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DaVinci Resolve - Reducing Wind and Low Frequency Noise in your audio

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  • DaVinci Resolve - Reducing Wind and Low Frequency Noise in your audio

    Some folks here are using DaVinci so I thought'd I'd share how I reduce wind noise from my camera microphones for audio captured in video recordings.

    I do this in the video edit interface, select the video clip with the audio and click on the audio properties top right, then look for the Equalizer settings:

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    In the Equalizer what I do is set up a High Pass filter to take out frequencies mostly below about 500 hertz. Initially it looks like this, you need to toggle it on:
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    Then when turned on there are some frequency bands enabled, just bands 1 and 2:

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    I turn on Band 1 for the low frequency filtering - just click the "Band 1" button to enable it and you get this:

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    Then click on the circled number one and drag it to the right to get a low frequency filter curve between about 250 hertz and 1 kilohertz should be enough:

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    To hear the effect of it play the timeline video and toggle the Equalizer switch on / off and you can hear the difference (it doesn't lose your filter setup if turned on / off).

    If the wind noise is quite strong you can try drag the band 1 filter marker further right to filter higher frequencies than 500hz but if it gets too aggressive I find it can affect the tonality of the audio.

    Sometimes just a small reduction of the wind noise is enough if it can't be completely eliminated. This can also be used to reduce traffic noise and things like that.

    If the timeline has a number of clips and they all need the same filter I just select them all and link them (right click, "link") than apply the same filter to all of them. I usually do the audio as the last part of the edit.

    You can also do noise reduction in the Fairlight audio section but I find this the easiest. I mostly only go to the Fairlight audio interface to check the audio output level is OK and not clipping before the final export - often the output level is a bit too high!

    I hope this helps someone..

    Bill






    https://www.flickr.com/photos/macg33zr/

  • #2
    Thank you so much for this, Bill. I'll have a go with it on today's video and see how it works. Resolve is powerful and I have so much to learn.
    Celeste

    “As my artist’s statement explains, my work is utterly incomprehensible and is therefore full of deep significance” ~Calvin + Hobbes

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    • #3
      Interesting Bill.....Will look at it closely. Thanks..
      https://www.flickr.com/photos/133688957@N08/
      Mark Johnson Retired.

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