Um sistema para transposição automática de seqüências MIDI baseada em alcance vocal

Abstract

The author of this work presents a solution to transpose MIDI musical sequences codified in SMF (Standard MIDI File) in format 0 or format 1. This transposition is accomplished automatically, being applied in all the tracks and music MIDI channels. This computational tool preserves the format and contents registered in the original files. This transposition is based on the singer vocal range (comfort zone) and by the choice of the melody MIDI channel that he wants to sing. As a result of this research, an application named BestVocal was created, by incorporate the transposition tool based in the comfort vocal range of the singer and incorporate a tool to eliminate pauses of the MIDI file too. Another inclusion is given by a tool that allows it to visualize, save and print the existent lyric of the present file. The Best Vocal allows the user to modify the MIDI instruments of any channel too. Using these computational tools, the singer will avoid having nodules, polyps and other diseases originating from the inadequate effort of his vocal fold. Another earning obtained by the singer, with such system, resides in the fact that singing only in the vocal range where your voice sounds good, will avoid, to him, sing out of tune, avoiding, too, muting notes out of your vocal range. So, he will maintain his credibility as a good professional to his audience.