Check the wheel bearings to start
What is it when you hear whistling and no one is there?
because something is clogged in the pipes
It is quiet obvious when you have a turbo because when you accelerate you hear a whistling sound. The turbo noise is unmistakable.
the wind is so strong that is bllowing through the trees
This could mean your pump bearings are going bad.
Vacuum leaks in the A.C. system. DO YOU hear a faint humming or whistling sound?
stop breathing...
dog whistling
speaking from experience from ww2 Southampton bombing raids; bombs traveling at or above the velocity of sound; make a screaming, or whistling sound. The better you hear them; the more certainty it is not falling on you. The one that hits you you will not hear; for it gets there before its sound. ----
A whistle works by forcing air quickly through a narrow opening, creating high-pitched sound vibrations. The vibrations travel through the air as sound waves and produce the whistling noise that we hear. The shape and size of the whistle's chamber help amplify the sound.
You'll hear a howling/grinding sound coming from the front of your vehicle. Depending on which side it is, if the sound goes away when you move your steering wheel to the right its your left hub assembly. If its when you pull steering left its your right assembly.
they can hear sound in ears