- Extension
- .sph
- .caf
- Format
- Binary
- Binary
- Category
- Audio
- Audio
- Developer
- NIST
- Apple
- Description
- Waveform audio file created in the NIST SPHERE format, which is often used in speech recognition research; often contains a recording of a person speaking; can be provided as input to speech recognition systems.
- Digital audio format based on Apple's Core Audio technology; stores audio data as well as text annotations, markers, channel layouts, and other information; similar to an .AIFF or .WAVE file, but does not have a 4GB size limit and can store any number of audio channels.
- MIME Type
- audio/x-nist-sph
- audio/x-caf
