Helga is a polyphonic analog-modeling synthesizer VSTi,

Specs:

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 LFO's 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.

FOR WINDOWS

more info @
http://www.kiesel.is