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ThePirateMajesty
Participant
June 22, 2010
Question

Remove Voices and Background Noise From Video

  • June 22, 2010
  • 2 replies
  • 41065 views

Okay,

So I have a couple videos with some cool music in the background, and I like listening to it. However, they are blocked by background noise and dialogue in the video. I've been searching for a pretty long while on how to get rid of the background noise and the voices. I've learned that this is in fact very possible, and that Adobe Audition comes highly recommended for doing this task. Before I go downloading any program to my computer, I'd like to know how to do this. Which format should the video file be under (wmv, avi...etc) or if it should just be an Mp3. Please help.

And Thanks in Advance,

ThePirateMajesty

    2 replies

    Bob Howes
    Inspiring
    June 25, 2010

    Those who have told you that what you're asking for can't be done--by ANY software--are correct.  The "unbake a cake" analogy is a good one.  Once an audio track is mixed together, you'll never be able to completely isolate one element from another--there's too much overlap.  If you think about the frequency range of the human voice, you'll realise that it overlaps with most common musical instruments.  Since software can't know whether that 400Hz note is from a voice or a guitar (just an example), it'll either cut out everything at 400Hz or leave it all in.

    Having said that, depending on how the track has been made and mixed together, Audition is probably one of the best pieces of software out there at playing with this sort of thing.  The results can be anything from amazingly good to amazingly bad depending on the source material though.

    Some of the built in Audition tools to have a look at and play with would be:

    Effects/Stereo Imagery/Centre Channel extractor which lets you boost or try to remove parts of the audio track.  However, the effectiveness will depend entirely on how the mix you're playing with was recorded and too much use can really destroy the bits you want to keep.

    Restoration/Noise reduction:  can be effective on any really constant background noise but, again, over use can mess up your music.

    EQ can let you cut certain specific frequencies and boost others.  However, as said, the human voice spans a wide range of frequencies shared with musical instruments.

    Spectral View tools let you actually draw around certain parts of the audio and either just delete them or fill the hole with other sounds--extremely powerful but very time consuming and takes practice to get good at doing this.

    (I'm not going into the details of how to use the individual tools--each subject would need several pages of instructions.  The Audition manual or some of the online tutorials are a better bet once you know what to look for.)

    So, to sum up, no software in existence can do what you want at a simple press of a button.  However, if you are will to accept that the results will never be perfect and will often be dire, Audition has one of the best range of tools to ATTEMPT this of any DAW on the market--and certainly the very best range at its price bracket.  If you've head instrumental versions of music used in the background of TV shows, that's because, at a professional level, companies just buy access to the unmixed music tracks.  However, only trying and playing will let you see how close (or not close) Audition can get to what you're after.

    Bob

    June 22, 2010

    The info. you need is in your help fil

    e under

    video Kind Regards Bill Lane

    ThePirateMajesty
    Participant
    June 22, 2010

    First I'd like to know if Adobe Audition can perform the task at hand with videos. Is this at all possible?

    ThePirateMajesty

    ryclark
    Participating Frequently
    June 23, 2010

    No, it is impossible to do what you want. You can't "unbake the cake".The only thing of that sort you can do with Audition is to remove background noise like a steady aircon hum or tape hiss.