Create AMR Files

The name of AMR audio codec comes from Adaptive Multi-Rate and it is used by 3G mobile phones to make brief voice recordings.

AMR format comes with a built-in ACELP algorithm that will compress human speech audio at great quality and these files are typically generated by recording audio from various sources.

There are numerous applications that allow users to capture sounds from their microphone or from online audio tracks, and one of the most frequent output formats is AMR.

Since AMR has become a popular format in GSM and UMTS, developers have created applications that allow users to convert their favorite audio tracks to AMR and use them as ringtones or simply enjoy them on their handsets.