engleski

Harmonics to noise ratio in vocal professional voices

There is no arguing about importance of voice, especially in group of vocal professional voices. The question is what characterises, the most, normal or pathological voice in relation to aspects of human working life. Harmonics to noise ratio, according to findings from voice disorders field, is the most representative method to differ normal from pathological voice. In this research it was found significant differences in harmonics to noise ratio in relation to the length of working age of 29 teachers of primary schools in Zagreb. Teachers with the longest working age (40-yr.) showed the most distorted voices. In the group of teachers with 10 years of professional work it is found the best quality of voice with great ratio of harmonics to noise. Acoustical analyses were made by EZVoicePlus (TM) v. 2.0 and Gram. 2.3. Significant statistically differences were established by T – test of Statistica for Windows, ver. 4.5. Work supported by Ministry of Science and Technology of Republic of Croatia.

voice; vocal professionals; harmonic to noise ratio

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