Adaptive Multi-Rate WideBand Audio
Unknownaudio
Adaptive Multi-Rate Wideband (AMR-WB) is a wideband speech audio coding standard based on Adaptive Multi-Rate encoding. AMR-WB provides a speech bandwidth of 50–7000 Hz compared to narrowband speech coders which in general offer around 300–3400 Hz. AMR-WB was developed by Nokia and VoiceAge.
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| Extensions | .awb |
|---|---|
| MIME types | audio/amr-wb |
| Signatures | 2321414d522d5742 at byte 0 (File Formats Wiki)2321414d522d57420a at byte 0 (AMR-WB) |
| PRONOM | fmt/954 |
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From Just Solve the File Format Problem (File Formats Wiki), PRONOM. Updated 2026-10-24.