Adaptive Multi-Rate Audio
From Just Solve the File Format Problem
(Difference between revisions)
(Created page with "{{FormatInfo |formattype=electronic |subcat=Audio and Music |extensions={{ext|amr}} |wikidata={{wikidata|Q4676210}} |locfdd={{LoCFDD|fdd000254}} |mimetype={{mimetype|audio/amr...") |
(→Sample Files) |
||
| Line 18: | Line 18: | ||
* [https://www.online-convert.com/file-format/amr AMR info and sample] | * [https://www.online-convert.com/file-format/amr AMR info and sample] | ||
* [https://gerrit.pixelexperience.org/plugins/gitiles/frameworks_base/+/a539807a7c50948eec99b27e2d4d05da208ae3f1/media/tests/contents/media_api/music/test_amr_ietf.amr Sample AMR] | * [https://gerrit.pixelexperience.org/plugins/gitiles/frameworks_base/+/a539807a7c50948eec99b27e2d4d05da208ae3f1/media/tests/contents/media_api/music/test_amr_ietf.amr Sample AMR] | ||
| + | * https://telparia.com/fileFormatSamples/audio/amr/ | ||
== References == | == References == | ||
<references/> | <references/> | ||
Revision as of 22:09, 30 April 2022
Adaptive Multi-Rate Audio is a narrowband audio compression format optimized for speech. AMR is a codec adopted by 3GPP and used by many mobile systems.[1][2][3] Apple iOS used the format for voice recordings and voicemail, but changed to the CAF in iOS 12.2[4]
See also AMR-WB
File Identification
The first 5 bytes of an AMR is the hex values 2321414D52 or ascii #!AMR
