Components of Sound 
There are several components that most influence how sound effects are perceived. By modifying or eliminating any one or a combination of these components, the sound effects are changed or totally new sounds are created.
"Sound envelope components":
"Record and playback component":
Pitch is determined by how many times a sound wave repeats itself within one second of time. The pitch of a sound is determined by the frequency of the sound. The perceived pitch of a sound is just the ear's response to frequency, i.e., for most practical purposes the pitch is just the frequency. Pitch is elaborated later in this paper.
Timbre is that
unique combination of fundamental frequency, harmonics, and overtones that give
each voice, musical instrument, and sound effect its unique coloring and