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