EarthQuaker Devices The Wave Transformer Eurorack Module Transfiguration Oscillator Effects Pedal

The EarthQuaker Wave Transformer is an all-analog oscillator effects pedal with more than 8 octaves of accurate pitch tracking. It features 7 simultaneous wave outputs that also include a unique complex output.

The transform control on this pedal changes from a basic waveform through many iterations and forms into a complex, gnarled mass of audio mutations at the output. Using a variety of permutations, you can make several variations using this simple analog circuit with Hard Sync, Soft Sync, Linear FM and Exponential FM. When need be, you can mute the source waveform to make use of the pedal’s circuit as a harmonic gate or VCA. The pedal even features a Shape Insert which lets you transform the external oscillations and the audio sources at a modular level.

The Sub Source generates sub octaves by selecting either the signal patched on to the Shape Insert jack, or the internal oscillator. The Complex, Sub Pulse, and Sub Square outputs are affected by this action. It is recommended to leave this set to INT unless there’s a need for tracking an external source.

This control selects between 1 octave down, 2 octaves down, or mutes the sub octaves. This control directly affects the Complex and Sub Square outputs. This control does not affect the Sub Pulse output since it is fixed to 1 octave down.

This control features chooses between muting and unmuting source wave for complex outputs.

Spanning approximately 7 octaves, Tune control allows the course control of the oscillator’s pitch.

This control feature fine-tunes the control of the oscillator’s pitch and spans a little more than 1 octave.

Spanning approximately 25 cents, the µTune (Micro Tune) control is the oscillator’s ultra-fine control.

The pulse width control of the pedal varies the pulse width of the rectangle output between 0 and 100 percent. It remains silent at 0 and 100 percent.

This control feature changes the complex output from a triangle wave into a strange and complex harmonic waveform through levels of iterations. It uses an asymmetrical multi-differential audio transmutation circuit for the process.

Hard Sync accepts plus minus 5 volts and uses the incoming signal to change the phase of the oscillator to a particular phase, depending on the polarity of the incoming pulses. Soft Sync accepts plus minus 5 volts. The pulses at this input cause the transient of the triangle wave to change direction prematurely, which causes the oscillation period to be a multiple of the pulse width of the incoming signal. V Octave accepts traditional volt or octave CV to control pitch. Shape Insert accepts plus minus 5 volts and allows the insertion of another waveform or modular-level signal to be mutated by the Transform circuit. The new waveform will change the results heard at the Complex output.  Lin FM accepts plus minus volts audio signals and allows linear frequency modulation. Expo FM accepts plus minus 10 volts and allows exponential frequency modulation. Pulse Width CV input accepts plus minus volts. It allows control of the pulse width of the Rectangle output from 0-100 percent duty cycle. Transform CV input accepts 0-5 volts and allows control of the Transform circuit. This CV input is added to the Transform panel control. Make use of the panel control to set the default Transformation from which you would like to modulate. µTune CV input accepts plus minus 10 volts and is an exponential CV input that lets you make precise modulation of the oscillator pitch. This input can be used to sequence accurate pitch bends and add pitch instability with a random voltage source, or sequencing tiny changes in pitch for microtonal or drone music.

 Sineplus accepts plus minus 5 volts while Triangle accepts plus minus 5 volts, and Saw accepts plus minus 5 volts. Complex accepts up to plus minus 10 volts. Complex is a strange and novel output that varies between a simple waveform which is usually a triangle, unless you patch a signal into the Shape Insert jack, and a complex transformation of the harmonic structure of the original waveform. Complex contains a unique mixture of the fundamental frequency, odd order harmonics, even order harmonics, and subharmonics. Whether the sub harmonics are derived from one octave down, two octaves down, or are muted altogether, is determined by the Sub Octave panel control. Hence, it varies from a simple waveform to a silhouette of your pet cat looking at you as you react to a ‘present’ that it left for you on the kitchen countertop. Rectangle accepts plus minus 5 volts and the pulse width of this waveform is determined by the Pulse Width panel control and its associated CV input. Sub Pulse accepts plus minus 5 volts and represents 25 percent duty cycle sub octave signal that is fixed to 1 octave lower than the source signal. Sub Square accepts plus minus 5 volts and is a sub octave square wave that is either 1 or 2 octaves down from the source signal, which depends on the Sub Octave setting.