- Apple’s native container for uncompressed or compressed audio
- Handles very short sounds extremely well
- No 4GB file limit (unlike WAV)
- Works flawlessly with AVAudioPlayer, SKAction.playSoundFileNamed, and AudioToolbox
To convert a WAV file into a CAF file using linear‑PCM, little‑endian, 16‑bit audio
afconvert -f caff -d LEI16 early_exit.wav early_exit.caf