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dropping coins from hand to solid ground.
Sounds like you are getting coolant into a cylinder , is your coolant level dropping ? Could be a bad head gasket , warped or cracked head
it sounds like something is exploding or people are dropping bombs
my stomach is boiling what are the causes?
What causes an ocean sound in the ear with blocked hearing
The folllowing causes the sounds that you hear when someone plays a cello with a bow is Strings Vibrating
they vibrate..
All these actions produce waves. Musical instruments produce sounds waves in air. Dropping a pebble in water produces waves on the surface of the water.
it is because the Glottis briefly stops the air flow. that causes the air to get out hardly and causes the grunting sounds.
sounds real pretty to me.
by air blowing into them
Sounds like an infection. Get it looked at.