crescendo

noun
1
a slow steady increase in how loudly a piece of music is played or sung
کرشندو, افزایش تدریجی صدا
opposite diminuendo
2
a slow steady increase in noise; the loudest point of a period of continuous noise
بلندی تدریجی صدا, اوج
Voices rose in a crescendo and drowned him out.
There was a tremendous crescendo of noise.
The shrieks of laughter rose to a crescendo.
(figurative)The advertising campaign reached a crescendo just before Christmas.
synonym swell