The Core Audio Format is a

container format A container format (informally, sometimes called a wrapper) or metafile is a file format that allows multiple data streams to be embedded into a single file, usually along with metadata for identifying and further detailing those streams. Nota ...

for storing audio, developed by

Apple Inc. Apple Inc. is an American multinational corporation and technology company headquartered in Cupertino, California, in Silicon Valley. It is best known for its consumer electronics, software, and services. Founded in 1976 as Apple Comput ...

It is compatible with

Mac OS X 10.4 Mac OS X Tiger (version 10.4) is the 5th major release of macOS, Apple's desktop and server operating system for Mac computers. Tiger was released to the public on April 29, 2005, for US$129.95 as the successor to Mac OS X 10.3 Panther. Incl ...

and higher; Mac OS X 10.3 needs

QuickTime QuickTime (or QuickTime Player) is an extensible multimedia architecture created by Apple, which supports playing, streaming, encoding, and transcoding a variety of digital media formats. The term ''QuickTime'' also refers to the QuickTime Pla ...

7 to be installed. Core Audio Format is designed to overcome limitations of older digital audio formats, including

AIFF AIFF may refer to: * Audio Interchange File Format * All India Football Federation, the national governing body of Association football in India Film festivals * Addis International Film Festival, Addis Ababa, Ethiopia * Alexandria Internation ...

and WAV. Just like the QuickTime .mov container, a .caf container can contain many different audio formats, metadata tracks, and much more data. Like the RF64, it is not limited to a 4 GB file size and a single .caf file can theoretically save hundreds of years of recorded audio due to its use of 64-bit file offsets.

GarageBand GarageBand is a software application by Apple Inc., Apple for macOS, iPadOS, and iOS devices that allows users to create music or Podcast, podcasts. It is a lighter, amateur-oriented offshoot of Logic Pro. GarageBand was originally released for ...

, Soundtrack Pro, and

Logic Studio Logic Studio is a discontinued professional music production suite by Apple Inc. The first version of Logic Studio was unveiled on September 12, 2007. It claims to be the largest collection of modeled instruments, sampler instruments, effect pl ...

use the .caf format for their loop and sound effects library, particularly for surround-sound audio compressed with the

Apple Lossless The Apple Lossless Audio Codec (ALAC, ), also known as Apple Lossless, or Apple Lossless Encoder (ALE), is an audio coding format, and its reference audio codec implementation, developed by Apple Inc., Apple for lossless data compression of digit ...

(ALAC) codec. It is also what is used to send Audio Messages over

iMessage iMessage is an instant messaging service developed by Apple Inc. and launched in 2011. iMessage functions exclusively on Apple platforms – including iOS, iPadOS, macOS, watchOS, and visionOS – as part of Apple ecosystem, Apple's approach t ...

iOS Ios, Io or Nio (, ; ; locally Nios, Νιός) is a Greek island in the Cyclades group in the Aegean Sea. Ios is a hilly island with cliffs down to the sea on most sides. It is situated halfway between Naxos and Santorini. It is about long an ...

and

macOS macOS, previously OS X and originally Mac OS X, is a Unix, Unix-based operating system developed and marketed by Apple Inc., Apple since 2001. It is the current operating system for Apple's Mac (computer), Mac computers. With ...

References

External links

Apple Core Audio Format Specification 1.0
Computer-related introductions in 2005 Apple Inc. software Audio file formats Digital container formats {{computing-stub