Modelling of Human Glottis in VLSI for Low Power Architectures

TL;DR

This paper presents a VLSI circuit model of the human glottis using MOS transistors to simulate its behavior for low power voice processing applications, based on fluid dynamics and electrical impedance analogies.

Contribution

It introduces a novel MOS-based circuit model of the human glottis that accurately represents its physical and fluid dynamic properties for voice synthesis and recognition.

Findings

Circuit model successfully simulates glottal flow dynamics.

Simulation results align with physiological data.

Model operates efficiently in TSMC 0.18μm technology.

Abstract

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.