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So let's take a look at the oscillator section for ES 1. So over on the far left, we can choose the octave. It has it in terms of feet, and that terminology comes from pipe organs. So we've got 4 feet, 2 feet, 8 feet, 16 feet, 32 feet. So the bigger the number, or the more feet, the longer the pipe, the lower the note. So right now I've got 4 feet. And if I were to play 8 feet, that's going to be an octave lower. And 16 feet, that's an octave below that, and 32 feet's an octave below that. And then of course, 2 feet is an octave above 4 feet.
The rest of the oscillator section here we have got a primary oscillator and beneath that a sub-oscillator, and we've got a mixed control to balance between the two. So before I dig in, what I'd like to do is actually change the setting that we have here because the default setting when you open up ES 1 kind of has a lot of things going on. So I want to select a patch that's a bit more neutral. So I am going to go to this Preset menu up top, select ES 1 Start. So what happens here is we've got the Mix slider all the way to the top, so all we are going to be focusing on right now is this primary oscillator.
So what I can do is select the waveform with this knob right here. So it's set to a sawtooth waveform, so I can play that, and then if I move this here, move it to a triangle. Or if I go up here, I can move it to a square wave. The cool thing about this square wave here is I can actually adjust the symmetry, so I can adjust the pulse width of it by moving this further to the right. You can hear the sound gets much thinner as I go and adjust the symmetry all the way to the point where it's just a very thin sound.
And notice that movement. That might be something later that we want to modulate or have move around in our sound, because it's an interesting texture. So that's the primary oscillator. The sub-oscillator is down here. What I am going to do is adjust the Mix slider so that it's fully down in sub-oscillator. So right now if I play, I get silence, and that's because this oscillator is turned off. So what I can do is change this here and select any number of these waveforms. So we've got some interesting waveforms here. There is the square wave, and it's going to be an octave below the primary oscillator that's above.
Some of these are actually two octave below. I have got a couple of pulse waves here, and remember a pulse wave is basically just a square wave, but it's lacking in symmetry. So that's two octaves below the primary oscillator. We've got another pulse wave here, and we've got a blended pulse wave and sawtooth waveform here, and then another variation on that. Furthermore, we've got a noise generator, so we can generate white noise, and an external input.
And so what this allows us to do is use the sidechain input on ES 1 to run an audio signal through the whole synthesizer aspect of ES 1. So you can run it through the filter and run it through the envelopes, so it's a pretty cool feature. So one of the main things you'll want to do once your get head around the sub-oscillator is to find a good balance between the primary and sub-oscillator. So let me explore that. I'll set this to one of the pulse waves. And so I can adjust this Mix slider and try and get a good blend between the two. And it's good to experiment with the other waveforms as well, so we can try sawtooth waveform for the primary oscillator. We can try a different waveform for the sub-oscillator.
So even adjusting the balance, that might be an interesting sound too, so we'll keep that in back for mind for later when we are thinking about things to modulate. So next, let's take a look at the filter section.
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