Immediate Effect of a Resonance Tube on the Vocal Range Profile of Choristers

Abstract

The aim of this study was to determine the immediate effect of the resonance tube technique associated with ascending and descending glissando on the vocal range profile (VRP) of amateur choristers. The sample consisted of 40 choristers aged between 18 and 57 years (average of 26.28 ± 7.51 years) with the following voice types: soprano, contralto, tenor and bass, with no vocal symptoms. Recordings of the VRP of the choristers were made before and after performing the resonance tube technique executed in ascending and descending glissando for 3 minutes in each modality. The recordings were made in the VRP of specific software. The VRP of the choristers increased after application of the ascending and descending technique. Stratifying by voice types showed an increase in contralto, tenor and bass after the ascending glissando technique and in tenor and bass after the descending technique. The resonance tube technique associated with ascending and descending glissando increased the VRP in contralto, tenor and bass voice types, as well as the maximum frequency and range in hertz and semitones, in all the voice types of the choristers under study, justifying its application in the vocal warm-up of this population.