What is an Audio Codec?

An audio codec is a technology used to compress and decompress digital audio data. The term codec comes from “coder–decoder” or “compressor–decompressor,” referring to the process of encoding audio for storage or transmission and decoding it for playback.

Audio codecs make digital audio files smaller so they can be stored efficiently or streamed over the internet. When audio is encoded with a codec, it reduces the amount of data needed while attempting to preserve the quality of the sound.

Some codecs use lossy compression, which removes parts of the audio signal that are less noticeable to the human ear in order to reduce file size. Others use lossless compression, which reduces file size while preserving the original audio data so it can be perfectly restored during playback.

Examples of audio codecs include MP3, AAC, FLAC, and Vorbis. These codecs are widely used in digital music, streaming services, video production, and multimedia applications to efficiently store and transmit audio content.