Free Online VMS to SPH Converter
Convert VMS files to SPH online for free
VMS
ke
SPH
VMS
VMS
Used in Germany to compress speech audio for voice mail. A self-describing variant of cvsd (Continuously Variable Slope Delta modulation).
SPH
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.
How to Convert VMS to SPH

Step 1: Upload Files
Click the upload button or drag and drop your files into the upload area. We support various file formats for conversion.

Step 2: Select Format
Choose your desired output format from the available options. The conversion will be automatically configured for optimal results.

Step 3: Download
Once the conversion is complete, your converted files will be ready for download. Click the download button to save your files.