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ADPCM to UMX - Online Audio Converter
Convert ADPCM to UMX online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
Convert ADPCM to UMX
Drop ADPCM audio here or click to select
ADPCM, WAV
UMX (UMX)
About ADPCM to UMX
Convert ADPCM to UMX. ADPCM predicts samples to quarter voice-band bitrates. UMX wraps tracker music for Unreal-engine game levels. Game containers may bundle several songs; convert each separately..
Why convert ADPCM to UMX?
- Tiny files with UMX note events (no audio samples).
- Keep quality where supported.
- Private, no upload - runs in your browser.
ADPCM vs UMX
| Codec | ADPCM | UMX |
|---|---|---|
| Compression | lossy | sequence |
| Sample behavior | Quality set by bitrate | Note events - no audio samples |
| Typical use | ADPCM predicts samples to quarter voice-band bitrates. | UMX wraps tracker music for Unreal-engine game levels. |
When not to convert ADPCM to UMX
- Skip UMX 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 UMX shares.
Limits
Starting point: ADPCM - ADPCM predicts samples to quarter voice-band bitrates. Variants differ by vendor, so confirm the flavor before converting. Game containers may bundle several songs; convert each separately. Encode UMX (UMX) 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 UMX?
Drop your ADPCM file onto this page, choose quality and codec settings, then click Convert. The result downloads as UMX instantly. All processing runs in your browser.
What codec is used for UMX?
The default codec for UMX is UMX. 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.