A Word about Air and an Air about Words
The fact that humans have actually walked on the airless Moon is amazing. In my fantasy, humans could survive on the moon without the assistance of space suits by sucking oxygen out of moon rocks.
Such people, however, would be totally dependent upon sign language. This is not only because their mouths would be full of rocks, but also because there is no atmosphere on the moon to carry a sound wave.
On Earth we have atmosphere and, hence, we have sound. We think, and communicate in words and sentences which are composed of units of sound.
It's the air, then, that makes oral language possible. Let's look at this phenomenon and see how it basically works and how it effects speech and language when it doesn't.
We will be looking at three aspects of sound in air: Frequency, Intensity and Phase.
NOTES: See some technical detail on frequency and intensity.
NOTES: A Tutor on Sound.
NOTES: More information on the parameters of sound.
NOTES: More information that you would need in a lifetime about the parameters of sound.