Audio Interchange File Format

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AIFF files exclusively store audio data. They serve as somewhat of an Apple analog of the Microsoft Wave format.

Comprehensive AIFF tag listing: http://hul.harvard.edu/jhove/aiff-hul.html

Sample Rate

The sample rate is stored as an extended precision float (80 bits, 10 bytes)

SampleRate Layout
Type Size
SignBit 1 bit.
Exponent 15 bits.
Mantissa 64 bits.
Example Sample Rates
Value Bitset
8000 0x400BFA00000000000000
44100 0x400EAC44000000000000
48000 0x400EBB80000000000000
88200 0x400FAC44000000000000
96000 0x400FBB80000000000000
192000 0x4010BB80000000000000