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So the next thing let's check out is this Vibrato/Pulse Width Modulation knob. So depending on what waveform we have selected, it's either going to act as a pitch modulation--or sometimes that's referred to as vibrato--or it's going to modulate the pulse width. So if I have the wave set to the sawtooth waveform--so I'll do that here-- and I adjust the amount of this Vibrato control here, you are going to hear a pitch modulation. So I'll play a note and listen. (music playing) So you can hear that subtle pitch movement happening.
The more that I move this knob to the right the greater that pitch modulation is going to be. (music playing) If I move this all the way to the right, you're going to have a really wide vibrato, or a really large pitch modulation. (music playing) Same is true if I set this to the square wave. So let's try that. (music playing) Right, pitch modulation. Also, the other thing I can do is to adjust the speed of that. So if I want there to be a faster modulation happening, I'll use this speed control beneath it.
So I'll move this and increase the speed here. (music playing) Right, really fast? You can go even faster. (music playing) Or I can have it be a slower pitch modulation. (music playing) And if were to change the waveform and move it to the third position, so to the square wave form where we can adjust the pulse width, it doesn't act as a vibrato anymore; it's going to modulate the pulse width. So if I play this-- (music playing) --so notice how the pulse width with the square wave is changing.
Maybe I want to make that faster. So I'll adjust the speed. (music playing) So that's pretty cool, but notice how at the end it kind of gets so thin that the volume is dropping out a bit. That's because this pulse width intensity is a little bit high. So I'll bring that down. (music playing) So you can get kind of a classic analog sound, a really warm sound, when you have the pulse width modulating like that. So it's a very cool feature. So next, let's shape the sound with the filter.
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