Partial Oscillator

Manufacturer: R_Ware

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R_WARE enters the VM ecosystem with the PARTIAL OSCILLATOR!

Partial Oscillator is a highly flexible and modulation-friendly SINE oscillator that can be used as a building block for an additive synthesizer or a complex oscillator. The internal SINE oscillator is very clean even up to the Nyquist frequency to allow for crazy modulation. Each CV input can and should be modulated at audio-rate to quickly dial in complex tones.

Partial Oscillator is divided into sections according to its internal signal flow:

  • The PITCH section takes a regular 1V/oct signal to set the base frequency. The OCT and FINE knobs can then be used to offset the pitch. At the minimum position the OCT knob switches into LFO mode. This let's Partial Oscillator oscillate at BPM-synced tempos that can be set with the FINE knob.
  • The FREQ MOD section takes care of all sorts of frequency modulation. The LIN input provides LINEAR FM, the EXP input provides EXPONENTIAL FM, and with the THROUGH-ZERO switch on the left THROUGH-ZERO FM is enabled. When a regular oscillator's frequency reaches 0Hz or even goes below the oscillator stops, but with THROUGH-ZERO mode enabled the negative frequencies are folded back into the positive range. This is especially useful for pitch-stable LINEAR THROUGH-ZERO FM.
  • The PARTIAL MOD section takes care of handling the PARTIAL PROPERTIES. Partial Oscillator can oct as one PARTIAL - one harmonic of a complex signal. Therefore the PARTIAL NUMBER knob lets you set the exact PARTIAL NUMBER from 0 (DC offset) to 64. The set PARTIAL NUMBER can then be modulated step-wise with the #-CV input, modulated with a continuous offset by OFFS CV, or modulated by multiplying the PARTIAL NUMBER with MULT CV.
  • The PHASE MOD section takes care of manipulating the oscillator's PHASE. The big PHASE knob lets you offset the oscillator's phase continuously from 0 degree to 360 degree - a full wave-cycle. You can also use a CV signal (audio-rate works great here) into the PM input to PHASE MODULATE the oscillator. Additionally you can SYNC the oscillator's phase to a trigger at the SYNC input. Finally, Partial Oscillator enables you to turn off the internal PHASE accumulator and literally freeze the oscillator. It does no longer oscillate on its own then and can be moved with the MANUAL PHASE knob or with signal at the PM input. It practically resembles a 0Hz oscillator at this point. Use the FREEZE mode to turn Partial Oscillator into a waveshaper/wavefolder or use a manipulated ramp-up signal to drive the PHASE for phase-distortion synthesis!
  • The AMP section handles the output signal. Here you have the chance to modulate the amplitude of the output signal via AM or RM. With AM the output is muted below 0V at the AM input, whereas with RM the output is inverted for negative CV signals. The oscillator outputs a steady level of +/-5V when the AM input is not plugged in. As soon as this input is plugged in, the amplitude is only controlled by the corresponding CV signal. In order to protect you on your sound journeys through frequencies and phases, Partial Oscillator features a nice saturator in its output stage. the saturator is inactive in the range of +/-5V to guarantee a pristine, clean, and aliasing-free output signal. From +/-5V to +/-10V a gentle soft clipper is applied so that the output never exceeds +/-10V.

Each section has a dedicated quick-help/info tooltip that can be invoked by hovering over the little 'i' icon in the bottom left corner of each section. This tooltip briefly describes the section, its function and usage, and the available controls and IOs.