SPH to VOX Converter
Convert your sph files to vox online & free
How to convert sph to vox
Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.
Choose "to vox"
Choose vox or any other format you need as a result (more than 200 formats supported)
Download your vox
Let the file convert and you can download your vox file right afterwards
SPeech HEader Resources
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.
A headerless file of Dialogic/OKI ADPCM audio data
A headerless file of Dialogic/OKI ADPCM audio data commonly comes with the extension .vox. This ADPCM data has 12-bit precision packed into only 4-bits.