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Multidimensional acoustic analysis of pathological voice

Author(s): Petrović-Lazić Mirjana | Babac Snežana | Ivanković Zoran | Kosanović Rade

Journal: Srpski Arhiv za Celokupno Lekarstvo
ISSN 0370-8179

Volume: 137;
Issue: 5-6;
Start page: 234;
Date: 2009;
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Keywords: voice disorders | acoustic voice analysis | vocal foldnodules | vocal therapy

Introduction. There are subjective and objective ways to examine the effects of vocal therapy in voice disorders. The most precise and objective check-up is the use of computer voice analysis. Objective. The aim of the research was to perform a detailed analysis of acoustic structure of the vowel A before and after voice treatment in patients with vocal fold nodules in order to obtain objective verification of the vocal rehabilitation success. Methods. We examined 30 female patients, aged 34.6±6.69 years, with vocal fold nodules. Acoustic parameters of voice were compared with the control group consisting of 21 subjects without voice pathology. In all persons the vowel A was recorded and analyzed before and after a month of vocal therapy. The success of the vocal therapy was tracked using computer analysis of vocal structure. Signal, noise and tremor parameters were processed. Results. Of the analyzed vowel A parameters: STD, PER, JITA, JITT, RAP, vFO, ShdB, SHIM, APQ, VTI, SPI, F0, NHR, FTRI, eleven improved (p
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