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Related Experiment Video

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Synthetic, Multi-Layer, Self-Oscillating Vocal Fold Model Fabrication

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PVR-AFM: A Pathological Voice Repair System based on Non-linear Structure.

Tao Zhang¹, Xiaonan Liu¹, Ganjun Liu¹

¹School of Electrical and Information Engineering, Tianjin University, Tianjin, China, 300072.

Journal of Voice : Official Journal of the Voice Foundation

|September 17, 2023

Summary

This study introduces a novel non-invasive repair system for pathological voices, enhancing speech intelligibility for individuals with voice disorders. The system effectively processes polyp vowels, improving communication accuracy.

Keywords:

AM—FM Structure—Multiple vowels—Pathological Voice Disorder—Voice Repair

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Construction and Characterization of a Novel Vocal Fold Bioreactor

Construction and Characterization of a Novel Vocal Fold Bioreactor

Published on: August 1, 2014

Area of Science:

Speech Signal Processing
Bioacoustics
Medical Engineering

Background:

Existing speech processing systems often overlook individuals with voice disorders.
Pathological voices, common in professionals, older adults, and smokers, require specialized processing.
There is a need for non-invasive systems to repair and improve the intelligibility of disordered speech.

Purpose of the Study:

To develop and evaluate a non-invasive repair system for pathological voices.
To address the specific communication needs of individuals with voice disorders.
To improve the clarity and intelligibility of pathological speech signals.

Main Methods:

Utilized a non-linear model incorporating amplitude-modulation (AM) and frequency-modulation (FM) for pitch and formant extraction.
Developed a pitch extraction algorithm to ensure stability and prevent double-pitch errors in pathological voices.
Designed a formant reconstruction mechanism to accurately determine frequency and bandwidth for voice repair.

Main Results:

The proposed system demonstrated improved intelligibility for pathological speech.
Spectrum observation and objective indicators confirmed the system's effectiveness.
The system successfully repaired multiple polyp vowels (/a/, /i/, /u/).

Conclusions:

The developed non-invasive system effectively repairs pathological voices.
The system enhances speech intelligibility, benefiting individuals with voice disorders.
This approach offers a promising solution for improving voice communication accuracy in specific populations.