Modelling of Human Glottis in VLSI for Low Power Architectures
The Glottal Source is an important component of voice as it can be
considered as the excitation signal to the voice apparatus.
Nowadays, new techniques of speech processing such as speech
recognition and speech synthesis use the glottal closure and
opening instants. Current models of the glottal waves derive their
shape from approximate information rather than from exactly
measured data. General method concentrate on assessment of the
glottis opening using optical, acoustical methods, or on
visualization of the larynx position using ultrasound, computer
tomography or magnetic resonance imaging techniques. In this
work, circuit model of Human Glottis using MOS is designed by
exploiting fluid volume velocity to current, fluid pressure to
voltage, and linear and nonlinear mechanical impedances to linear
and nonlinear electrical impedances. The glottis modeled as
current source includes linear, non-linear impedances to represent
laminar and turbulent flow respectively, in vocal tract. The MOS
modelling and simulation results of glottal circuit has been carried
out on BSIM 3v3 model in TSMC 0.18 micrometer technology
using ELDO simulator.
Keywords: Alveolar pressure; MOS resistor; voice source; vocal
fold
Download Full-Text
