M4A to NIST Converter
Convert your m4a files to nist online & free
How to convert m4a to nist
Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.
Choose "to nist"
Choose nist or any other format you need as a result (more than 200 formats supported)
Download your nist
Let the file convert and you can download your nist file right afterwards
Compressed Audio File
This is a lossless-format (and encoding algorithm) for Apple platforms. M4A is widely used in iPod players and as a component in QuickTime media-players. The m4a codecs decoder is found in open sources - this allows third party users to open files in that format.
NIST (National Institute of Standards and Technology)
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.