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ADPCM to MTM - Online Audio Converter
Convert ADPCM to MTM online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
Convert ADPCM to MTM
Drop ADPCM audio here or click to select
ADPCM, WAV
MTM (MTM)
About ADPCM to MTM
Convert ADPCM to MTM. ADPCM predicts samples to quarter voice-band bitrates. MTM (MultiTracker) sequences 32-channel DOS-era compositions. Old 32-channel layouts may fold down; check the mix..
Why convert ADPCM to MTM?
- Tiny files with MTM note events (no audio samples).
- Keep quality where supported.
- Private, no upload - runs in your browser.
ADPCM vs MTM
| Codec | ADPCM | MTM |
|---|---|---|
| Compression | lossy | sequence |
| Sample behavior | Quality set by bitrate | Note events - no audio samples |
| Typical use | ADPCM predicts samples to quarter voice-band bitrates. | MTM (MultiTracker) sequences 32-channel DOS-era compositions. |
When not to convert ADPCM to MTM
- Skip MTM for recorded sound: it stores note events, not audio, so keep the ADPCM recording.
- Keep a master copy: repeated exports stack small losses, so archive ADPCM before batch MTM shares.
Limits
Starting point: ADPCM - ADPCM predicts samples to quarter voice-band bitrates. Variants differ by vendor, so confirm the flavor before converting. Old 32-channel layouts may fold down; check the mix. Encode MTM (MTM) from ADPCM at 256k for music or 128k for speech, starting from the master.
How conversion works
Conversion runs entirely in your browser with FFmpeg WASM. Files never leave your device.
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FAQ
How do I convert ADPCM to MTM?
Drop your ADPCM file onto this page, choose quality and codec settings, then click Convert. The result downloads as MTM instantly. All processing runs in your browser.
What codec is used for MTM?
The default codec for MTM is MTM. You can change audio parameters in Advanced mode.
How do you store my files?
We do not store any processed audio. All conversion happens entirely in your browser using FFmpeg WASM.