A ruler has a flat, wide and long surface, more than 1 inch wide and sometimes 12 inches long, it has 12 square inches in area.
When you hold the ruler horizontally and suddenly stomp it flat over a desk, the strong loud sound happens.
During the time you are moving and accelerating the ruller towards the desk, you are compressing air under the bottom part of the ruller. The speed and mass of the ruller hit the desk fast, really fast, it may reach more than 20km/h.
Within 1/4 of an inch from the desk, the ruler is compressing air against the desk, this air has no way to go, except to the sides.
6 cubic inches of air being moved to the sides at 20km/h in a sudden direction change, creates a loud noise, mostly because the vacuum created over the ruler, suddenly occupied by air that is surrounding the ruler.
Air compression and decompression causes lots of noises and sounds we hear all day long. Clapping is one of them. Three people clapping can block any other people conversation, it is really loud.
wagnerlip
The surround sound speakers were really loud.
a loud sound
not loud at all it doesn't make a sound
They sound like a trumpet. Either that or someone blowing their nose really loud or obnoxiously, which is basically what elephants do with their trunks to make the noise.
A short-lasting, but loud noise. Such as a rifle shot, or a hammer bang. These make the sound appear louder than it really is.
They make a really loud and weird mewing sound. Its been used to good effect in a few murder mystery shows.
They make a really loud and weird mewing sound. Its been used to good effect in a few murder mystery shows.
If naturally you're soft, then no, if naturally your loud, then yes.
A very loud BANG!
Elastic bands will hurt when pinged and do not make a very large sound in fact nothing to disturb anyone really
Sing in a microphone and amplify that.
a very loud noice