Join Robbie Carman for an in-depth discussion in this video Fixing audio problems before syncing, part of Premiere Pro Guru: Sync Sound Workflow.
- So throughout this title we've synced and merged clips in the project panel, we've aligned clips in the timeline and synchronized and merged there. Throughout, I've alluded to a method of synchronizing clips that we actually haven't used yet. We've of course used in and out points. We've used markers. But the one option that I have sort of alluded to is using audio. Now, synchronizing by using audio is a little bit of magic here inside of Premiere Pro. The way it works is that Premiere Pro can compare the wave forms of your reference audio as well as your high quality audio and align those up together.
Again, it's kind of like magic, and you don't have to pay attention at all to things like, I don't know, a reference sync point like a slate or a hand clap or something like that. Premiere Pro can do all the heavy lifting for you. However, it's not all roses. If your audio quality is not good, especially from your reference audio, well, then you're going to have a really hard time aligning clips. I want to show you how this works in this movie, as well as talk about how we can actually repair and fix audio prior to syncing with the audio method.
So here on this timeline, 04<u>03</u>Fixing Audio Problems Before Syncing, let's just go ahead and take a listen to the reference audio We've previously synced these clips up by using these markers here, but we're going to do it in a different way here in this movie. Let me go ahead and mute the high-quality audio and I'll just play back this reference audio. (beep) - That was louder. - Yeah, that doesn't sound so great. There's a lot of HVAC noise in the background. There's people talking. Just not great audio. I'll go ahead and mute the reference audio and listen to the high-quality audio.
- Go ahead and turn the volume up. - So you want them both - Yeah, that sounds a whole lot better. There's still a little noise, but it's not objectionable at all. So now the next thing we can do is go ahead and select these clips. I'm going to try to use the audio method to sync. So I'll select all of the clips. I'll right click. I'll come down and choose the synchronized command. We're not going to merge these clips yet. I'm just going to choose synchronize. Besides all the other options that we've previously taken a look at, I'm going to go ahead and make sure that this option for audio is selected.
We can choose which track of the audio that we want to use, Channel 1, Channel 2, or we can do a Mix Down. I'm fine with Channel 1. I'll go ahead and click okay. When I do, in just a second, you can see that the clips lined up, but I don't think they lined up correctly. Because if you remember, we previously added markers on both of these clips where the actual pop was in the slate. And, yeah, that's not looking like they're in line. But let's just make sure that something didn't change and we're not crazy. I'll go ahead and mute my reference audio here, and then come down to this clip.
Let's go ahead and make this a little bit bigger and play back. - Um, not that I can sing like any of them, but ... - Okay, clearly we are not in sync. I think I know what happened. The reference audio in its quality was not very good. Sometimes, because remember the method that Premiere Pro uses is comparing the wave forms together. If your reference quality audio is not so good and is really noisy, well that can throw off Premiere Pro quite a bit. But fortunately, we can fix that using Adobe Audition.
What I'm going to do on this clip is I'm actually going to repair this clip and noise reduce it. The way I'm going to do that is by selecting the clip and then right clicking on it, and I'm going to choose this option right here, Edit Clip In Adobe Audition. So I'll go ahead and choose that, and in just a second Audition is going to open up. Now I know that this is a Premiere Pro Guru title, and you might never have used Adobe Audition before. Don't worry. I'm going to go step by step with just a few options to sort of noise reduce this clip. On your own, in your own projects, you can experiment with the noise reduction options, but I just want to show you basically how this works.
The first thing that we need to do is identify what is noise in this clip. Let me go back to the beginning and I'll just play. - Second mark. - Right before that person starts talking, I don't know about you, but that sounds like noise to me. Let me go ahead, and I'll zoom in just a little bit there, and play it one more time. Yeah, that's a lot of noise. So I'm going to select that bit right there as being representative noise in this clip. Maybe I want to select just a little bit more. Let's go ahead and play that. Oops, I got a little bit of her voice.
I need to be careful of that, so I'll back that off a little bit. How about right about there. Yep, that sounds pretty good. Next, I'm going to come up to the Effects menu, and then down to this option, Noise Reduction/Restoration. I'm going to choose this option right here, Capture Noise Print. Or you can use the keyboard shortcut, shift + p. What Capture Noise Print will do, is it will tell Audition, "Hey, remember these frequencies as being noise." So I'll go ahead and choose that option, shift + p, and I get this little warning dialogue that's saying, "Hey, you're not actually noise reducing.
"You're just capturing the noise print. "Is that okay?" Click Okay. Let me go ahead and make my interface a little smaller here so we can see the entire waveform. Then I'm going to click anywhere off of the area there to deselect that portion, and I'll press command + a, to select the entire waveform. I'll come back up to the Effects menu, down to Noise Reduction/Restoration. Now let's choose Noise Reduction Process. This is where we actually noise reduce the clip. Now down here at the bottom of the window, I can choose to loop this clip, and I can also choose to play it.
Let's play it. - Second mark. - Holy smokes. So we've clearly removed a lot of the noise on this shot, but I think you can see if I play it again, things kind of sound a little weird, a little robotic. That's not going to work for me either. So what I'm going to do is while this is playing I'm going to adjust my threshold line up here in my controls, so where I get a little bit better sounding audio.
Let's bring this down quite a bit. - All right, stand by on set. When you're ready, Doug. - Something like that. - So Jason, people that are new to your music, how would you describe your music? - Yeah, that sounds much better. Maybe a little less low end. You have to play with these controls just a little bit, but I think that's much better. I haven't removed all of the noise, but I've gotten rid of quite a bit of it. I can also play with these advanced controls and the amount of noise reduction. But I think right now if I take one more listen - - Okay. So what are some of your ...
- Yeah, that's sounding pretty good. Maybe right about there. - Develop the tone or the sound that you have on your albums. - Okay, that sounds pretty good. I'll go ahead and click Apply. When I do that, you'll actually notice that the entire waveform redraws. Did you notice how it got smaller? Yeah, that's because I removed a lot of the noise in the shot. Okay, so we've finished our noise reduction pass here inside of Adobe Audition. I want to be clear. This probably wasn't the best noise reduction pass ever. But that's really not the point. I just wanted to actually get usable audio. I didn't care that it was perfect.
Because after all, this is the reference audio. So I probably could have paid a little bit more attention to noise reducing. But in your own projects, how much you pay attention is totally up to you. But for right now, I'm totally fine with the work we did. So here in Audition, I'm simply going to press Save, and then I'm going to switch back over to Premiere Pro. Our clip is there. It's updated. Because remember, we're working on a copy of the original clip when you send over to Audition. So now that I've got this saved back here in Premiere Pro, I'm going to select both of these clips. Let's right click again, and I'll come down to Synchronize, and we'll go ahead and choose the Audio method once again.
Hopefully now because we've cleaned up that audio a little bit, it will synchronize better. Click Okay. And just like that, you can see that the audio now synchronizes without a problem, and indeed, the markers that we had previously laid are once again lined up. Now, a lot of times when you have audio, especially noisy audio, and you try to use that Audio method to synchronize your clips, and it won't work, just a little bit of handywork in a tool like Adobe Audition to do some noise reduction will go a long way to helping you do the automatic method of using audio to synchronize your clips.
- Getting a good sync when recording in the field
- Organizing audio and video with bins
- Marking sync points
- Choosing a sync method from the Project panel
- Syncing clips manually in the Timeline
- Examining metadata for merged clips
- Syncing multiple video angles to a single audio track
- Syncing with PluralEyes