What is vibrato definition?

Vibrato is a technique used to produce an oscillating and wavering sound on a musical instrument. It is achieved by varying the pitch of a note as it is sustained, either by shaking the instrument or by using the fingers to alter the pitch. Vibrato is particularly common in stringed instruments such as the violin, cello, and guitar, but it can also be used on wind instruments, such as the flute and trumpet, as well as on the human voice. The speed and width of the vibrato, as well as the amount of pitch variation, can be varied to create different effects and emotions. Some people also view vibrato as a means of adding depth or personality to a note, beyond simply extending its duration.