WMA to PVF Converter

Create Portable Voice Format from WMA audio files

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Linux Voice Gateway

PVF is the standard for Linux telephony — convert Windows WMA for cross-platform voice use.

Server Processing

No Linux tools needed locally — convert WMA to PVF online.

Quick Encoding

Voice format conversion finishes rapidly.

How to convert WMA to PVF

1

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

2

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

3

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

About formats

WMA (Windows Media Audio) is a family of proprietary audio codecs developed by Microsoft and first released in 1999 as part of the Windows Media framework. Created to compete with MP3 and AAC, WMA Standard uses perceptual coding to deliver what Microsoft claimed was near-CD quality at bitrates as low as 64 kbps — roughly half the data rate MP3 typically needed for comparable results. The codec family grew to include WMA Professional for surround sound and high-resolution audio, WMA Lossless for bit-perfect archival compression, and WMA Voice optimized for spoken content at very low bitrates. Deep integration with Windows, Windows Media Player, and the Zune ecosystem gave WMA a strong distribution advantage throughout the 2000s, and digital rights management (DRM) support made it attractive to online music stores of that era. Encoding and decoding are handled natively by Windows, requiring no third-party software for playback on any Windows machine. Cross-platform support has improved through libraries like FFmpeg and GStreamer, though WMA remains less universally compatible than MP3 or AAC on non-Microsoft devices. The format still appears in legacy media libraries, though newer codecs have largely taken its place for streaming and portable use.
Initial release: 1999
PVF (Portable Voice Format) is a simple audio file format designed for voice message storage in Linux-based telephony systems, most notably ISDN4Linux and its vbox voicemail application. The format emerged from the European ISDN ecosystem of the late 1990s, when Linux servers increasingly handled PBX and answering machine duties over digital phone lines. PVF files store raw signed 16-bit PCM samples at 8000 Hz mono, preceded by a minimal plain-text header specifying data format and byte ordering. This deliberate simplicity is one of the format's primary strengths — with no compression and a human-readable header, PVF files are trivially easy to parse, pipe, and manipulate using standard Unix tools. The 8 kHz rate matches the Nyquist requirement for telephone-bandwidth speech (300-3400 Hz), making PVF a natural intermediate format for voice processing pipelines. Another advantage is cross-architecture portability: the explicit byte-order declaration means PVF files move between big-endian and little-endian systems without ambiguity. The SoX audio toolkit provides native PVF read/write support, enabling straightforward conversion to modern formats.
Developer: ISDN4Linux Project
Initial release: 1997

Frequently Asked Questions

Why convert WMA to PVF?

PVF is the standard voice format for Linux fax and voicemail gateways like vgetty and mgetty. These telephony systems reject WMA entirely, making conversion necessary.

Which programs and systems can open PVF files?

SoX, mgetty+sendfax, vgetty, and various Linux-based telephony and fax platforms all consume PVF natively — it integrates directly into voice mail pipelines.

Is PVF suitable for music or general audio use?

PVF is purpose-built for voice telephony on Linux, not general-purpose audio. It carries raw voice data optimized for fax and voicemail, not high-fidelity music.

Does converting WMA to PVF lose audio quality?

PVF is a voice-oriented format with telephony-grade sample rates. Some quality reduction is expected, but it preserves the clarity needed for voice communication.

Can I convert a batch of WMA files to PVF simultaneously?

Absolutely — upload all your WMA voice recordings at once and convertio.tools generates individual PVF files for each, streamlining large telephony deployments.