RA to VOX Converter

Effortless RA to VOX audio conversion online

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Data Protection

Uploaded RA files are wiped immediately once your VOX conversion finishes. Outputs are auto-deleted within 24 hours.

No Installation

The RA to VOX converter runs entirely in your web browser. No plugins, no downloads, no setup — just open and go.

Bulk Conversion

Convert an entire folder of RA recordings to VOX at once. Just upload all files and let the batch converter handle the rest.

How to convert RA to VOX

1

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

2

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

3

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

About formats

RealAudio is a proprietary audio format developed by RealNetworks and first released in 1995 as one of the earliest technologies enabling real-time audio streaming over the internet. During the dial-up era, RealAudio was genuinely revolutionary — it let users listen to audio as it downloaded rather than waiting for the entire file, a paradigm shift when a three-minute song could take 30 minutes to transfer. The format evolved through multiple codec generations: early versions used low-bitrate speech codecs for 14.4 kbps modems, while later iterations (RealAudio 10, built on AAC) delivered near-CD quality. RA files support constant and variable bitrate encoding, adaptive multi-bitrate streaming, and buffering algorithms designed to minimize playback interruptions on unreliable connections. At its peak, RealPlayer was installed on hundreds of millions of PCs, and broadcasters like the BBC and NPR relied on RealAudio for online streams. A lasting technical contribution was the adaptive bitrate streaming concept that influenced later standards like HLS and DASH. Though supplanted by modern codecs, vast archives of RA content from early web radio still exist and need conversion for playback on current devices.
Developer: RealNetworks
Initial release: April 1995
VOX is a headerless audio format built around Dialogic ADPCM encoding, widely adopted in telephony, interactive voice response (IVR) systems, and voice mail platforms since the 1980s. Each audio sample is compressed into 4 bits using an algorithm developed by Oki Electric and implemented in hardware on Dialogic Corporation's telephony interface cards. VOX files typically use a sampling rate of 6000 or 8000 Hz, producing extremely compact recordings optimized for speech intelligibility rather than musical fidelity. Because the format carries no header, playback software must know the sample rate and encoding parameters in advance — a trade-off that reduces overhead but demands careful file management. The primary advantage of VOX is storage efficiency: a one-minute voice recording at 8 kHz occupies roughly 240 KB, making it practical for systems storing thousands of prompts. Dialogic ADPCM conforms to the ITU-T G.726 standard, ensuring interoperability across telephony equipment from different vendors. Even as modern call centers migrate to IP-based systems with codecs like Opus), vast libraries of VOX recordings persist in legacy IVR deployments and compliance archives worldwide.
Initial release: 1983

Frequently Asked Questions

Why convert RA to VOX?

RealAudio is an obsolete streaming format. Converting to VOX rescues your audio from dependency on discontinued software.

What programs can open VOX?

VOX can be opened with Dialogic systems, SoX, Goldwave, telephony software. Most modern audio applications handle this format without issues.

Is the RA to VOX conversion lossless?

That depends on the VOX codec. Lossless formats keep every sample intact, while lossy ones reduce data for smaller output sizes.

Does the converter support batch RA conversion?

Absolutely. You can upload a batch of RA files and convert them all to VOX together, saving significant time on large collections.

Are my RA uploads kept private?

Yes. Uploaded RA files are deleted right after conversion, and the VOX output is removed from our servers within 24 hours automatically.