Does it make noise when stopped and the engine running as well?
If not, I'd check for a bad wheel bearing.
amplifiers
when warmed up high pitch noise at idle and it gets louder during acceleration Response to : Can someone actually answer this question? This is my question and the above answer makes no sense.
it makes it louder
Dig a Hole
It's amplification.
It makes it louder
you sing through a microphone and it makes the voice louder. the sound of the louder voice comes from the amplifier.
Diesel trains are louder than electric trains because you the noise that the diesel engine makes, which is louder than the electric engine.
Some people get more dust and dirt in their noses and it makes them sneeze louder.
pick ups and an amp
bullhorn
It makes enemy footsteps louder