louder sound of some pitch explain
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Sound moves in waves, with a portion of air that is compressed followed by a portion of air that is unusually sparse, hitting you one after the other with some frequency (in a pure tone), such as 500 of each (high pressure and low pressure) every second, for example. The pitch is based on this frequency.
The volume is based on HOW high and HOW low those pressures are in each pulse.
Thus, if you have very high followed by very low pressure pulses, but only a few of those pulses hit you per second, then you will have a loud, but low pitch, sound.
A large drum can create a loud but low pitch sound, for example. The drum being large means that it takes a lot of time for air to move to the back of the drum and then to the top again, so it doesn’t vibrate very quickly, and there aren’t a lot of pulses of pressure coming from it per second. However, if it’s struck hard, and pulled tight, the skin of the drum can produce a lot of force pushing on the air with each vibration, making the pressure difference of each pulse high, and thus making the sound loud.
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