>Step by step

1. Wobble bass

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Once you’ve opened Logic, add the ES2 plugin to an instrument channel. The default sound is not what we want here. So under the ‘User Default’ dropdown menu select ’12 Tutorial settings’ and then select ‘Analog Saw Initialized’. This basic sawtooth wave will be our foundation sound. 2

Open up a channel EQ, hit a low note on your MIDI keyboard and take a look at the waveform of a sawtooth wave. You’ll visually see the progression of the harmonics on the frequency spectrum. Our job today is to alternately filter between the lower and higher harmonics to create the wobble. 3

The wobble effect is essentially making use of low pass filters to mask the higher frequencies in the synth sound we’ll create. In the filter pane of the ES2 synth (the circular dial with numbered sides 1 and sides 2) we’ll be using filter 2’s cutoff to achieve our goal. 4

If you, again, hold down a key on your MIDI keyboard, while turning the cutoff filter down too, you’ll hear the higher frequencies being masked and will see them disappear in real-time on your channel EQ. Push the cutoff back up and the higher frequencies will return. 5

The effect we’ll create is basically just a faster version of this to create the wobble sound! And of course we’ll automate it rather than doing it manually. We’re going to use an LFO (Low Frequency Oscillator) to essentially act as a remote control for the cutoff parameter. 6

Using LFO 2, you can set the oscillator rate by frequency but also, for our purposes, by grid type (grid 1/4 in my case). We then need to switch the LFO target from ‘Off’ to ‘Cutoff 2’ to ensure the LFO controls what we want it to.

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After the target has been set correctly, change the source from ‘LFO 1’ to ‘LFO 2’. Then we get to the fun part! Raise the slider to the right of the LFO target and source parameters and this will change the amount by which the LFO will affect the cutoff.

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You’ll now hear the LFO automatically shifting the cutoff filter. If you raise the slider to its highest point, it will maximise the effect. You can also adjust the ultimate range of the cutoff filter by going back to the filter pane.

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That’s your basic wobble effect using a single type of sound wave. However, there is plenty of room for experimentation beyond the typical sound wave types. Let’s go back to Osc 1 and switch from sawtooth to sine wave. If we right click on sine, we’ll see a whole bunch of digi wave options to expand our palette of sound.

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If there are Massive users here, these options are very similar to the wave tables in that synth. They go over and beyond the simple sine, square, triangle and sawtooth waves giving your synth a whole lot more character.

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To go even further with sound design, you can use the settings on the right pane of the synth. You can add distortion to the sound or make a sound hard rather than soft for example. I recommend just having a go at creating sounds and saving anything you like the sound of as a preset.

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You can also make the tone of the synth brighter or darker as fits the type of overall soundscape of the track you’re working on. All of this experimentation might inspire a new track immediately, or you might come back to presets you save at a later time when the right track comes along!