Search for: [Abstract = "programme were used. The distance of speech signal of nasal vowels from pattem signal was decreased in all 8\/8 measunnents \(100% population\) in early control and further decreason for 5\/8 consecutive measurments in late control was confinned. There was no statistic differences according to the distance of signal for vowe\] ,,a\" from pattem signal, neither in early nor in the late control examination. Theese reults strongly indicate on improvement of the voice and speech acoustics, especially for nasal vowels in patients, who underwent anlysed surgical treatment. Nowadays, on the present reserch state, it is possible to confinn co\-existance of vocal and ventilation disorders. According to surgical indications, the acoustic analysis could be useful as an additional test in cases with therapeutic difficoultness, because the existance of acoustic symptoms points at the partial or total nasal blockage."]

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