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Thread: For all you Audiophiles, need help making script to combine Stereo chans then export

  1. #1
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    Question For all you Audiophiles, need help making script to combine Stereo chans then export

    I've recently had an issue where some of my music will have split audio channels - eg: one part only comes through one part of the speaker - the other comes through the other, I want to make script that can merge both stereo channels and then export the file with the same settings that were used in the original rip - leaving it almost untouched.

    Perhaps even a Normalize command too due to the loss of volume from combining the 2 channels.

    I'm open for help.

  2. #2
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    Re: For all you Audiophiles, need help making script to combine Stereo chans then exp

    sox should do it easy and beautiful


    Code:
    sudo apt-get install sox


    Code:
    sox originalfile.flac -c1  monofile.flac

    see here


    mediainfo rain.flac
    General
    Complete name : rain.flac
    Format : FLAC
    Format/Info : Free Lossless Audio Codec
    File size : 61.9 MiB
    Duration : 5mn 21s
    Overall bit rate mode : Variable
    Overall bit rate : 1 614 Kbps
    Track name : Chuva no Minha Janela [rain on my window]
    Performer : Chuva LLuvia
    Recorded date : Timeless
    Comment : Processed by SoX

    Audio
    Format : FLAC
    Format/Info : Free Lossless Audio Codec
    Duration : 5mn 21s
    Bit rate mode : Variable
    Bit rate : 1 614 Kbps
    Channel(s) : 2 channels
    Sampling rate : 48.0 KHz
    Bit depth : 24 bits
    Stream size : 61.9 MiB (100%)
    Writing library : libFLAC 1.2.1 (UTC 2007-09-17)


    shantiq@shantiq-00000000000000000000000:~$ sox rain.flac -c1 monofile.flac
    shantiq@shantiq-00000000000000000000000:~$ mediainfo monofile.flac
    General
    Complete name : monofile.flac
    Format : FLAC
    Format/Info : Free Lossless Audio Codec
    File size : 31.0 MiB
    Duration : 5mn 21s
    Overall bit rate mode : Variable
    Overall bit rate : 809 Kbps
    Track name : Chuva no Minha Janela [rain on my window]
    Performer : Chuva LLuvia
    Recorded date : Timeless
    Comment : Processed by SoX

    Audio
    Format : FLAC
    Format/Info : Free Lossless Audio Codec
    Duration : 5mn 21s
    Bit rate mode : Variable
    Bit rate : 809 Kbps
    Channel(s) : 1 channel
    Sampling rate : 48.0 KHz
    Bit depth : 24 bits
    Stream size : 31.0 MiB (100%)
    Writing library : libFLAC 1.2.1 (UTC 2007-09-17)

    original 24-bit is kept sampling rate remains the same bit rate halved but fair enough since now mono
    hope this helps


    PS if you want to pep up your volume on your new mono file you can use the gain function


    Code:
    sox monofile.flac monofilewithhikedvolume.flac gain +10


    will pep it up


    to check levels before doing so first play it to find your number of choice

    Code:
    play monofile gain +10
    Code:
    play monofile gain +20
    etc...
    Last edited by shantiq; April 12th, 2012 at 09:27 AM.
    Linux is Latin for off-the-beaten-track [◄►] ● Is there Voodoo in the machine?
    ShanArt ● Mark as SolvedXmms

  3. #3
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    Re: For all you Audiophiles, need help making script to combine Stereo chans then exp

    Quote Originally Posted by shantiq View Post
    sox should do it easy and beautiful


    Code:
    sudo apt-get install sox


    Code:
    sox originalfile.flac -c1  monofile.flac

    see here





    original 24-bit is kept sampling rate remains the same bit rate halved but fair enough since now mono
    hope this helps


    PS if you want to pep up your volume on your new mono file you can use the gain function


    Code:
    sox monofile.flac monofilewithhikedvolume.flac gain +10


    will pep it up


    to check levels before doing so first play it to find your number of choice

    Code:
    play monofile gain +10
    Code:
    play monofile gain +20
    etc...
    Wow, thanks man, but I just want to actually combine 2 Stereo channels - not necessarily make it Mono - check this out:

    See, thats what I want to fix - put them together, and I have to do it for the whole album. I just want to make a script that will go through and do that for all the songs.

  4. #4
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    Re: For all you Audiophiles, need help making script to combine Stereo chans then exp

    Quote Originally Posted by shantiq View Post
    sox should do it easy and beautiful


    Code:
    sudo apt-get install sox


    Code:
    sox originalfile.flac -c1  monofile.flac

    see here





    original 24-bit is kept sampling rate remains the same bit rate halved but fair enough since now mono
    hope this helps


    PS if you want to pep up your volume on your new mono file you can use the gain function


    Code:
    sox monofile.flac monofilewithhikedvolume.flac gain +10


    will pep it up


    to check levels before doing so first play it to find your number of choice

    Code:
    play monofile gain +10
    Code:
    play monofile gain +20
    etc...

    ALSO - would using the '1$' or '$1' param work with sox? I want to make this into a script that I can right click and use

  5. #5
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    Re: For all you Audiophiles, need help making script to combine Stereo chans then exp

    ok you got me confused Alex :] are they not always split AND different it shows 2 channels if it is stereo


    see here mine rain.jpg


    and then only 1 [if you want the same to come out of each speaker]


    mono.jpg


    on your picture it is like my first one stereo


    not sure if i understand what you mean then someone else might

    as regards scripting i have no extended knowledge there sorry

    with above command this works for bulk


    Code:
    for f in * ; do sox "$f" -c1  "${f%.*.flac}.flac"; done
    Last edited by shantiq; April 12th, 2012 at 05:49 PM.
    Linux is Latin for off-the-beaten-track [◄►] ● Is there Voodoo in the machine?
    ShanArt ● Mark as SolvedXmms

  6. #6
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    Re: For all you Audiophiles, need help making script to combine Stereo chans then exp

    Quote Originally Posted by shantiq View Post
    ok you got me confused Alex :] are they not always split AND different it shows 2 channels if it is stereo


    see here mine rain.jpg


    and then only 1 [if you want the same to come out of each speaker]


    mono.jpg


    on your picture it is like my first one stereo


    not sure if i understand what you mean then someone else might

    as regards scripting i have no extended knowledge there sorry

    with above command this works for bulk


    Code:
    for f in * ; do sox "$f" -c1  "${f%.*.flac}.flac"; done
    Thanks man, yeah I meant I wanted them in 1 single sound - mono - so that way I could hear it through both speakers equally.

    and also, what exactly does the "$f" stand for? can you explain the lettering in the command and what it does?

  7. #7
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    Re: For all you Audiophiles, need help making script to combine Stereo chans then exp

    hi there again Alex


    what exactly does the "$f" stand for? can you explain the lettering in the command and what it does?

    sorry i cannot i just know that it works and have tested it. I am no programmer I just collect bits of code i can use



    av you tried this line on your files? it will convert all of them [from stereo to mono and keep original files too] simply go to terminal cd to folder and paste




    regards shan
    Linux is Latin for off-the-beaten-track [◄►] ● Is there Voodoo in the machine?
    ShanArt ● Mark as SolvedXmms

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