assaneo, M.F. Sitt, J. Varoquaux, G. Sigman, M. Cohen, L. Trevisan, M.A. |
| author_sort |
Assaneo, M.F. |
| title |
Exploring the anatomical encoding of voice with a mathematical model of the vocal system |
| title_short |
Exploring the anatomical encoding of voice with a mathematical model of the vocal system |
| title_full |
Exploring the anatomical encoding of voice with a mathematical model of the vocal system |
| title_fullStr |
Exploring the anatomical encoding of voice with a mathematical model of the vocal system |
| title_full_unstemmed |
Exploring the anatomical encoding of voice with a mathematical model of the vocal system |
| title_sort |
exploring the anatomical encoding of voice with a mathematical model of the vocal system |
| url |
http://hdl.handle.net/20.500.12110/paper_10538119_v141_n_p31_Assaneo |
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