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So let's explore the oscillator in ESE. So the first thing we're going to set is the octave. So over on the far left here we've got these numbers: 4, 8, and 16. Those refer to four feet, eight feet, and sixteen feet. That terminology comes from pipe organs. So basically the longer the pipe, the lower the note. So right now I've got it set to eight feet, so this octave here. If I set this to four feet that will be an octave higher. Or I could go to sixteen feet, which will be an octave below the eight feet, or two octaves below the four-feet.
The next important thing that we are all going to check out is this Wave knob here where we can select the different waveforms. But before we do that, I'm actually going to change this preset that we have here, because this one has a little bit too much going on and I'd like to start with something more neutral. So we go to this preset menu up top and select ESE Start. If ESE Start doesn't show up in the preset menu, make sure to refer back to the "Using the Exercise Files" video where I show you where to put the preset files so that they show up properly in the menu. So next let's check out this Wave control here.
So right now we have it set to a sawtooth waveform. So I'll play that. (music playing) If I move this control to the right, we've got a square waveform. The third position here, well, that also sounds like a square waveform. But if we continue to turn the knob to the right, it's going to adjust the pulse width. (music playing) If you look at the oscilloscope, you're going to see that's adjusting the symmetry of this square waveform. (music playing) It's interesting to note what this sounds like when this is actually modulating or moving sort of quickly. (music playing) It kind of creates a nice texture.
If you leave this in a static position-- so we just choose a particular point--it sounds good, but really the interesting aspect of the pulse width it comes through when it's moving. Fortunately, there is a built-in control that allows you to modulate the pulse width. So we will explore that in the next video.
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