VOX to MAUD Converter

Convert Dialogic VOX telephony audio to Amiga MAUD

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Telephony to Amiga

An unusual but functional bridge — move Dialogic telephony audio into the Amiga MAUD ecosystem for retro projects.

16-Bit Quality

MAUD stores 16-bit audio. Your decoded VOX data gets the full bit depth the Amiga audio system supports.

Web Conversion

No Amiga emulator or SoX needed. Convert VOX to MAUD directly online.

How to convert VOX to MAUD

1

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

2

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

3

Let the file convert and you can download your maud 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
MAUD is an audio file format developed by MacroSystem for the Commodore Amiga platform, introduced in the early 1990s as part of their digital video and audio production tools. Built on the Amiga IFF (Interchange File Format) chunk architecture, MAUD files organize data into clearly delineated chunks — MHDR for the header, MDAT for sample data, and optional annotation chunks for metadata. The format supports mono and stereo layouts with bit depths of 8 or 16 bits and sample rates up to 48 kHz, which represented professional-grade specifications on Amiga hardware. Both signed linear PCM and A-law/mu-law encodings are available, offering a choice between fidelity and file size. MAUD saw primary use in the Amiga video production community, where MacroSystem Retina and VLab Motion boards demanded synchronized audio that the standard 8SVX format could not deliver. Conversion support exists today through SoX and libsndfile, ensuring vintage Amiga productions remain recoverable. Three distinct advantages stand out: clean IFF-based structure that any chunk-aware parser can navigate, 16-bit stereo capability ahead of typical Amiga audio, and lightweight overhead that left maximum CPU headroom for video rendering.
Initial release: 1992

Frequently Asked Questions

Why convert VOX to MAUD?

MAUD is the 16-bit audio format of the Amiga. Converting VOX brings telephony audio into the Amiga retro computing ecosystem.

What can open MAUD files?

Amiga emulators (WinUAE, FS-UAE) and SoX handle MAUD files on modern systems.

Is MAUD better than 8SVX?

MAUD supports 16-bit samples vs 8SVX 8-bit. MAUD provides higher fidelity on the Amiga.

Can I batch convert?

Yes. Upload multiple VOX files and produce MAUD versions simultaneously.

Is this conversion common?

VOX to MAUD is unusual — but for retro computing projects mixing telephony and Amiga audio, it serves a specific need.