CDDA to DVMS Converter

Convert CD audio to DVMS voice message format online

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Voicemail Ready

Convert CDDA audio to DVMS — the voice message format designed for enterprise voicemail platforms and telephony storage.

Private Processing

Uploaded CDDA files are deleted after conversion. DVMS outputs are purged from our servers within 24 hours automatically.

Browser-Based

No telephony software to install. Convert CDDA to DVMS directly in your web browser from any operating system.

How to convert CDDA to DVMS

1

Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.

2

Choose dvms or any other format you need as a result (more than 200 formats supported)

3

Let the file convert and you can download your dvms file right afterwards

About formats

CDDA (Compact Disc Digital Audio), known as the Red Book standard, defines audio stored on music CDs. Jointly developed by Sony and Philips and published in 1980, it established parameters that shaped digital audio for decades: 16-bit linear PCM at 44.1 kHz stereo, yielding 1,411.2 kbps uncompressed. Each disc holds up to 80 minutes organized into tracks with index points, sub-channel data for text display, and error correction codes (CIRC) ensuring reliable playback despite minor scratches. When audio is ripped from a CD, the resulting stream is often saved with the .cdda extension as raw PCM before conversion. The most obvious advantage is uncompressed, lossless nature — what reaches your ears is mathematically identical to the studio master at the specified resolution. Robust error correction provides excellent resilience, maintaining audio integrity even when disc surfaces suffer moderate wear. Having sold billions of units since the first commercial release in 1982, CDDA established baseline quality expectations for digital music and remains the reference against which compressed codecs are measured.
Developer: Sony / Philips
Initial release: October 1980
DVMS (Dutch Voice Messaging System) is a telephony-grade audio encoding born from the Netherlands' early push toward digital voicemail infrastructure. Deployed through KPN (formerly PTT Telecom) in the mid-1980s, the format stores mono voice data at a narrow 8 kHz sample rate, prioritizing compact message size over sonic breadth. Audio is compressed with a proprietary variant of logarithmic companding similar to European A-law encoding, squeezing recordings to roughly 8 kbit/s while keeping speech intelligible. Each file carries a small header identifying sample rate, compression type, and message metadata, which made automated routing across early PBX and voicemail systems straightforward. Although DVMS never gained traction outside Dutch telecom circles, it influenced how European carriers designed later voice messaging protocols. Tools like SoX and several legacy telephony libraries still read and write DVMS files, allowing archival playback of decades-old messages. Among its practical advantages: extremely small file sizes (a one-minute message occupies roughly 60 KB), reliable speech clarity despite aggressive compression, and a simple container layout that is easy to parse programmatically.
Developer: Dutch PTT Telecom
Initial release: 1984

Frequently Asked Questions

Why convert CDDA to DVMS?

DVMS is a voice message format used in voicemail and telephony message storage systems. CDDA provides pristine source quality for encoding.

What systems use DVMS?

DVMS files are used by certain enterprise voicemail platforms and digital voice messaging systems for storing voice recordings.

Is DVMS suitable for music?

No — DVMS is designed for speech encoding. It prioritizes voice clarity and compact storage over musical fidelity.

How small are DVMS files?

DVMS compresses voice data significantly compared to raw PCM. A minute of speech occupies much less space than the CDDA original.

Can I batch convert?

Upload multiple CDDA files and convert them all to DVMS at once — efficient for preparing voicemail greetings or message archives.