Audio Interchange File Format (AIFF) is a audio file format standard used for storing Sound data on personal computers. The format was co-developed by Apple Computer based on Electronic Arts Interchange File Format (IFF) and is most commonly used on Apple Macintosh computer systems. AIFF is also used by Silicon Graphics.

The audio data in an AIFF file is uncompressed big-endian pulse-code modulation (PCM) so the files tend to be much larger than files that use lossless or audio data compression formats such as Monkey s Audio and MP3. The AIFF-Compressed (AIFF-C or AIFC) format supports compression ratios as high as 6:1.

An AIFF file is divided into a number of chunks. Each chunk is identified by a chunk ID known as a OSType.

Types of chunks found in AIFF files:

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