SPH to MAUD Converter

Smooth SPH to MAUD transcoding in your browser

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Confidential Handling

Your SPH audio is deleted as soon as the conversion ends. The MAUD output is automatically purged within 24 hours.

Accurate Conversion

Expect high-fidelity SPH to MAUD results. The converter processes audio data carefully to deliver accurate, distortion-free output.

Quick Delivery

Rapid SPH to MAUD processing. Upload your SPHERE recording and have the converted output ready almost immediately.

How to convert SPH to MAUD

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

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

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

About formats

SPH is the file extension for audio stored in the NIST SPHERE (SPeech HEader REsources) format, a standard created by the U.S. National Institute of Standards and Technology around 1990. Built for speech research, SPH files carry a 1024-byte ASCII header packed with metadata — database identifiers, channel counts, sample rates, byte ordering, and compression type — making every recording self-describing. The underlying audio is typically 16-bit linear PCM sampled at 16 kHz, though other configurations are permitted. Researchers at NIST, DARPA, and universities worldwide rely on SPH for distributing speech corpora such as TIMIT, Switchboard, and the LDC collections that underpin modern automatic speech recognition systems. A key advantage is that the human-readable header lets scripts parse recording metadata without binary decoding. The format's strict standardization also eliminates ambiguity when sharing datasets across institutions and platforms. Because SPH files store uncompressed PCM, they preserve full audio fidelity — critical when training acoustic models where even small artifacts can skew results.

Developer: National Institute of Standards and Technology

Initial release: 1990

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.

Developer: MacroSystem Computer GmbH

Initial release: 1992

Frequently Asked Questions

Why convert SPH to MAUD?

SPH is unknown on Amiga computing platforms. MAUD is the native Amiga audio format for retro computing and sound preservation.

What can open MAUD audio?

Open MAUD with Amiga audio tools, SoX, or Audacity with MAUD import capability.

How quickly does SPH to MAUD conversion finish?

Most SPH files convert to MAUD within seconds. The cloud processing pipeline is optimized for fast audio transcoding.

What devices can I use for SPH to MAUD conversion?

Any device with a browser — Windows, macOS, Linux, ChromeOS, iOS, Android. The tool has no operating system requirements.

Can I change audio settings before converting SPH to MAUD?

Yes — you can modify sample rate, bit depth, and channel settings before starting the SPH to MAUD conversion.

Is SPH to MAUD conversion lossless?

When the target is a lossless format, all audio data from your SPH recording is preserved. Lossy targets apply perceptual compression.

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Specific converters

MP3 to MAUD

MP4 to MAUD

WAV to MAUD

FLAC to MAUD

M4A to MAUD

SMP to MAUD

MPG to MAUD

MOV to MAUD

AVI to MAUD

ASF to MAUD

APE to MAUD

WMV to MAUD

3G2 to MAUD

3GP to MAUD

AAF to MAUD

AV1 to MAUD

AVCHD to MAUD

CAVS to MAUD

DIVX to MAUD

DV to MAUD

F4V to MAUD

FLV to MAUD

HEVC to MAUD

M2TS to MAUD

M2V to MAUD

M4V to MAUD

MJPEG to MAUD

MKV to MAUD

MOD to MAUD

MPEG to MAUD