From the course: Audio for Video Editors: Essential Terms

Measuring perceived loudness in LKFS, part 2

From the course: Audio for Video Editors: Essential Terms

Measuring perceived loudness in LKFS, part 2

- [Instructor] Right now let's use the Loudness Radar that comes on board with Premier. And right clicking on it, you notice that it's set to Post Fader. Anything that is measuring the audio or your mix needs to be Post Fader. Otherwise it'll, the measurements will be wrong. It won't, won't equal exactly what you need it to equal. Likewise, when you're doing any type of dynamics you need it to be Pre Fader, because otherwise, it won't affect the audio happening. You'll go, what's happening, nothing's happening, why? It's not in bypass, it's working. Check to see if you have the compressor on the master Post Fader. If you do, it will do absolutely nothing. So you have to make sure that it's in Pre Fader. So now that we've set our voices, we need to set up the Loudness Meter to make sure that it's correct. The Loudness Meter has a lot of presets that you can choose from and some of 'em are worthwhile and some of them are not. I would just keep it at the first one, 85 LKFS. But where you really will set your proper settings for the Loudness Radar is in settings. So you have your target loudness, which is -24 LKFS, that's what it is in the United States primarily, 24 plus or minus two, usually. Radar Speed, Radar Speed is how long it will take to reset itself, LKFS is volume perceived over time. So if you're working on a 20-minute piece, you need to know, you need to have it set for 20 minutes or a 60-minute piece, you need to have it set for 60 minutes and so on and so forth. But it also resets itself every four minutes, or every minute, or every 30 minutes. So depending on where you are in your mix, will depend on what radar speed you use. For instance, if you're mixing along in your setting levels and you're getting a mix going, you want to refresh that more frequently, so one minute or four minutes. If you're actually playing it down to get the reading at the end of the piece, then you would want to set it for over the amount that your piece is. So if your piece is 20 minutes, set it for 30 minutes, because otherwise it'll refresh halfway through and you won't get the proper reading. So make sure that you set it for what your purpose is. Right now, we're setting up the levels, we're not testing the levels at the end. So I'm going to go ahead and leave that at a minute because I like it to refresh a lot. It helps me understand where I'm at. Radar Resolution is showing you how much resolution is in the wheel, 6-DB is the standard, and I find that to be really, really nice, but again, it's preference and you can choose which one you prefer. Momentary range is relative to exactly what's going on in that moment, and it helps the way, and I'll show you when we're playing, how it actually works in action. Low Level is also showing you how it works in action. So actually let me just go ahead and play. We have the meters and the compressor both set up so that they'll float on any screen that you're at, which is really nice when you're measuring to keep the, to keep at least Loudness Radar up, so that you can actually see what's going on with the audio and the meter at the same time. So this little blue button here does that for you. So I'm engaging that, so that when I jump back to my timeline, off the track meter, you can see the radar, while you're in the timeline. So if you jump back to Radar and see it's sweeping now. So in settings, what these mean is that the, - Was extraordinary. - [Instructor] The Radar Resolution, 6-DB, let's do something, totally different, 12-DB. - If she's as good as I think she is. Why has nobody else heard of her? - [Instructor] You can see how much more expanded it is so that you can see much more fine, where you're at in the colors, where you're at with your DB. I don't really look at that, so 6-DB is fine. I use my regular meters to look at DB. Momentary range, nine to 18, let's switch it to 18 and see. So you get a much more Momentary Range up here of your DB. So let's jump back to nine, and you can see there's less range there. So it just depends on what you prefer. Again, I'm not really using it that way. So the plus nine is more than adequate for that need. Low Level, depending on where, if you have a low level that you have to hit, is where you would set that. You usually can't be below -26, so it's a good place to set it for LKFS. In Europe, it's more like 24, but -26, again, this is a preference, if you want to see where you're going too low, you can set it for wherever you want to get triggered for that low level.

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