Tremolo: Why Be Normal?

Tremolo (not to be confused with vibrato, which is what Fender amps call tremolo), was big in the 50s and 60s, especially in surf music-so it has a pretty stereotyped sound. But why be normal? Studio One's X-Trem goes beyond what antique tremolos did, so this week's Friday Tip delves into the cool rhythmic effects that X-Trem can create.

TREMOLOS IN SERIES The biggest improvement in today's tremolos is the sync-to-tempo function. One of my favorite techniques for EDM-type music is to insert two tremolos in series (Fig. 1).

Figure 1: These effects provide the sound in Audio Example 1. Note the automation track, which is varying the first X-Trem's Depth parameter.

The first X-Trem runs at a fast rate, like 1/16th notes. Square wave modulation works well for this if you want a chopped sound, but I usually prefer sine waves, because they give a smoother, more pulsing effect. The second X-Trem runs at a slower rate. For example, if it syncs to half-notes, X-Trem lets through a string of pulses for a half-note, then attenuates the pulses for the next half-note. Using a sine wave for the second tremolo gives a rhythmic, pulsing sound that's effective on big synth chords-check out the audio example.

PreSonus Audio Example

BUILD YOUR OWN WAVEFORM X-Trem's waveforms are the usual suspects: Triangle, Sine, Upward Sawtooth, and Square. But what if you want a downward sawtooth, a more exponential wave (Fig. 2), or an entirely off-the-wall waveform?

Figure 2: Let's have a big cheer for X-Trem's 16 Steps option.

This is where the 16 Steps option becomes the star (Fig. 2) because you can draw pretty much any waveform you want. It's a particularly effective technique with longer notes because you can hear the changes distinctly.

But for me, the coolest part is X-Trem's Etch-a-Sketch mode, because you can automate each step individually, choose X-Trem's Automation Write, and go crazy. Just unfold X-Trem's automation options, choose all the steps, add them to the track's automation, and draw away (Fig. 3).

Figure 3: Drawing automated step changes in real-time takes X-Trem beyond why be normal into something that may be illegal in some states.

Of course, if you just draw kind of randomly, then really, all you're doing is level automation. Where this option really comes into its own is when you have a basic waveform for one section, change a few steps in a different section and let that repeat, draw a different waveform for another section and let that repeat, and so on. Another application is trying out different waveforms as a song plays, and capturing the results as automation. If you particularly like a pattern, cut and paste the automation to use it repetitively.

And just think, we haven't even gotten into X-Trem's panning mode-similarly to its overachieving tremolo functions, the panning can do a lot more than just audio ping-pong effects. Hmmm seems like another Friday Tip might be in order.

LINK:	https://blog.presonus.com/index.php/2020/04/24/tremolo-why-be-normal/...
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