WEBVTT
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In this video, I'm going to show you
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a quick and easy programme you can use
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to remove background noise from your own videos.
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Sometimes it's hard to manually do it with the frequencies,
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like we learned with EQ,
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and the Low Pass and the High Pass Filters.
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Audacity is a free programme, that you can download online,
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just search for Audacity and you can download it for free
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and it has a really powerful Noise Removal Effect.
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There's lots of stuff you can do in Audacity,
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I'm just going to show you the Noise Removal Effect.
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Open up Audacity, once you've downloaded it,
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then with any sort of audio track or even video,
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you can just drag and drop it right into Audacity.
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It's going to import the files
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and then you will see a waveform for that file
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and you can play through it, you can just click on this
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with your space bar or with your mouse
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and then press space bar to Play
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and you'll see levels bouncing up here.
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You can zoom in with the Zoom tool right here
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and to remove background noise, what you wanna do
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is find a part of the clip, that has no talking.
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So I'm gonna go back to this little Selection tool
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right here, Play right here
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For all kinds of reasons and, but--
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So you want a good chunk, where there's no audio,
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so if you see no waveforms, something like this,
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click and drag over it and that creates the Selection
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and then if you play through it, it just stops right there.
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So it just plays through the selection.
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I'm going to zoom in here even more
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and turn it up even louder to see what this sounds like.
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Make that selection again.
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There's just a little bit of background noise,
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it's very subtle, but you can hear it,
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if you play it up loud.
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So then with your selection, go to Effect,
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and then Noise Removal.
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The first step is to just click this Get Noise Profile,
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click that button.
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What happens is it sees our selection
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and it analyses it to see all the frequencies,
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that are playing.
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Then when we unclick this, zoom out with the Zoom tool,
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you can right-click to zoom out,
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then with our Selection tool,
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just select our entire clip right here,
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just by clicking on the clip right over here
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on the top left, then go to Effect, Noise Removal again
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and now we have these preset settings,
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that I think work really well,
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so I'm just going to leave those and click OK.
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It's going to remove the noise.
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Basically what it does is it takes those frequencies,
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that we selected and it removes
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all of those from the entire clip.
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So it doesn't do much for this clip,
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but it will if you have a lot of background noise.
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I mean, we were using a pretty professional setup,
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so we didn't have that much noise going on,
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but I wanna show you what happens
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when, say we select this setting right here,
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where Anthony's talking.
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We go to Effect, Noise Removal, Get Noise Profile
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and then we select the entire clip,
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then go back to Effect, Noise Removal
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and then we say OK.
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It's going to remove all of those frequencies
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of Anthony's voice and you'll see that these waveforms
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dramatically change, dramatically goes down
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and it sounds so wacky, you would never wanna do that,
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I just wanna show you what's actually happening,
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because you couldn't really tell,
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when I was taking the sample where Anthony wasn't talking,
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because there wasn't that much background noise,
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but trust me, if you have some wind in the background,
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if you have some loud buzzing, or something like that,
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this can really help.
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Once you have removed your audio,
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you want to save this as a separate file,
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so go to File, Export
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and it's going to ask you to save a WAV file,
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or you can choose a different type of file,
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AIFF or WAV are the ones that I would suggest.
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MP3 and all these other ones, or some of these other ones,
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are compressed, so I would just stick with WAV.
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Then you can save it to wherever you're working
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on your project, select Save
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and it will ask you if you want to add any metadata to this,
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so this is like if you were exporting a song
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and you had Artist Name, Year, Genre,
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we're not gonna add any of that.
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I'll just say OK, it's going to save it to the desktop,
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where I chose and then we're going to have to
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import this back into Adobe Premiere Pro
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and sync it up with our video itself.
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So you might want to do this
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before you start editing your actual videos.
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We don't really need to do this for the project
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we're working on right now, but in the future,
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it's a good idea to do the noise removal
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before you start editing,
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so you don't have to deal with re-syncing any footage.
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Thanks for watching and we'll see you in another lesson.