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Thread: Need compander program

  1. #1
    Join Date
    Sep 2009
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    322

    Need compander program

    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?

  2. #2
    Join Date
    Nov 2009
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    Hidden!
    Distro
    Kubuntu 14.04 Trusty Tahr

    Re: Need compander program

    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.
    Easy to understand Ubuntu manual with lots of pics: http://ubuntu-manual.org/
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  3. #3
    Join Date
    Sep 2009
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    322

    Re: Need compander program

    Quote Originally Posted by mastablasta View Post
    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.

  4. #4
    Join Date
    Jun 2007
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    10,914

    Re: Need compander program

    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
    Last edited by Temüjin; October 28th, 2013 at 10:38 AM.

  5. #5
    Join Date
    Sep 2006
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    3,470

    Re: Need compander program

    Quote Originally Posted by Temüjin View Post
    ...but it would take some work to get that in your current install.
    Can be done in three commands (including the actual ffmpeg command).
    Code:
    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*:
    Code:
    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).
    Last edited by FakeOutdoorsman; October 28th, 2013 at 06:59 PM.

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