Desarrollo de un sistema para la obtención automática del círculo armónico de una canción

Abstract

The musical development has progressed significantly with the technology, in that sense, in this project the thing to be done is a system that allowed finding the chords that make the harmonic circle in a song, it is for songs with the same circle during all musical piece. Then in principle the signa lis digitalized to proceed with the digital treatments. Later a filter and a segmentation are performed. This is done to analyze shorts fragments in the signal at once. When every fragment is ready then every segment's spectrum is obtained separately to find what pattern of notes, corresponding to diferent chords, are present in every segment and finally detecting the chord that is being played. To do this the different Matlab tolos were used including the graphical interface. In that sense a clear and comfortable interface was developed where the user can extract the song and detecting the chords, so the user can use it without instruction.