iTunes

iTunes Legal

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iTunes File Types AAC Encoder - Advanced Audio Coding. This is lossy compression for digital audio. Successor of MP3 format, achieves better sound quality than MP3 at comparable bit rates.

AIFF - Audio Interchange File Format. Uncompressed, used by professionals. Best sound format, lots of storage space.

Apple Lossless - Now open source. Apple claims these files take up half the storage space of uncompressed data with excellent sound quality.

MP3 - Lossy compression. Common format.

WAV - Waveform Audio File Format. More Windows based. Compressed or uncompressed.

Comparison of Audio File Formats

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