RESUMEN
Objective To compare the alaryngeal speakers'voice acoustic parameters and intra-tracheal pressure when they spoke different vowels.Methods 24 patients after tracheo-esophageal shunt phonation by the anastomosis of the membranous portion of the tracheal section with the anterior wall of esophagus after total laryngectomy and 16 esophageal speakers enrolled in this study. The voice acoustic parameters were measured when they spoke soft /a/ and soft /i/. The intra-tracheal pressure of 20 TE speakers was measured when spoke /a/ and /i/.Results There were no significant differences between vowel /a/ and /i/ in the two alaryngeal speaker group. The pressure of TE speakers after Shang's procedrue for comfortable /i/ was higher than that for /a/, and there was significant difference.Conclusion There were the same clinical meanings in evaluating alaryngeal voice acoustic aspect. when using vowel /a/ and /i/. However when using different vowel, the intrtracheal pressure was different in TE speakers.