Parameters acoustic and high-speed kymography identified effects of voiced vibration and vocal fry exercises

To identify the immediate effects of voiced vibration and vocal fry exercises on healthy subjects by means of acoustic parameters and high-speed kymography. Thirty healthy subjects (18 women and 12 men, aged from 19 to 45 years old) participated in this study. The voices were recorded at the range o...

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Bibliographic Details
Published in:CoDAS (São Paulo) 2013-01, Vol.25 (6), p.577-583
Main Authors: Pimenta, Regina Aparecida, Dájer, María Eugenia, Hachiya, Adriana, Tsuji, Domingos Hiroshi, Montagnoli, Arlindo Neto
Format: Article
Language:English
Subjects:
Acústica
Adult
AUDIOLOGY & SPEECH-LANGUAGE PATHOLOGY
Female
Fonoterapia
Humans
Kymography
Male
Middle Aged
Qualidade da voz
REHABILITATION
Sex Factors
Treinamento da voz
Vibration
Vocal Cords - physiology
Voice Quality - physiology
Voz
Young Adult
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Summary:To identify the immediate effects of voiced vibration and vocal fry exercises on healthy subjects by means of acoustic parameters and high-speed kymography. Thirty healthy subjects (18 women and 12 men, aged from 19 to 45 years old) participated in this study. The voices were recorded at the range of 44.100 samples/second, before and after of the vocal exercises. We developed a computational routine to extract jitter and shimmer. High-speed kymography was generated from laryngeal images for the analysis of the phase times: closed (CPh), open (OPh), of closing (cPh) and of opening (oPh) and used the paired t-Student test and the Mann-Whitney test, with a significance level of 0.05. After voiced vibrations, acoustic parameters showed reduced jitter for both genders (p=0.018 for men and p
ISSN:2317-1782
2317-1782
DOI:10.1590/S2317-17822014000100010