AIFF-C Common Compression Types
AIFF supports only uncompressed PCM data. AIFF-C also supports compression audio formats, that can be specified in the "COMM" chunk. The compression type is "NONE" for PCM audio data. The compression type is accompanied by a printable name. Common compression types and names include, but are not limited to:
| Compression Type | Compression Name | Data | Source |
|---|---|---|---|
| NONE | not compressed | PCM, big-endian | Apple, Inc. |
| sowt | not compressed | PCM, little-endian | Apple, Inc. |
| fl32 | 32-bit floating point | IEEE 32-bit float | Apple, Inc. |
| fl64 | 64-bit floating point | IEEE 64-bit float | Apple, Inc. |
| alaw | ALaw 2:1 | 8-bit ITU-T G.711 A-law | Apple, Inc. |
| ulaw | µLaw 2:1 | 8-bit ITU-T G.711 µ-law | Apple, Inc. |
| ALAW | CCITT G.711 A-law | 8-bit ITU-T G.711 A-law (64 kbit/s) | SGI |
| ULAW | CCITT G.711 u-law | 8-bit ITU-T G.711 µ-law (64 kbit/s) | SGI |
| FL32 | Float 32 | IEEE 32-bit float | SoundHack & Csound |
| ADP4 | 4:1 Intel/DVI ADPCM | SoundHack | |
| ima4 | IMA 4:1 | ||
| ACE2 | ACE 2-to-1 | Apple IIGS ACE (Audio Compression/Expansion) | |
| ACE8 | ACE 8-to-3 | ||
| DWVW | Delta With Variable Word Width | TX16W Typhoon | |
| MAC3 | MACE 3-to-1 | Apple, Inc. | |
| MAC6 | MACE 6-to-1 | Apple, Inc. | |
| Qclp | Qualcomm PureVoice | Qualcomm | |
| QDMC | QDesign Music | QDesign | |
| rt24 | RT24 50:1 | Voxware | |
| rt29 | RT29 50:1 | Voxware |
Read more about this topic: Audio Interchange File Format
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