TAK to CVS Converter

Encode TAK audio as CVS telephony format online

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Telephony Format

CVS is a voice telephony standard — converting from lossless TAK gives you clean speech audio for phone system use.

Compact Output

CVS compresses voice efficiently — converting from large lossless TAK files produces compact telephony-ready output.

Secure Processing

Uploaded TAK files are deleted immediately after conversion. CVS results are removed within 24 hours.

How to convert TAK to CVS

1

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

2

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

3

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

About formats

TAK (Tom's lossless Audio Kompressor) is a high-performance lossless audio codec created by German developer Thomas Becker, with the first public release arriving in 2007. Originally called YALAC, the project was renamed before launch and quickly earned recognition for delivering compression ratios that rival or exceed FLAC while decoding noticeably faster. TAK supports PCM audio up to 24-bit depth and 192 kHz sample rate, covering everything from CD-quality to high-resolution studio masters. One of its strongest selling points is encoding speed: even at maximum compression, TAK encodes faster than most competing lossless codecs at their default settings. The decoder is similarly efficient, making real-time playback straightforward on modest hardware. Error detection through CRC-32 checksums ensures bit-perfect integrity, important for archival purposes. TAK also supports embedded cue sheets and APEv2 tags for organizing multi-track albums. The primary trade-off is that TAK remains closed-source and Windows-only, limiting cross-platform adoption. For users who prioritize compression efficiency and speed on Windows systems, TAK stands among the best lossless options available.
Developer: Thomas Becker
Initial release: 2007
CVS is a telephony audio encoding based on Continuously Variable Slope Delta modulation, representing voice through a 1-bit delta scheme where step size adapts to track input amplitude. Developed within CCITT (now ITU-T) standards during the 1970s, CVS encodes by comparing each sample to the previous one and outputting a single bit — up or down — with slope magnitude adjusting based on recent bit patterns. This yields extremely low bit rates, typically 16 kbps at 8 kHz sampling, efficient for narrowband voice over constrained channels. CVS files store signed delta-encoded data and are commonly processed using tools like SoX. A significant advantage is bandwidth economy: the 1-bit-per-sample approach demands minimal transmission capacity, essential for military radio links and early digital telephone infrastructure. The adaptive slope mechanism also prevents overload distortion on rapidly changing signals while keeping granular noise acceptable during quiet passages. Though modern wideband codecs have superseded CVS, it retains historical importance and niche utility in legacy telephony and embedded communication devices.
Developer: CCITT / ITU-T
Initial release: 1970

Frequently Asked Questions

What is CVS audio?

CVS (Continuously Variable Slope) is an audio encoding scheme used in telephony systems for efficient voice compression.

Why convert TAK to CVS?

Certain telephony and voice processing systems require CVS-encoded audio. Lossless TAK provides clean source for voice recordings.

What processes CVS files?

SoX, telephony development platforms, and specialized voice processing tools support the CVS format.

Is CVS good for music?

No — CVS is designed for speech at telephony sample rates. It is not suitable for music content.

Is my data private?

TAK uploads are deleted immediately. CVS outputs are purged from our servers within 24 hours.