encoder
In digital audio technology, an encoder is a program that converts an audio WAV file into an
MP3
file, a highly-compressed sound file that preserves the quality of a CD recording. (The program
that gets the sound selection from a CD and stores it as a WAV file on a hard drive is called a
ripper.) An MP3
encoder compresses the WAV file so that it is about one-twelfth the size of the original digital
sound file. The quality is maintained by an algorithm that optimizes for audio perception, losing
data that will not contribute to perception. The program that plays the MP3 file is called a
player. Some audio products provide all three programs together as a package.
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