What is the difference between .m4r and .nist?
- Extension
- .m4r
- .nist
- Format
- Binary
- Binary
- Category
- Audio
- Audio
- Developer
- Apple Inc.
- National Institute of Standards and Technology
- Description
- M4R is an iTunes ringtone file that stores mono channel audio. They are identical to the M4A format files only that they are correctly used for ringtones.
- SPHERE (SPeech HEader Resources) is a file format defined by NIST (National Institute of Standards and Technology) and is used with speech audio. SoX can read these files when they contain μ-law and PCM data. It will ignore any header information that says the data is compressed using shorten compression and will treat the data as either μ-law or PCM. This will allow SoX and the command line shorten program to be run together using pipes to encompasses the data and then pass the result to SoX for processing.
- MIME Type
- audio/x-m4r
- audio/x-nist
- Wikipedia
- .m4r on Wikipedia