Information About

Aiff




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 Compression (such as FLAC ) or Lossy Compression formats such as Vorbis and MP3 . Uncompressed AIFF files at Compact-disc Settings (44.1Ksamples/sec, 16 bits, 2 channels) thus have a bitrate of 1411.2 kbits/sec. 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:
  • Common Chunk (required)

  • Sound Data Chunk (required)

  • Marker Chunk

  • Instrument Chunk

  • Comment Chunk

  • Name Chunk

  • Author Chunk

  • Copyright Chunk

  • Annotation Chunk

  • Audio Recording Chunk

  • MIDI Data Chunk

  • Application Chunk



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