Volume is dependent on how hard the air is pushed through. Sound travels more slowly than light. Sound waves travel at the same speed, but vibrate in different ways. Some vibrate quickly and have a high frequency or pitch, while others vibrate slowly and give a lower pitch.

High frequencies are perceived louder than low frequencies by the human ear. So in order to become louder when singing deep notes, more air is required. The deeper you get, the quieter you become, the more air you need.

The frequency of a sound wave is what your ear understands as pitch. A higher frequency sound has a higher pitch, and a lower frequency sound has a lower pitch….10.3 Characteristics of a sound wave (ESADD)

Humans can detect sounds in a frequency range from about 20 Hz to 20 kHz. (Human infants can actually hear frequencies slightly higher than 20 kHz, but lose some high-frequency sensitivity as they mature; the upper limit in average adults is often closer to 15–17 kHz.)

4000 Hz

For reference, most medical professionals say that 85 decibels can permanently damage a human’s hearing. In the case of the . 50 BMG, it topped out at 123.7 decibels.

You can muffle or suppress the sound of a weapon, but you can’t silence it.

There’s really no way to survive a . 50-cal. 50-cal. hits with so much energy that it would likely kill you even if your body armor could stop it.

A single . 50 BMG isn’t going to cut a guy in half unless he gets shot multiple times across the midsection.