Instruction Manual

525
Digital Audio Fundamentals
Editing Audio
.
The actual distance the string moves is called its displacement. This is
proportional to how hard the string is plucked. A greater displacement
results in a louder sound.
The displacement of the string changes as the string vibrates, as shown
here:
The segment marked “A” represents the string as it is pulled back by the
pick; “B” shows it moving back towards its resting point, “C” represents the
string moving through the resting point and onward to its outer limit; then
“D” has it moving back towards the point of rest. This pattern repeats
continuously until the friction of the molecules in the air gradually slows the
string to a stop. As the string vibrates, it causes the molecules of air around
it to vibrate as well. The vibrations are passed along through the air as
sound waves. When the vibrations enter your ear, they make your eardrum
vibrate, and you hear a sound. Likewise, if the vibrating air hits a
microphone, it causes the microphone to vibrate and send out electrical
signals.