I'm gonna let you listen to just the hiss so you got a chance to see what actually being removed. The greater we reduce things by raising the Noise Floor or raising the decibels that we've reduced. I think you can hear that, the sound gets kind of muffled. Let's just experiment with that by clicking on this, run it through a couple of times. And then Reduce By says how may decibels you're gonna cut it out by, how many decibels will you reduce the noise. This setting here, the Noise Floor says how much you're going to remove, the higher it goes the more you're removing, the more that's below the line here that you're gonna cut out. What I'm gonna do is I'm gonna play this and adjust some of these settings. And you can hear that the music has changed. You can still obviously hear that hiss, it's not dramatically different. So I'm gonna preview this by pressing this play button there. The Default setting is flat but now that I have adjusted this, we've got these settings here, 8dB and 24dB. So I'm gonna pull this thing down a little ways, take my Eye Beam tool here and select that whole thing there. So now I'm gonna select the entire clip here. So anything below this will be cut out, anything above this will be retained. And this is that view of that sound basically from the low, and here the low frequency to the high frequency and the relative decibel levels. If I click on that, and that captures the noise floor. So inside the Hiss Reduction effect, you notice this button is now active. Right now I've got this selection, I need to now capture it. And since hiss is a broadband sound, meaning it covers all frequencies, I want to use the Time Selection Tool so I grab frequencies from the top to the bottom here. So I'm gonna go grab this hiss by just taking my Time Selection Tool and selecting it like so. So to get a Noise Floor, you want to try to get the sound, the bad sound that you want to remove but don't get the regular sound, the foreground sound, the music. There is the hiss right there at beginning before the music kicks in. So I am going to zoom in on by right clicking here on the time ruler, dragging up that little part there so you can see the whole thing. I want to zoom in on that and get a sample of the hiss. I'm gonna zoom in this one because this is the hiss. I'm gonna pull this off to one side like this. To do that, we need to sample the audio we're gonna work with. What it means is that any sound below this line will be removed and any sound above this line will remain. I'm gonna go back to the Default view, which is just a flat line. And the Noise Floor is already applied here from a previous session. So you need to be careful when you work with effects here inside the Editor panel.Īll right, we're gonna work with the Hiss Reduction effect first, click on that, opens up this dialog box. They're also destructive, meaning that if you make a change and then save it with the original name in the original file folder, you will change that original file. They do not work in a multi-track session. And there's Noise Reduction and Hiss Reduction, both of them are process effects, meaning that they work only here inside the Editor view, inside the Editor panel. Go to Effects, go to Noise Reduction/Restoration. Let's just take a look at the two effects that we're gonna work with here. We'll work on the background noises here, which are hiss and static. And we've got a cough here, and a cell phone ring here. This one has the kind of sound that you get with old vinyl records. So you can see the fan noise in the bottom there, the hiss on the top. It's the same music clip repeated over and over with different kinds of noises applied to it. I've got this file that has several noise examples. I'm working here inside the spectral frequency view. And there are two ways to do that in Audition: Hiss Reduction and Noise Reduction. After you've adjusted levels, your first task in the noise reduction and sound removal process is to remove background noises.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |