Online SPX to CVSD, you can put the SPX to CVSD format on your computer, tablet or mobile phone without downloading any software!
Step 1
Upload SPX file
Select files from your computer, Google Drive, Dropbox, URL or by dragging them on the page.
Step 2
Select 'CVSD'
Select output CVSD or any other format as the conversion result (click the Convert button)
Step 3
Download your SPX file
After the conversion you can download your CVSD file and upload it to Google Drive, Dropbox.
spx : Speex
An SPX file is a Speex audio file saved within an Ogg Vorbis container. Speex is an open source patent-free audio format designed for speech compression. It supports variable bitrate (VBR) encoding and several features not found in other audio codecs. Some examples include embedded encoding, intensity stereo encoding, and voice activity detection.
Continuously Variable Slope Delta modulation is a voice coding method. It is a delta modulation with variable step size (adaptive delta modulation), first proposed by Greefkes and Riemens in 1970