SND to VOX Converter

Effortless SND to VOX audio conversion tool

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Faithful Audio

Converting SND to VOX preserves the sonic character of your original recording. Audio data is processed with precision.

Protected Files

Your SND uploads are wiped as soon as conversion finishes. All VOX results are purged automatically within 24 hours.

Cloud-Based Tool

Our cloud infrastructure handles the SND to VOX conversion workload. No local CPU or memory is consumed on your end.

How to convert SND 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

SND is a multi-platform audio file extension used across several computing ecosystems since the late 1980s. On Sun and NeXT workstations, .snd files follow the AU format structure — a header with magic number 0x2e736e64, data offset, encoding type, sample rate, and channel count, followed by raw audio. On MS-DOS PCs, the same .snd extension was used by early sound utilities like Sounder and SoundTool for simple 8-bit unsigned PCM recordings. Macintosh systems also employed .snd for sound resources embedded in the resource fork. Because the extension is shared across incompatible formats, audio processing tools typically inspect the file header to determine which variant they are handling: files beginning with the AU magic number are treated as Sun/NeXT audio, while headerless files are interpreted as raw PCM with assumed parameters. The Sun/NeXT variant supports multiple encodings including mu-law, A-law, 8-bit and 16-bit linear PCM, and ADPCM, making it versatile for both speech and general audio. One advantage of the AU-style SND is its self-describing header, which enables any compliant player to determine sample format and rate without external metadata. The MS-DOS SND variants hold historical value as artifacts of the era when Sound Blaster cards first brought digital audio to personal computers. SND files from all platforms can be processed and converted using SoX and other audio tools.
Initial release: 1988
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 SND to VOX?

SND files are too large for telephony IVR prompts. VOX uses Dialogic ADPCM for high compression of voice recordings.

How do I open VOX recordings?

Play VOX with SoX, Dialogic telephony platforms, or GoldWave audio editor.

Which devices support the SND to VOX converter?

Any device with a web browser — Windows PC, Mac, Linux, iPad, iPhone, or Android. No platform restrictions whatsoever.

Can I tweak audio parameters before conversion?

Audio settings including sample rate, channels, and encoding quality are adjustable before starting SND to VOX conversion.

Does SND to VOX conversion preserve audio quality?

Lossless target formats preserve all original audio data from your SND recording. Lossy codecs apply perceptual compression with minimal loss.

Can I convert multiple SND recordings to VOX at once?

Yes. Upload several SND files simultaneously and the batch converter will process them all to VOX in one operation.