What to use to edit sound file

Discussion in 'Mac Basics and Help' started by hajime, Apr 11, 2014.

  1. hajime macrumors 68030

    Joined:
    Jul 23, 2007
    #1
    Hello, I have a sound file in .m4a format. For strange reason, whenever I click on it under iTunes, some other music are played. I opened it using QuickTime. The playback is sluggish. For example, I clicked on the middle of the time line, it take about 8 seconds to play back. Is there any good app (preferably free) that allows me to do sound editing such as saving portions of the large sound file into separate smaller files? Thanks.
     
  2. Bookshelf macrumors newbie

    Joined:
    Aug 20, 2008
    #2
    Converting audio files

    Yes download audacity. Its free and very handy for converting audio files.
    You can also do some basic editing.
     
  3. firedept macrumors 603

    firedept

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  4. I'm a ROb macrumors member

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    Aug 14, 2007
    Location:
    Netherlands
    #4
    iTunes can also do some converting, but (previously mentioned) garagaband and audacity are more suited. Even thought their main target is video, also VLC and FFMPEG can do these things.
     
  5. hajime thread starter macrumors 68030

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    Jul 23, 2007
  6. satcomer macrumors 603

    satcomer

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  7. Fishrrman macrumors G3

    Joined:
    Feb 20, 2009
    #7
    You need to "extract" the sound component "out of" the m4a file.

    Audacity may be able to do this.

    There is a small freeware app called "QTAmateur" that may be able to do the conversion:
    https://www.mikeash.com/software/qtamateur/
    It's old, but still runs. I use it all the time for playing sound files.

    You want to convert the sound to 44.1khz, 16-bit ".aiff" format.

    It should then be "editable" in any audio application.
     
  8. roadbloc macrumors G3

    roadbloc

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    UK

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