FLAC to CVU Converter
Create unfiltered CVSD audio from lossless FLAC
Lossless Source
FLAC gives the CVU encoder perfect audio — optimal for voice codec testing and development.
Raw Modulation Data
CVU provides unfiltered CVSD — useful for R&D from pristine FLAC input.
Online Encoding
No codec toolkit needed — convert FLAC to CVU in your browser.
How to convert FLAC to CVU
Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.
Choose cvu or any other format you need as a result (more than 200 formats supported)
Let the file convert and you can download your cvu file right afterwards
About formats
Frequently Asked Questions
CVU is unfiltered CVSD — used in codec development and testing. FLAC provides the cleanest possible source.
Telephony development tools, SoX, and voice codec testing frameworks consume CVU data.
CVU skips the smoothing filter — providing raw delta modulation data for analysis.
Direct playback sounds harsh — CVU is primarily for development and analysis purposes.
Upload multiple FLAC files and encode them all to CVU at once.