Helga

Two Low Frequency Oscillators (LFO)

• Generates sine, up and down ramps, a square wave and a random waveform.
• Frequency is midi syncable as well as syncable to an external pulse.

Two alias-free Oscillators (VCO)

• Generates any mix of a ramp and a variable duty cycle pulse wave.
• The pulse wave duty cycle can be modulated with an LFO or an ENV generator.
• The output of both VCO's can be integrated to generate different waveforms.
• Sync and ring modulation.

Envelope generators (ENV)

• ADSR type (Attach, Decay, Sustain, Release).
• Velocity and aftertouch sensitive.

Filter

• Four-pole resonant low-pass/high-pass filter.
• Has its own ENV generator for cutoff modulation.
• Cutoff frequency can be further modulated with the LFOs and can track the keyboard pitch.

Source Mixer

• White-noise source.
• External input.

Keyboard processor

• 32 voice polyphony max.
• Polyphonic and unison mode with portamento.
• Pitchbend and modulation wheels.

Delay Effect

• LFO modulated.