vibrato

A tremulous or pulsating effect produced in an instrumental or vocal tone by minute and rapid variations in pitch.

A pulsating effect in vocal music produced by the rapid reiteration of emphasis on a tone, as if under the impulse of great emotion.

The musical effect or technique where the pitch or frequency of a note or sound is quickly and repeatedly raised and lowered over a small distance for the duration of that note or sound.

(music) a pulsating effect in an instrumental or vocal tone produced by slight and rapid variations in pitch