SPX to MAUD Converter

Decode Speex audio into Amiga MAUD waveform format

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Amiga Compatibility

Transform your Speex recordings into MAUD — the native audio format for Amiga computing platforms and emulators.

Browser-Based

No Amiga utilities needed on your modern PC. Convert SPX to MAUD entirely online from any web browser.

Files Stay Private

Uploaded SPX recordings are deleted immediately. MAUD outputs are automatically removed within 24 hours.

How to convert SPX 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

Speex is an open-source audio codec purpose-built for speech compression, developed by Jean-Marc Valin under the Xiph.Org Foundation. First released in October 2002, it targets voice-over-IP, conferencing, and any scenario where spoken word needs to travel efficiently over a network. SPX files wrap Speex-encoded audio inside an Ogg container, pairing the codec's speech optimization with Ogg's streaming capabilities. Three sampling rates are supported — narrowband at 8 kHz, wideband at 16 kHz, and ultra-wideband at 32 kHz — along with variable bitrate encoding that adapts in real time to speech complexity. A standout advantage is its patent-free, BSD-licensed nature, which allowed developers to embed it freely in both commercial and open-source products. Speex also bundles acoustic echo cancellation, noise suppression, and automatic gain control, features that rival codecs typically delegate to external libraries. Although its creators officially recommend Opus as a successor since 2012, Speex remains deployed in legacy VoIP systems, archived recordings, and embedded devices where its lightweight decoder footprint is still valued.
Initial release: October 15, 2002
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 SPX to MAUD?

MAUD is an Amiga-native format. Converting from SPX makes your recordings usable on Amiga systems and compatible emulators.

What is the MAUD format?

MAUD stores audio data in the IFF structure used by Commodore Amiga systems — supporting both mono and stereo audio.

What opens MAUD files?

Amiga audio software, WinUAE emulator, SOX, and specialized retro computing tools can read MAUD files.

Is MAUD compressed?

No — MAUD typically stores uncompressed PCM audio, so output files will be larger than compressed SPX sources.

Is the conversion free?

Standard SPX to MAUD conversion is free on convertio.tools.