VOX to WVE Converter

Convert Dialogic VOX telephony audio to Psion WVE

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IVR to PDA

Bridge Dialogic telephony and Psion PDA audio — two 1990s technologies connected.

Vintage PDA Sound

WVE is the sound of Psion organizers. Your VOX recordings enter the world of British-designed PDAs.

Online Conversion

No PsiWin or SoX needed. Convert VOX to WVE in the browser.

How to convert VOX to WVE

1

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

2

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

3

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

About formats

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
WVE is the audio format native to the Psion Series 3 family of personal digital assistants, released by British company Psion PLC beginning in September 1991. These clamshell PDAs included a built-in voice recorder, and all dictation functionality relied on WVE files to store captured sound. Each file begins with the ASCII signature "ALawSoundFile**" followed by a minimal header, then raw A-law encoded audio sampled at 8 kHz — a rate inherited from digital telephony standards. At 8000 bytes per second, a one-minute recording occupies just 480 KB, which was essential given that Psion devices stored data on SRAM cards typically ranging from 128 KB to 2 MB. The A-law encoding provides reasonable speech clarity within these tight storage constraints, prioritizing intelligibility over high-fidelity reproduction. WVE files can be converted to WAV or other modern formats using SoX, Awave Studio, or specialized Psion file utilities. While the format is firmly a product of early-1990s handheld computing, it holds historical significance as one of the first audio recording formats designed for pocket-sized consumer devices. Collectors and researchers studying mobile computing history occasionally encounter WVE files when recovering data from legacy SRAM media.
Developer: Psion PLC
Initial release: 1991

Frequently Asked Questions

Why convert VOX to WVE?

WVE is the native audio format of Psion PDAs. Converting Dialogic VOX telephony recordings to WVE makes them playable on vintage Psion handheld devices.

How do I open WVE files?

Psion Series 3, 5, and Revo play WVE natively. On modern computers, SoX decodes WVE, and PsiWin transfers files between PC and Psion hardware.

VOX and WVE are both voice formats — how do they differ?

VOX uses OKI ADPCM for Dialogic IVR systems; WVE uses A-law for Psion PDA audio. Different codecs built for completely different device ecosystems.

Is VOX to WVE conversion free?

Yes — standard VOX to WVE conversions are free at convertio.co. Premium plans provide higher limits and priority processing for large legacy audio collections.

Are my VOX files kept after conversion?

No. VOX uploads are permanently deleted the moment conversion finishes. WVE output is automatically removed within 24 hours to safeguard your audio data.