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MTM to AMR - Online Audio Converter
Convert MTM to AMR online. Private, client-side - no uploadrequired. Batch conversion, quality presets, codec control.
Convert MTM to AMR
Drop MTM audio here or click to select
MTM
AMR (AMR-NB)
About MTM to AMR
Convert MTM to AMR. MTM (MultiTracker) sequences 32-channel DOS-era compositions. AMR encodes narrowband speech for GSM calls at 12.2 kbps and below. Tuned for voice calls, so music loses detail by design..
Why convert MTM to AMR?
- Smaller files with AMR lossy compression.
- Keep quality where supported.
- Private, no upload - runs in your browser.
MTM vs AMR
| Codec | MTM | AMR-NB |
|---|---|---|
| Compression | sequence | lossy |
| Sample behavior | Note events - no audio samples | Quality set by bitrate |
| Typical use | MTM (MultiTracker) sequences 32-channel DOS-era compositions. | AMR encodes narrowband speech for GSM calls at 12.2 kbps and below. |
When not to convert MTM to AMR
- Skip AMR for archival masters: lossy compression discards detail, so keep the MTM original.
- Keep a master copy: repeated exports stack small losses, so archive MTM before batch AMR shares.
Limits
Starting point: MTM - MTM (MultiTracker) sequences 32-channel DOS-era compositions. Old 32-channel layouts may fold down; check the mix. Tuned for voice calls, so music loses detail by design. Encode AMR (AMR-NB) from MTM 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 MTM to AMR?
Drop your MTM file onto this page, choose quality and codec settings, then click Convert. The result downloads as AMR instantly. All processing runs in your browser.
What codec is used for AMR?
The default codec for AMR is AMR-NB. 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.