timbre is mainly divided into music and noise, among which there are piano timbre, organ timbre, guitar timbre, bass timbre, female voice, male voice, children's voice, wind and rain, etc. Timbre, also known as timbre, is the characteristic of the sound felt by hearing. The timbre mainly depends on the frequency spectrum of the sound. At the same time, the timbre is largely related to the characteristics that the amplitude of each overtone rises and falls at the beginning and end.

timbre helps to shape the image of bel canto music works in bel canto music tracks, and timbre can play a role in shaping the beauty of its musical image. Bel canto's different timbres also act on music works accordingly, shaping different types of music images. For example, lively and lovely young female images are often expressed by timbre in bel canto. Timbre is conducive to the identification of the singer's singing ability, and it has the effect of locating bel canto singers. Timbre can directly judge the subtleties of role positioning, and the appropriate choice of timbre is helpful to properly express the characteristics of characters.