.AMR File Extension

Adaptive Multi-Rate Codec File

The AMR file extension is a compressed audio format widely used in mobile telephony. These files are used for voice optimization. AMR files efficiently compress speech audio for VoIP applications. A...

General Information

Title AMR File Extension
Extension .amr
Full Form Adaptive Multi-Rate Codec File
File Type Audio File
Developer 3GPP
MIME Type audio/amr

File Function

Primary Function Audio compression
Additional Functions Speech encoding
Features Variable bitrate, Multi-rate

File Characteristics

Quality Low to medium
Supports Layers No
Supports Transparency No
Editable Yes, with software

Use Cases

Voice Recording Yes
Audio Messaging Yes
Telecommunication Yes

Security and Practices

Security Risks Low
Best Practices Regular updates, Trusted sources

Historical/Version Information

Initial Release 1999
Latest Version AMR-WB+, 2012

Associated Types

Similar Extensions .amr-wb, .3ga, .aac, .mp3

Software Compatibility

Software Usage Policy OS Compatibility
VLC Media Player Free Windows, Mac, Linux
QuickTime Player Free Mac
Audacity Free Windows, Mac, Linux