Apparatus and method for visualization of music using note extraction
The present disclosure relates to a system and method for visualization of music and other sounds using note extraction. In one embodiment, the twelve notes of an octave are labeled around a circle. Raw audio information is fed into the system, whereby the system applies note extraction techniques to isolate the musical notes in a particular passage. The intervals between the notes are then visualized by displaying a line between the labels corresponding to the note labels on the circle. In some embodiments, the lines representing the intervals are color coded with a different color for each of the six intervals. In other embodiments, the music and other sounds are visualized upon a helix that allows an indication of absolute frequency to be displayed for each note or sound.
1. A method for visualizing music, comprising the steps of:
(a) placing twelve labels in a pattern of a circle, said twelve labels corresponding to twelve respective notes in an octave, such that moving clockwise or counter-clockwise between adjacent ones of said labels represents a musical half-step;
(b) identifying an occurrence of a first one of the twelve notes;
(c) identifying an occurrence of a second one of the twelve notes;
(d) identifying a first label corresponding to the first note;
(e) identifying a second label corresponding to the second note;
(f) creating a first line connecting the first label and the second label, wherein:
(1) the first line is a first color if the first note and the second note are separated by a half step;
(2) the first line is a second color if the first note and the second note are separated by a whole step;
(3) the first line is a third color if the first note and the second note are separated by a minor third;
(4) the first line is a fourth color if the first note and the second note are separated by a major third;
(5) the first line is a fifth color if the first note and the second note are separated by a perfect fourth; and
(6) the first line is a sixth color if the first note and the second note are separated by a tri-tone;
wherein said identifying an occurrence of a first one of the twelve notes step comprises the steps of:
(1) receiving a raw audio input signal;
(2) performing a fast fourier transform analysis on said raw audio input signal to determine a first primary frequency;
(3) determining an occurrence of a first one of the twelve notes based on the first primary frequency; and
wherein said identifying an occurrence of a second one of the twelve notes step comprises the steps of:
(1) performing a fast fourier transform analysis on said raw audio input signal to determine a second primary frequency;
(2) determining an occurrence of a second one of the twelve notes based on the second primary frequency.