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Let's take a look at the envelopes in EXS24. So we've got two envelopes here and they're both four-stage ADSR envelopes. And Envelope 1 and 2 work in exactly the same way. The difference is that Envelope 2 is wired to the amplifier, so it's going to control the shape of the volume of the sound. So I am going to load in a sampler instrument so that we can experiment with the envelopes. So I'll click up here and I am going to choose this EXS24 Setup. So these are the sampler instruments that are associated with the EXS24 Setup exercises file.
So I am going to choose WaveTable. That's this sound. And let's take a look at our Amp envelope. So we've got Attack, Decay, Sustain, and Release. So Attack is the amount of time it takes for the sound to go from silence to its maximum level. So with a short attack, that's going to be instantaneous. If I increase the attack time the sound is going to fade in. (music playing) The other feature about this Attack slider is that it can be split into two, like this, and I can have Velocity affect the amount of time of the attack.
So if I play soft, I can have a longer attack. (music playing) And if I play with more force, it's going to be an instantaneous attack. (music playing) The next stage of this envelope is Decay. So that's once it reaches maximum level, the amount of time it takes for the signal to decay or fade back down to either silence or the sustain level. So right now the sustain level is full, so I am going to bring that down. And let's up the decay and you'll hear the sound will instantaneously be at its maximum level, and then it will fade down over the time of 1,152 milliseconds.
So let's listen to that. And I make that decay shorter. Then the next stage is Sustain. So this is a level adjustment. So it's not an amount of time. So this is the volume that it's going to sustain it as long as I'm holding the note. So let me bring up the Sustain level. So when I play it will sustain at this volume as long as I hold the note. So if my Sustain level is near its peak level, there isn't really much the Decay stage can do.
So the last stage of this envelope is release. This is once you've let go off the note how long it takes for it to fade down to silence. So I'll up the amount of release here. So I am playing the note, and once I let go, you can hear it takes a while for it to fade out. So that's the release. Envelope 1 works exactly the same as Envelope 2. The only difference is it's not assigned to anything. So I can assign it in the Modulation Router. I'm going to reset our Amp envelope to a shape where we've got a high level of sustain and a short release.
What I am going to do now is assign Envelope 1 to our Modulation Router. So what I want to do is have Envelope 1 modulate pitch. So I'll set our Destination to Pitch, and our Source is going to be Envelope 1. Then I can adjust Intensity here. This is going to be the range of modulation. So I'll set it up to an octave, so 1200 cents. So now Envelope 1 is going to work as a pitch envelope. So if I increase the attack, we'll hear that the pitch will rise. And then it quickly jumps back down to the note I am playing, because the decay is really short.
So if I increase the decay, it's going to rise and then the pitch is going to fall. (music playing) So, the Sustain would just adjust the offset of the pitch from the note that I am playing. (music playing) It's going to sustain at this pitch here. Then for the Release portion to be active on Envelope 1 when it's assigned to pitch, I also have to have Release on my amplifier; otherwise we won't actually hear the Release portion of Envelope 1.
So I'll bring up the Amp release, and so this will be the amount of time the pitch will descend back down to the note that I am playing. (music playing) So here is the Sustain, and then I let go and it releases. You can hear it fade down. So that's envelope as applied to pitch and we can assign it to other parameters, as well, like filter cutoff and any of the destinations in the list. So there's one other feature about both these envelopes that I'd like to mention. There's a Curve slider here, and this adjusts how the attack on both envelopes is going to be shaped.
So when it's in the center it's just linear. So let's check this out as applied to the Amp envelope, because that's going to be the most clear example. So I am going to turn off our modulation. I'll just set it to neutral in the center here. And if I increase the attack, right now it's going to be a linear fade-up. So we'll just smoothly transition from silence to the maximum level. (music playing) Now if I adjust this curve to exponential, it's going to fade up slower, so it's going to be quieter longer, and then the volume will increase faster.
So let's check that out. (music playing) Then we have the opposite of that, which is logarithmic, so where it will start to fade up pretty fast, and then it will slow down its fade until it's reached the maximum level. (music playing) So that applies to both envelopes. The other one we've got here is this Time slider. What this is going to do is depending where we're playing on the keyboard, it's going to modulate how fast it's going to progress through the envelope.
So if I have the Time slider set all the way to its maximum here, what that means is when I play a low note on the keyboard, it's going to go through the envelope slower; and if I play up higher in the keyboard, it's going to go through it faster. So I am going to set a short attack and no Sustain, short Release, and we'll give it a medium Decay. So if I play a low note, you can hear it takes a while for it to decay. And now if I play up higher, it's going to go through this envelope faster, and it will decay quicker.
(music playing) So that's how the Time parameter affects both envelopes. Now that we've explored how Envelopes 1 and 2 work and how they can be assigned in the router, let's take a look at the next video at how the global and voice settings affect the sound.
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