{
 "id": "adaptive-multi-rate-wideband-audio",
 "name": "Adaptive Multi-Rate WideBand Audio",
 "category": "audio",
 "identifiers": {
  "extensions": [
   "awb"
  ],
  "mime": [
   "audio/amr-wb"
  ],
  "puid": [
   "fmt/954"
  ],
  "magic": [
   {
    "offset": 0,
    "hex": "2321414d522d5742",
    "notes": "File Formats Wiki"
   },
   {
    "offset": 0,
    "hex": "2321414d522d57420a",
    "notes": "AMR-WB"
   }
  ],
  "signatures": [
   {
    "name": "AMR-WB",
    "sequences": [
     {
      "position": "bof",
      "offset": 0,
      "pattern": "2321414d522d57420a"
     }
    ]
   }
  ]
 },
 "status": "unknown",
 "summary": "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.",
 "projects": [
  {
   "name": "File Formats Wiki",
   "url": "http://fileformats.archiveteam.org/wiki/Adaptive_Multi-Rate_WideBand_Audio",
   "kind": "wiki"
  },
  {
   "name": "PRONOM fmt/954",
   "url": "https://www.nationalarchives.gov.uk/PRONOM/fmt/954",
   "kind": "format-doc"
  }
 ],
 "provenance": {
  "sources": [
   "ffw",
   "pronom"
  ]
 },
 "updated": "2026-10-24",
 "aliases": [],
 "structure": [],
 "parsers": [],
 "tools": [],
 "conversions": [],
 "samples": [],
 "claims": [],
 "verification": []
}