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Transmission line inversion and synthesis from the point of view of transient responseThe transmission line inversion problem is applied to the speech communication process. The problem involves acquiring information necessary for synthesis of speech and for making models of the speech production mechanism. Formulation for the problem is derived from an analysis of the human vocal tract functions. It is known that speech sounds are produced by acoustic excitation of the tract by means of quasi-periodic pulses from the vocal cords during vowel sounds and turbulent air flow at various points along the tract during fricative sounds. By assuming plane wave propagation, differential equations are obtained relating the cross sectional area of the tract, the pressure, and the volume velocity. By replacing the pressure factor with a voltage factor and the volume velocity by current, the problem becomes a transmission line problem.
Document ID
19730002898
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Sondhi, M. M.
(Bell Telephone Labs., Inc. Murray Hill, NJ, United States)
Date Acquired
August 7, 2013
Publication Date
August 1, 1972
Publication Information
Publication: NASA. Ames Res. Center Math. of Profile Inversion
Subject Category
Electronics
Accession Number
73N11625
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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