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Vibrato and tremor extent spectrum: algorithm and applications.

Maurílio N Vieira¹, José Eduardo de C Silva, Hani C Yehia

¹Departamento de Física, Universidade Federal de Minas Gerais, Caixa Postal 702, CEP 30.123-970, Belo Horizonte, MG, Brazil. maurilio@fisica.ufmg.br

The Journal of the Acoustical Society of America

|July 27, 2011

Summary

This study introduces a novel frequency domain method to measure vibrato and tremor extent. By processing fundamental frequency (f(0)) contours, this technique quantifies voice undulations effectively.

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Area of Science:

Acoustics
Speech Science
Signal Processing

Background:

Vibrato and tremor extent are crucial voice quality parameters.
Existing methods for measuring these voice undulations have limitations.
The spectral analysis of fundamental frequency (f(0)) undulations has not been fully explored for extent measurement.

Purpose of the Study:

To develop and validate a new method for measuring vibrato and tremor extent.
To investigate the possibility of measuring extent in the spectra of fundamental frequency (f(0)) low-frequency undulations.
To provide a prompt and effective frequency domain approach for voice analysis.

Main Methods:

Developed a method to cancel average (DC) values and baseline drifts of f(0) contours.
Applied spectral weighting using the time window DC value.
Obtained extent measures in the frequency domain.

Main Results:

Demonstrated that extent measures can be promptly obtained in the frequency domain.
Successfully applied the method to both synthetic and human voice data.
Showcased the effectiveness of spectral analysis for quantifying voice undulations.

Conclusions:

The proposed frequency domain method offers a novel approach to measure vibrato and tremor extent.
This technique overcomes limitations of previous methods by analyzing f(0) spectra.
The findings have implications for objective voice assessment and analysis.