Comparison of some mechanical models of larynx in the synthesis of voiced sounds



Document title: Comparison of some mechanical models of larynx in the synthesis of voiced sounds
Journal: Journal of the Brazilian Society of Mechanical Sciences and Engineering
Database: PERIÓDICA
System number: 000312330
ISSN: 1678-5878
Authors: 1
2
3
4
Institutions: 1Universidade Federal Fluminense, Departamento de Matematica Aplicada, Niteroi, Rio de Janeiro. Brasil
2Universidade de Brasilia, Departamento de Matematicas, Brasilia, Distrito Federal. Brasil
3Pontificia Universidade Catolica do Rio de Janeiro, Departamento de Engenharia Mecanica, Rio de Janeiro. Brasil
4Universidade Federal Fluminense, Departamento de Engenharia de Telecomunicacoes, Niteroi, Rio de Janeiro. Brasil
Year:
Season: Oct-Dic
Volumen: 28
Number: 4
Pages: 461-466
Country: Brasil
Language: Inglés
Document type: Artículo
Approach: Experimental
English abstract The process of voiced sounds production can be described as follows: air coming from the lungs is forced through the narrow space between the two vocal folds, which are set in motion in a frequency governed by the tension of their tissues. The vocal folds change the continuous flow that comes from the lungs into a series of pulses. Then, as the flow passes through the oral and nasal cavities it is amplified and changed until it is finally radiated from the mouth. This complex process can be modeled by a system of integral-differential equations. In spite of such complexity, this paper shows that it is possible to obtain synthetic voice sounds of satisfactory realism using simple mathematical models. The perception of a synthetic sound as natural is increased by choosing suitable waveforms for the time-varying subglottal pressure, rather than by augmenting the number of degrees of freedom of the mechanical model. This paper also shows possible ways to adapt the models to voices of men, women and children
Disciplines: Ingeniería,
Ciencia y tecnología,
Ciencias de la computación
Keyword: Ingeniería biónica y cibernética,
Programación,
Voz,
Procesamiento de señales
Keyword: Engineering,
Science and technology,
Computer science,
Bionics and cybernetics,
Programming,
Voice,
Signal processing
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