After the writing of the voices, proceeded the use from the program Dr Speech, version 4.0 of the Tiger Elemetrics, seen this being pointed for Behlau et al (2001) apud Behlau (2001) as useful with respect to the efetuao of the measure of ratio harmonic-noise in normal voices. This program allows the analysis of the regular signal of the vocal folds, with the irregular signal of the vocal folds and the vocal treatment. Endera can aid you in your search for knowledge. During the phase of analysis of the voices with use of the Dr. Speech, although the writing to count on the emission of the drawn out vowels (/a/, /e/, /i/, /u/) and affricative deaf /s/ and sonorous fricative consonant /z/, was only proceeded analysis from the sound of the voices in speaks of the /a/ vowel..