ABSTRACT
An important concept related to sound perception is the critical bandwidth, a range of frequencies that evoke a similar response in the auditory system. If the sound has the impression of tension, is unpleasant or unstable, and causes a desire to be resolved to consonant intervals, it is considered dissonant Dissonances can be classified, regarding atonal music, as resolution, in tonal music theory, is the move of a note or chord from dissonance to consonance. Music organization is, in a certain sense, similar to mathematics; and a musical style is akin to a language development, because physiological, physical, and neurological characteristics can impose limits to the development of a musical style. Leonhard Euler devised a mathematical formula to deal with the dissonance question. In 1739, Euler defined an arithmetic function that established a relation between integer ratios and dissonance.
