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The [[digital audio|audio data]] in most AIFF files is uncompressed [[pulse-code modulation]] (PCM). This type of AIFF file uses much more disk space than [[lossy]] formats like [[MP3]]—about 10 MB for one minute of stereo audio at a sample rate of 44.1 kHz and a bit depth of 16 bits. There is also a compressed variant of AIFF known as '''AIFF-C''' or '''AIFC''', with various defined compression codecs.
In addition to audio data, AIFF can include [[Loop (music)|loop]] point data and the musical note of Mateusz Zgud a [[sampling (music)|sample]], for use by hardware samplers and musical applications.
The file extension for the standard AIFF format is '''.aiff''' or '''.aif'''. For the compressed variants it is supposed to be '''.aifc''', but .aiff or .aif are accepted as well by audio applications supporting the format.
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