From the acoustic-phonetic analysis of the sounds of speech (spectrogram), this dissertation aims to describe vocalic patterns of Brazilian Portuguese (BP) in patients without larynx, held at the beginning and after four months of phonological intervention but also compare these vocalics patterns of the total laryngectomized with other standards established in vocalics subject unchanged in accordance with the standards in the studies referred by Behlau (1984), and also verify that this method of measurement of acoustic analysis through the spectrogram would be a facilitator, an action appropriate, the prognosis for the process of rehabilitation in the issuance of vocalic production of total laryngectomized with therapy instituted. The measures were analyzed acoustic frequency of formants (in Hz), and duration and intensity of vocalic production of Brazilian Portuguese (BP) in patients laryngectomized. For this study, 10 subjects were selected in treatment at the Hospital Cancer of Pernambuco, with seven males and three females, submitted to the total withdrawal of the body laryngeal. The vowels analyzed the Brazilian Portuguese were the oral, presented orally to the participants to repeat, since the majority of the participants was illiterate, combined with the on / k / injector, or facilitating the issuance esophageal and required to repeat the form of stacatto (repetition of consecutive syllable). The recordings were performed in quiet environment. The sampling rate used was 11025 Hz and resolution of 16 bits. For the realization of the acoustic analysis of the samples, were used programs Fonoview, version 1.1, Voxmetria, version 2.7 and Praat, version 4.6.22. The results were discussed and substantiated in the theory of the production of speech acoustics. The results found that the acoustic spectrografic analysis allows the tracking of acoustic parameters allowing a feedback treatment and monitoring, and a means objective and useful for the study of esophageal voice. There were figures for the frequency of acute formants, an increase of 37.29% in intensity after training phonological and shorter duration of spontaneous production of vowels and syllables as you can better control the esophagic voice , production becomes faster . From this study, it is expected that the acoustic spectrografic analysis adapted to be used in clinical practice as a reference method for the prognosis of patients totals laryngectomized in the process of phonological rehabilitation
