WEBVTT 1 00:00:01.336 --> 00:00:03.465 Let's make our audio sound better 2 00:00:03.465 --> 00:00:05.382 with two quick effects. 3 00:00:06.396 --> 00:00:08.516 To really grasp this lesson, you have to understand 4 00:00:08.516 --> 00:00:12.679 a little bit about frequencies or audio frequencies. 5 00:00:12.679 --> 00:00:15.679 Everything you hear has a frequency. 6 00:00:17.187 --> 00:00:19.705 Low sounds have low frequencies 7 00:00:19.705 --> 00:00:23.045 and high sounds have high frequencies. 8 00:00:23.045 --> 00:00:24.688 I don't really have a high voice though 9 00:00:24.688 --> 00:00:26.220 so I can't really do that. 10 00:00:26.220 --> 00:00:28.056 When you're shooting an interview 11 00:00:28.056 --> 00:00:32.650 and you wanna get rid of some of that background noise, 12 00:00:32.650 --> 00:00:34.200 an air conditioning in the background, 13 00:00:34.200 --> 00:00:36.587 a car driving by, a plane flying by, 14 00:00:36.587 --> 00:00:38.848 some wind that caught the microphone. 15 00:00:38.848 --> 00:00:42.958 One way to improve that noise is by removing 16 00:00:42.958 --> 00:00:44.971 some of the very high frequencies 17 00:00:44.971 --> 00:00:47.409 and some of the low frequencies. 18 00:00:47.409 --> 00:00:48.778 If you remove too much, 19 00:00:48.778 --> 00:00:51.890 you're going to start removing our voice 20 00:00:51.890 --> 00:00:54.719 which is more of a mid-range frequency. 21 00:00:54.719 --> 00:00:56.291 But let's just dive in 22 00:00:56.291 --> 00:00:57.893 and you'll kind of start to understand 23 00:00:57.893 --> 00:01:00.677 when you start to play around with it yourself. 24 00:01:00.677 --> 00:01:02.633 If you select a clip and you go to 25 00:01:02.633 --> 00:01:05.757 your effects bin over here, not your effects controls, 26 00:01:05.757 --> 00:01:09.684 but you effects bins, you'll see under audio effect 27 00:01:09.684 --> 00:01:13.684 that there is a high pass and a low pass filter. 28 00:01:15.470 --> 00:01:17.475 So let's take this high pass on. 29 00:01:17.475 --> 00:01:20.725 And what happens when you do high pass, 30 00:01:21.829 --> 00:01:25.298 is it's saying that I'm passing through 31 00:01:25.298 --> 00:01:29.465 all of the frequencies above whatever amount you want. 32 00:01:30.375 --> 00:01:32.292 So I'm just gonna close this volume so you can see 33 00:01:32.292 --> 00:01:34.138 a little bit more up here on the left. 34 00:01:34.138 --> 00:01:37.851 When we apply that high pass to this track clip, 35 00:01:37.851 --> 00:01:42.018 you get this high pass effect and the cutoff is 1495 hertz. 36 00:01:43.253 --> 00:01:44.675 That's really high. 37 00:01:44.675 --> 00:01:46.842 So listen to it right now. 38 00:01:50.132 --> 00:01:52.875 Only the high parts, the high frequencies, 39 00:01:52.875 --> 00:01:55.082 are allowed to play. 40 00:01:55.082 --> 00:01:57.749 If we drop this down to say 100, 41 00:02:00.610 --> 00:02:02.591 it sounds a lot more natural 42 00:02:02.591 --> 00:02:05.145 because it's allowing all of the hertz, 43 00:02:05.145 --> 00:02:08.556 all of the frequencies above 100 to play through. 44 00:02:08.556 --> 00:02:10.342 If we go to zero, 45 00:02:10.342 --> 00:02:11.551 well it won't let me go to zero 46 00:02:11.551 --> 00:02:14.736 because that's like if this effect wasn't even on here. 47 00:02:14.736 --> 00:02:18.903 For most people, going up to 100 or even 150 or 200, 48 00:02:19.793 --> 00:02:22.332 if someone has a high voice, is safe 49 00:02:22.332 --> 00:02:24.845 because you're not getting rid of any of the frequencies 50 00:02:24.845 --> 00:02:27.407 that are in their talking 51 00:02:27.407 --> 00:02:28.510 but you're getting rid of any of 52 00:02:28.510 --> 00:02:32.552 the background rumbles that you might hear. 53 00:02:32.552 --> 00:02:35.177 The same thing goes for the low pass filter. 54 00:02:35.177 --> 00:02:37.212 If we take this low pass filter, 55 00:02:37.212 --> 00:02:41.379 it's allowing only the low sounds or the low frequencies 56 00:02:42.508 --> 00:02:44.925 to play below this frequency. 57 00:02:47.124 --> 00:02:50.703 So if it's at 1495 then it's pretty low. 58 00:02:50.703 --> 00:02:54.536 So we have to take this up to say 5,000 or so. 59 00:02:57.649 --> 00:02:59.418 And that sounds a little bit too low too 60 00:02:59.418 --> 00:03:00.998 because he has kind of a deep voice. 61 00:03:00.998 --> 00:03:05.165 I wanna have a little bit more of his higher frequencies. 62 00:03:07.367 --> 00:03:09.717 But there are some of the background noise 63 00:03:09.717 --> 00:03:11.717 that it does get rid of. 64 00:03:12.975 --> 00:03:15.630 And you can really notice this if you put on the headphones, 65 00:03:15.630 --> 00:03:19.934 play it really loud without these effects on it. 66 00:03:19.934 --> 00:03:23.490 You could also click these bypass options right here. 67 00:03:23.490 --> 00:03:26.779 Which is just a quick way to say to Premiere Pro, 68 00:03:26.779 --> 00:03:29.360 I don't wanna hear this effect on, 69 00:03:29.360 --> 00:03:32.602 I just want to compare it to before and after. 70 00:03:32.602 --> 00:03:33.831 So if you wanna turn it off 71 00:03:33.831 --> 00:03:36.716 or just test it without this effect, 72 00:03:36.716 --> 00:03:40.223 you can just click that bypass right there. 73 00:03:40.223 --> 00:03:41.645 So the general rule of thumb 74 00:03:41.645 --> 00:03:44.750 is to quickly get rid of some of that background noise, 75 00:03:44.750 --> 00:03:48.104 add the high pass and low pass filters, 76 00:03:48.104 --> 00:03:50.611 and set the high pass to around 100 77 00:03:50.611 --> 00:03:53.861 and the low pass to around 5,500. 78 00:03:53.861 --> 00:03:55.380 And go up and down from there. 79 00:03:55.380 --> 00:03:57.206 Just play around with it. 80 00:03:57.206 --> 00:03:58.578 See what it sounds like. 81 00:03:58.578 --> 00:04:00.974 Make sure you're not cutting out any of the frequencies 82 00:04:00.974 --> 00:04:03.459 of the person's actual voice, 83 00:04:03.459 --> 00:04:05.352 and not changing how they sound 84 00:04:05.352 --> 00:04:09.560 but if you can, remove some of those high levels, 85 00:04:09.560 --> 00:04:10.959 those high frequencies 86 00:04:10.959 --> 00:04:12.961 that you might hear in the background. 87 00:04:12.961 --> 00:04:13.815 Thanks for watching. 88 00:04:13.815 --> 00:04:15.069 If you have any questions, let me know. 89 00:04:15.069 --> 00:04:16.914 And we'll see you in another lesson.