Need compander program

[Autodave]

I record the worship services at my church and I am looking for a compander (compressor / expander) program. It can either be a stand-alone program or come with a program for recording audio.

Anyone know of such a program?

[mastablasta]

you can use for example audacity and then save as mp3 file format.

otherwise compressing as tar.gz or 7zip can be done with default compressor.

[Autodave]

you can use for example audacity and then save as mp3 file format.

otherwise compressing as tar.gz or 7zip can be done with default compressor.

No, I am not speaking about a file compression program. A compander is a device (used to be a separate component) that is used when reording a live performance. Radio and TV stations also use them. It takes the incoming audio signal and either softens or raises the volume level to keep it at a specific level. I see now that there is software to do this on a PC rather than have a seperate component. I am looking for the software to do this through Linux: even if it is a pay program.

[Yellow Pasque]

http://sox.sourceforge.net/sox.html#EFFECTS

EDIT: ffmpeg project also recently added compand as a filter (version 2.1), but it would take some work to get that in your current install. Try SoX first, as that's readily available. http://ffmpeg.org/ffmpeg-filters.html#compand

[FakeOutdoorsman]

...but it would take some work to get that in your current install.

Can be done in three commands (including the actual ffmpeg command).

wget http://ffmpeg.gusari.org/static/32bit/ffmpeg.static.32bit.2013-10-25.tar.gz
tar xzvf ffmpeg.static.32bit.2013-10-25.tar.gz
./ffmpeg -i input -af compand output

The lazy can try*:

wget http://ffmpeg.gusari.org/static/32bit/ffmpeg.static.32bit.$(date +"%F").tar.gz

* Not working now since there are no builds for today, but it appears to be a temporary issue.

Or you can follow a step-by-step guide to compile FFmpeg on Ubuntu (probably what Temüjin was referring to).