Introduction to Digital Audio. Introduction to Sound. Sounds are vibrations that travel though the air or some other medium A sound wave is an audible vibration that travels through air or water . The loudness or intensity of a sound is measured in Decibels (dB).
1 2 3
Frequency: Number of waves to pass a point in one second. (How Fast)
Crest: Point that exhibits maximum amount of upward displacement from the rest position.
Trough: Point that exhibits maximum amount of downward displacement from the rest position.
Wavelength: Distance from crest to crest.
Amplitude: Distance from rest to crest or rest to trough.
Pitch: Quality of a sound determined by the rate of vibration. The degree of highness or lowness of a tone. (How High)
Click to View Sampling Animation
Digital Audio 101 - Bit Depth, Sampling Rate, Interpolation
Exporting: the process of saving an audio file in a format other than the format of the program it was created in.
Common Audio Formats