.AMR File Description

Compressed audio format developed by Ericsson; used by many 3G cell phones for voice recordings such as MMS messages; incorporates the Algebraic Code Excited Linear Prediction (ACELP) algorithm, which is designed to efficiently compress human speech audio.

Other Information For .AMR File Extension

• Company:

  N/A

• File Type:

  Adaptive Multi-Rate ACELP Codec File

• Identifying Characters (Hex):

  23 21 41 4D 52 0A 34

• Identifying Characters (ASCII):

  #!AMR...4