What is FLAC?
Also called: Free Lossless Audio Codec
FLAC (Free Lossless Audio Codec) is an audio format that compresses audio without losing any quality, so a decoded FLAC file is bit for bit identical to the original. Files are smaller than WAV but larger than MP3.
FLAC works like a zip file made for audio: it finds patterns in the waveform and stores them efficiently. How much space it saves depends on the music; quiet, simple material compresses more than dense, noisy mixes.
It is popular for music libraries, downloads and archiving because it keeps full quality and supports metadata tags and cover art. Many distributors accept FLAC as an alternative to WAV.
Converting a FLAC to WAV and back loses nothing. Converting an MP3 to FLAC, however, does not restore what the MP3 discarded.
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