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Asthma Detection Research Based on Voice Signal Processing and Machine Learning

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CPPS and Voice-Source Parameters: Objective Analysis of the Singing Voice.

Calvin P Baker¹, Johan Sundberg², Suzanne C Purdy³

¹Department of Voice, School of Music, University of Auckland, Auckland Central, Auckland, New Zealand.

Journal of Voice : Official Journal of the Voice Foundation

|January 10, 2022

Summary

This summary is machine-generated.

Smoothed cepstral peak prominence (CPPS) is affected by fundamental frequency (f_o) and source-spectrum tilt. Vibrato extent shows a nonlinear association with CPPS, while fundamental amplitude has no effect. These findings are crucial for voice analysis.

Keywords:

CPPS Cepstral analysis Singing Voice Voice analysis

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Area of Science:

Acoustics
Speech Science
Signal Processing

Background:

Cepstral analysis, particularly smoothed cepstral peak prominence (CPPS), is increasingly used to assess voice signal dysphonia.
However, the influence of specific voice-source parameters on CPPS remains underexplored.

Purpose of the Study:

To systematically investigate the impact of fundamental frequency (f_o), vibrato extent, source-spectrum tilt, and fundamental amplitude on CPPS values using synthesized tones.
To provide a clearer understanding of how these acoustic parameters influence voice quality measures.

Main Methods:

Synthesized vocal scales using Madde software, systematically varying f_o, vibrato extent, source-spectrum tilt, and fundamental amplitude independently.
Acoustic analysis of synthesized tones using PRAAT software and statistical analysis using SPSS.

Main Results:

CPPS was significantly influenced by independent variations in f_o and source-spectrum tilt.
A nonlinear relationship was observed between vibrato extent and CPPS, with values peaking around 0.6 semitones (ST) before declining.
No significant relationship was found between the amplitude of the voice-source fundamental and CPPS.

Conclusions:

Fundamental frequency (f_o) has a substantial impact on CPPS, necessitating careful consideration in voice analysis.
Findings are particularly relevant for singing-voice research, comparative analyses of pre- and post-treatment data, and inter-subject CPPS comparisons.