OBJECTIVE: To compare the modification of vocal acoustic and auditory perception in women without vocal complaints or laryngeal affections, after executing the finger-kazoo technique (FK) and phonation into glass tubes immersed in water (PIGTW). METHODS: Twelve women participated in the group that performed the PIGTW technique and 46 women participated in the group that performed the FK technique. The vowel /a:/ was collected for acoustic analysis. The intra-rater reliabilities for the FK group were 0.57, 0.49, and 0.53 and the inter-rater reliability was 0.2. The intra-rater reliabilities for the PIGTW group were 0.78, 0.52, 0.51 and inter-rater was 0.35. The auditory perception using the RASATI scale showed that intra-rater reliabilities for the GFK group were 0.54, 0.71, and 0.57 and the inter-rater reliability was 0.19; the intra-rater reliabilities for the PIGTW group were 0.72, 0.56, and 0.46 and the inter-rater reliability was 0.31. The techniques were performed on three series of 15 repetitions, with 30 seconds of rest between them. RESULTS: In the definition of formant 1, there was a significant difference between the groups with improvement in favor of the PIGTW group. There was a significant difference between the groups with respect to the subharmonic presence, whereas the PIGTW group showed a greater number of subjects with improvement. There was a greater reduction in the standard deviation of f0 after FK. After PIGTW there was a higher reduction in the smoothed pitch perturbation quotient, variation of f0, and voice turbulence index. These results were statistically significant. The auditory perceptual analysis showed no significant difference between the groups. CONCLUSION: The evaluated aspects were more greatly improved with the PIGTW technique than with the FK technique.