Sound intensity decreases when the distance from the sound source increases. Sound intensity also decreases as the medium through which the sound is traveling becomes more dense or absorbs more of the sound energy.

Sound intensity is a measure of the amount of sound energy passing through a unit area in a specified direction. It is typically measured in units of watts per square meter. Sound magnitude, on the other hand, refers to the perceived loudness of a sound, which is influenced by factors like frequency, distance from the sound source, and individual sensitivity to sound.

Comparison of Sound Pressure and Sound Intensity Levels. Scroll down to related links and look at "Comparison of Sound Pressure and Sound Intensity Levels".

"Sound that is an imitation of another sound" can be an echo, a recording, or an imitation.

sound is measured in decibles