Generally sound waves are depicted as simple sine waves, where volume is related to amplitude, and there is periodic motion. Realistically sound waves aren’t as simple. I attached a picture of a dissipating sound wave. I would appreciate if you guys could answer a couple questions I have about it. 1.) Aren’t waves defined by periodic motion? Can real sound waves really be described as waves if they change in amplitude over time? 2.) How loud would the sound wave be at each of the three points? Would they each have the same volume as perfect non-dissipating sine waves would if they were drawn out to go through those points?