.AMR File

File extension amr is commonly used audio files saved in Adaptive Multi-Rate compressed audio.

Adaptive Multi-Rate (AMR) is an audio data compression scheme optimized for speech coding. AMR was adopted as the standard speech codec by 3GPP in October 1998 and is now widely used in GSM. It uses link adaptation to select from one of eight different bit rates based on link conditions.

AMR is also a file format for storing spoken audio using the AMR codec. Many modern mobile telephone handsets will allow you to store short recordings in the AMR format, and some commercial programs exist to convert between this and other formats such as MP3, although it should be remembered that AMR is a speech format and is unlikely to give ideal results for other audio.

MIME types:
audio/amr

Files with amr suffix can be usually found as songs or music saved in Adaptive Multi-Rate compressed audio format. Can be played in several media players, like VLC player. Also AMR format is supported by many mobile phones.

How to open:

You can use any media player such as RealPlayer or Apple QuickTime to play .amr audio file.Many mobile phones also support AMR file format.

How to convert:

Many audio converters support AMR format and can convert the files to plenty of other multimedia files, including MP3, WMA, WAV, AMR, OGG, 3GP, MP4, FLV.