WMA to CVSD Converter
Produce filtered CVSD delta modulation from WMA
Military Voice Codec
CVSD is the standard for military voice — convert Windows WMA for specialized systems.
Secure Processing
WMA uploads are deleted after conversion and CVSD results purged within 24 hours.
Online Encoding
No military codec tools needed — convert WMA to CVSD in your browser.
How to convert WMA to CVSD
Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.
Choose cvsd or any other format you need as a result (more than 200 formats supported)
Let the file convert and you can download your cvsd file right afterwards
About formats
Frequently Asked Questions
CVSD adds output smoothing on top of standard CVS delta modulation, improving speech clarity in military radios and telephony. WMA is incompatible with these platforms, making conversion essential.
Military voice radios, secure telephony terminals, legacy PBX systems, and SoX on desktop platforms all work with CVSD. The format is built for robust speech transmission in noisy channels.
CVSD applies a low-pass output filter that smooths the reconstructed waveform, resulting in better speech intelligibility than raw CVS. Both use delta modulation but CVSD sounds cleaner.
No — CVSD is engineered solely for speech at low bitrates. Music, sound effects, and ambient recordings lose nearly all fidelity when encoded to this format.
Yes — upload multiple WMA recordings and Convertio encodes each to CVSD in parallel. Download results individually or as a single combined archive when processing completes.