Meaning : Sound of any kind (especially unintelligible or dissonant sound).
He enjoyed the street noises.
They heard indistinct noises of people talking.
During the firework display that ended the gala the noise reached 98 decibels.
Meaning : A loud outcry of protest or complaint.
The announcement of the election recount caused a lot of noise.
Whatever it was he didn't like it and he was going to let them know by making as loud a noise as he could.
Meaning : Incomprehensibility resulting from irrelevant information or meaningless facts or remarks.
All the noise in his speech concealed the fact that he didn't have anything to say.