File formats and Audio Codecs A Digital Audio Signal is created from by an Analog to Digital Converter Digital Signature is turned into a format to be played. CODEC Compression and de-compression
Lossy
wma mp3 () aac (higher quality lower bitrate) ogg vorbis
easy to download on device
FLAC
- .flac
Apple Lossless
- .alac
Lossless
- WAV (Only Minimal Metadata)
- AIFF
Metadata & Tags
Information about the songs in the audio file.
- Artist
- Album
- Genre
- Mood
- BPM
- Description
- Tags
- Links
All original data with smaller file sizes more effeciently store redundant data can store only difference. can compress more than ‘zip’ takes 1/2 less space than uncompressed.
- .flac
- .alac (Apple Music/iTunes)