What causes the 96 Civic to whistle near the belts? on 1996 Honda Civic

My civic has been making whistling noises near the belts, or directly under them. I'm not sure which belt it is, or if it could be something else. Has anyone had experience with this?

Asked by for the 1996 Honda Civic
check the belts if loose or cracked, check belt tension maybe needs to be adjusted or replace. sometimes the alternator make noise also.