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.AMR File Extension

File TypeAdaptive Multi-Rate Codec File

3.7 (211 Votes)
CategoryAudio Files


This file is saved in a binary format, which requires a specific program to read its contents.

What is an AMR file?

An AMR file is an audio file saved in a compressed audio format developed by Ericsson. It is used by many 3G cell phones for voice recordings such as MMS messages. AMR files incorporate the Algebraic Code Excited Linear Prediction (ACELP) algorithm, which is designed to efficiently compress human speech audio.

More Information

NOTE: AMR files may be saved in either the AMR-NB (Narrowband) or AMR-WB (Wideband) format. Wideband audio supports a broader frequency range and therefore provides better sound quality.

Open and view .AMR files with File Viewer Plus.
Programs that open AMR files
Updated 12/13/2018

About AMR Files

Our goal is to help you understand what a file with a *.amr suffix is and how to open it.

The Adaptive Multi-Rate Codec file type, file format description, and Mac, Windows, and Linux programs listed on this page have been individually researched and verified by the FileInfo team. We strive for 100% accuracy and only publish information about file formats that we have tested and validated.

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