Modeling the Voice of Pathological /a/ Utterance Using Organ Pipe Design Model

EasyChair Preprint 2499

Abstract

Precedents and objectives: The sound wave is propagating in air and is received by the ear of the listener. Many models of voice production were done based on two-mass model and source-filter. The resulted wave is impacted by excitation source properties, the properties of the medium which include vocal tract properties, damping forces, and initial and boundary conditions. A pathological voice is a sound wave that was impacted by one or more factors cited above. The objective of the present paper is to simulate the behavior of the fundamental frequency of utterance /a/ by using organ pipe model, In order to know the parameters that govern the behavior of /a/ utterance to be classified as pathological or normal voice of /a/, in order to fine-tune these parameters. Materials and methods: The modeling was carried out using the variations of sound pressure level function of difference radius, thickness and young’s module of the voice production apparatus. The used software is COMSOL. Results: The resonant frequency could be shifted according to the values of inner radius and thickness; thus a pathological voice can be transformed to normal voice upon fine-tuning these parameters or adjusting damping forces.

Keyphrases: /a/ utterance, COMSOL, Pathological voice, modeling, organ pipe mode

@booklet{EasyChair:2499,
  author    = {Brahim Sabir and Fatima Rouda and Ghizlane Mabchour and Bouzekri Touri and Mohamed Moussetad},
  title     = {Modeling the Voice of Pathological /a/ Utterance Using Organ Pipe Design Model},
  howpublished = {EasyChair Preprint 2499},
  year      = {EasyChair, 2020}}