Dynamic Range
Dynamic range refers to the ratio between the quietest and loudest parts of an audio signal. In audio, it typically describes the difference between the softest and loudest sounds a system can reproduce. A wide dynamic range is desirable for capturing and reproducing sound with clarity and detail.
pitch.
Well your voice is the loudest thing you can use, and "ooo"s and "ahh"s are two of the easiest sounds you can get really loud by yelling.
Pleasant sounds are nice to hear and unpleasant sounds are not nice to hear.
it has different sounds
Volume
the loudest would be the flowmaster outlaw series. its just a straight through muffler with no ceramic glass packing. i have one on my f-150 it sounds way good
the difference between cello and viola music is that cello sounds lower then viola
The first is loudest during rest in a healthy person. http://img.medscape.com/pi/emed/ckb/clinical_procedures/79926-79933-1894036-2077859.mp3
If you want the largest sound made by an animal that animal is the Blue Whale.
Sounds to me like it'd be the length of their horns that is the difference.
Volume or Timbre