Not enough info. What kind of noise? Coming from where? Under what situation(s) does it occur?
Some possible causes of partial deafness include prolonged exposure to loud or constant noise, disease and injury.
Most common culprit is a slipping belt.
Failing strut, cv joint or steering bushing.
The prisoner became agitated when she found that her parole had been denied .
if its a knocking noise whilst turning or in really bad cases constant then one of the half shafts constant velocity joints is probably failing due to the rubber gattor
Questioner gives no indication where the noise is coming from, but it COULD be an indication of a failing CV (constant velocity) joint.
Irregular choppy wear in a tire, bad wheel bearing.
Inadequate oil in a/c comp, bad bearings,bad clutch are possible causes.
it depends
You need to buy spark plug leads with a surpresser built in to them
Front sway bar link bushings. Cost under $50, took about an hour to replace both sides.
A computer tower may make a surging noise rather than a constant humming noise if the case's screws are not properly tightened. Another reason for such a surging noise is the imminent failure of a fan.