Tag Info

What are you recording? I guess you are talking about the material you were referring to in your previous questions. If so, then you can't really improve the quality. To be more general: You can't improve the objective quality of a recording after it is done. You could improve: The microphone used for recording The signal chain altogether (cables, ...

The Debian version of ffmpeg is stripped of some encoding codecs because of legal issues. Debian has the aim to be totally free so that no company can sue you because you used software/code you didn't pay for. There is the repository debian-multimedia.org which offers packages with an unstripped ffmpeg, the problem is that when you include this repository ...

You could use either a dedicated media converter program (like this one), or a general purpose audio editor like Audacity. If you go for Audacity, make sure to also get the LAME encoder (to be able to export to MP3 format) and the FFmpeg library (to be able to read AMR files).

Audacity 1.3 beta supports amr files if you install the optional FFmpeg library. It should be able to do all the things you ask for. The amr support was added in the Audacity 1.3.8 release. You can find info about that about half way down the bottom of the page.