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Join author Brian Trifon as he shows how to improve music and audio productions using virtual instruments in Logic Pro. This course tours the program's virtual instruments, including the ES2 hybrid synthesizer, Sculpture physical modeling synthesizer, EFM1 FM synthesizer, the EVOC 20 vocoder, the Ultrabeat drum synthesizer, and the EXS24 sampler, and shows how to achieve various effects with each instrument's parameters. The course also covers working with oscillators and filters, understanding signal flow, creating custom synthesizer patches, adding effects, synthesizing speech, creating a library of custom sound samples, and much more.
Virtual Instruments with Logic Pro will be updating on a monthly basis, eventually covering all the virtual instruments in the application. Look for the latest movies here and on the lynda.com blog.
So let's explore some of the sample- editing and looping features in EXS24. So I am going to create a simple one-zone instrument. I am just going to drag in that synth hit that we were working with before. So I am going to go to the Finder, and I will go to the Desktop, and Exercise Files folder, and EXS24. And then we have the Audio Files folder here. So, in Synth_Velocity, I am going to choose one of these, and we will make our kit based on that. So let's listen to the C2_bass_med-hard.
So I can just hit the spacebar to audition it in the Finder. (music playing) That sounds cool, so let's use that. So I am going to drag and drop it into the arrangement. So back in Logic, I am going to open up EXS24 and open up the sample instrument editor. And then to make this map across the keyboard, I am just going to drag and drop the audio file right here, and it will map it across the range of the keyboard.
So now when I play the keyboard, you can hear we've got the sample. So now I want to adjust the start and end point of this sample. So what I am going to do is set our View settings to View All. Then I will scroll over, and you can see that I've got the Sample column here. So there is Start, End point, and then Fade. So Fade is going to be the amount of fade-out time if I have a one-shot sample. So let's just focus on start and end point. So I can adjust the start and end point just by dragging here.
So if I am playing, I can audition it while I am doing this. But this isn't really the most efficient way to edit the start and end points, because the time unit here is in samples, which is a really, really small amount of time. So it's better if I can see what I'm doing. So the way I can do that is if I scroll back over to left, where it says Audio File and so here is the audio file in our zone, if I double-click on it, it opens it up in the Sample Editor. So that's behind this window.
Here's the Sample Editor, and then now I can adjust the start and end point visually. So I can drag this anchor here, and then here's the end point, and so now when I open back up the Editor and take a look, you can see it updated the start and end point and now, when I play it, I can hear that it's different. So there we go! So what if I want this to loop because I want to be able to hold this note and want it to sustain forever? It doesn't have to necessarily be a perfect loop, but I just want this to ring out for longer. So what I can do is turn on the Loop mode, and then I can adjust my start and end points of the loop right here.
Again, this is probably easier to edit visually. So we can do that by going back over to where we have the zone and the audio file name, and I am just going to double-click on it. Now, when I go back to Sample Editor, you can see that it has this green bar down here. So this is my loop's start and end point. So I am going to go ahead and set that. Let's just set our loop point to something that's rather small, and let's see what it sounds like. (music playing) So you can hear it's repeating. You can really hear the loop.
So I will play it somewhere else. (music playing) So if I play it up higher, because it's playing back through the audio file faster, the loop points are then smaller. So it's kind of a cool sound but for certain contexts, it's not going to sound good. So it depends on the type of music and other stylistic considerations. So let's try experimenting with different-sized loop points. So what if I have a really small loop point? So if I do that, I can get kind of a buzzy sound from the loop. (music playing) It kind of sounds like it's freezing time. (music playing) So that's kind of interesting! But it's not very smooth. All these loop points right now, you can really hear it looping.
So one way to help ease the transition between the loop start and the loop end is to do a cross-fade between them, and the EXS24 Editor can do that. So I will bring it up and if we go back over to our Loop parameters, you can see I have got this XFade parameter here. So that's where I can adjust the amount of time that's going to cross-fade between the start and end point of the loop. (music playing) So you can already hear it's a lot smoother, and if I increase the time even more, it's going to even it out, because what a cross-fade is doing is it's taking part of the end of the loop point and it's folding it over to the beginning and taking part of the beginning and tacking it onto to the end, and so that overlap creates a smoother transition. (music playing) If there is a difference in amplitude, so a difference in volume between your start and end point, it is good to also try an equal-power cross-fade.
So I can select that here. It's just a different cross-fade shape. Sometimes that makes a difference; sometimes that makes it work better. Also, another thing that can happen when you're looping a small segment of audio, it can sometimes sound out of tune. So you have this fine-tuning adjustment here that could go in 50 cents either direction. So I can listen to it while I am tuning. So I can fine-tune it. And that's if I was playing against something else, and it just was sounding out of tune. This is how I can make up for it. Now that we've explored how to set our start and end point of sample--we can also set up loop points-- let's try sculpting the sound with the filters in EXS24.
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