LFO | Straight

The LFO | Straight is part of Umbrella's "Cyclic Oscillations" bundle which consists of 6 modules aimed at CV processing. The bundle has 4 low frequency oscillators and two cv-mixers.

The LFO's in Umbrella's Cyclic Oscillations bundle are morphable low-frequency oscillator's, each with two waveforms and a sample and hold. The LFO's are divided into four groups: smooth, sharp, spike and straight. Referring to the contours of the waveforms. Since it's a morphable LFO the shapes seamlessly blend into each other. While at position 0, 1 and 2 the shapes are plain. All LFO's have four output's. These outputs divide the main frequency by 1, 2, 3 and 4. Basically the LFO produces cv modulation at four different speeds. Next to that the LFO can be synced to a clock divider, making it possible to sync the duty-cycle of the waveform to a specific BPM or your DAW.

Intro & Tutorial Video: https://www.youtube.com/watch?v=MRSKk_TkygU

The shapes of the LFO's are:

  • Smooth: triangle > sine > smooth random
  • Sharp: saw > descending triple saw > polyrhythimic saw
  • Spike: sharktooth > heartbeat > descending random spikes
  • Straight: 10%-square > 50%-square > traditional sample & hold

The controls and their functions:

Reset: When triggered the cycle of the LFO waveform resets to it's start point.

Clock: When a clock signal is detected by this jack the LFO stops running in free-mode and switched to synced mode. The "frequency" knob will now output time divisions instead of Herz.

Frequency: With this knob you can determine the speed of the oscillator either in Hz or ms (0,01 Hz to 30 Hz, yes to audio rates!). When a jack is connected to clock the speed is synced and the knob displays time divisions: 1/8, 1/6, 1/4, 1/3, 1/2, 2/3, 1/1, 1,5/1, 2/1, 3/1, 4/1, 6/1 and 8/1.

Shape: This knob sets the shape of the oscillator. The shapes are displayed around the knob. As mentioned before the shapes morph in each other. There are 8 shapes in the bundle and 4 different sample & hold's.

CV attenuator's: This knob controls the amount of CV passed through to the frequency knob and the shape knob located above the attenuator knob, -100% to 100%.

CV 1 and CV 2 in: The CV-in's are the input jacks to attenuate the knobs. CV 1 controls the frequency knob and CV 2 the shape knob.

Out 1:1 to 1:4: These are the outputs for the LFO at our different times/speeds. The times are calculated from the frequency knob, this is 1. So, if the frequency knob is set at 4/1 the output of 1:4 will be at 1/1, 2/1 at 1:4 will output 1/2 and so on. The leds next to the output jacks display the speed for reference.

Why is this bright? With these four outputs in combination with the morphable waveforms you are able to create a super-super-wide-variety of CV modulation with just one module. Combining one of Umbrella's LFO with our MIX-processor and/or MIX-crossfader results in: super-super-wide-variety^2022