Helm is a free, cross-platform, polyphonic synthesizer with a powerful modulation system. Helm runs on GNU/Linux, Mac, and Windows as a standalone program or LV2/VST/VST3/AU plugin.
Features: - 32 voice polyphony - Interactive visual interface - Powerful modulation system with live visual feedback - Dual oscillators with cross modulation and up to 15 unison oscillators each - Sub oscillator with shuffle waveshaping - Oscillator feedback and saturation for waveshaping - 12 different waveforms - Blending between 12 or 24dB low/band/high pass filter - Low/Band/High Shelf filters - 2 monophonic and 1 polyphonic LFO - Step sequencer - Lots of modulation sources including polyphonic aftertouch - Simple arpeggiator - Effects: Formant filter, stutter, delay, distortion, reverb
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