The Fundamentals of Sound

-Sound happens when a moving object causes the matter around it to vibrate, resulting in sound waves
-We hear sounds when sound waves travel through matter and cause our ear drums to vibrate
-A sound wave can be thought of a periodic movement through space over time
-The nature of that space determines a sounds amplitude
The speed at which a wave vibrates determines its frequency
-The most basic form of sound wave is called a sine wave. Sine waves are a fundamental tone, meaning that they contain no harmonics
-Different materials produce different types of wave forms, all of the following determine the nature of the sound an object produces:
How dense is an object?
What is it made of?
Is it rough or smooth?
How different is it from other sounds?
What space is it sounding in?
-By adjusting the frequency, amplitude, wave shape and envolope of a sound you can make entirely new sounds from existing material.