====== amplitude ======

===== introduction =====

Amplitude is a factor related to how loud a sound is.

===== text =====

simple explanation from a maker of soundproofing products: https://www.soundproofcow.com/characteristics-of-sound-wave/

another from equipment retailer Sweetwater: https://www.sweetwater.com/insync/amplitude/

===== video =====

a visual comparison of soft and loud sounds: https://www.youtube.com/watch?v=vVaq8OlxkL4

brief video relating it to what we learned about the nature of sound (also previews frequency): https://www.youtube.com/watch?v=-_xZZt99MzY