polyKB is a polyphonic subtractive synthesizer based on two waveform morphing, alias-free oscillators and a self-oscillating 4-pole low-pass filter.

The oscillators make a large part of the sound of this synthesizer but the filter, recreating a standard analog chip of the '80s, with the help of a very complete modulation section, allow the polyKB to create "incredible and warm sounds, from gorgeous bass to slow evolving pads, through aggressive leads and thin crystal keyboards, without forgetting a wide range of special effects".

The modulation section of polyKB acts like a matrix with five dedicated sources (LFO, ADSR, VCO, NOISE, VELOCITY) and five dedicated destinations (VCO 1 and 2 pitch, VCO 1 and 2 waveform, VCF frequency). To increase the sound design possibilities, six menus have being added, two for the sources, four for the destination, with which a wide range of modules can be chosen (Velocity, sequencer outputs, LFO freq, Filter res, VCO levels, to name but a few).

polyKB also features a powerful polyphonic sequencer. The sequencer can record and play 8 voices independently as well as the pitch and the velocity. To control the sequence, a 2 to 128 steps clock system allows a wide range of rhythms and patterns. Of course the sequencer outputs can be assigned as a source of modulation.

polyKB offers:

• Two aliasing-free morphing oscillators: from triangle to pulse, through saw.
• One 4-poles, low-pass, self-oscillating filter.
• Two envelope generators (ADSR).
• Two MIDI-synced LFOs.
• One MIDI-synced Sample and Hold.
• One 128-steps polyphonic sequencer.
• One arpeggiator.
• Chorus and delay effects.
• Mono/Unison/Poly playing mode with up to 16 voices of polyphony.
• All parameters are MIDI controllable.

New in v1.0.1

• Stuck Notes fixed.
• Exceptional crashes when deleting presets : Fixed.
• Export preset anomalies under certain circumstances : Fixed.
• VCO2 & Noise Modulation not working properly when mod wheel was On : Fixed.
• GUI opening causing active notes stop : Fixed.
• Changing Polyphony could cause stuck notes : Fixed.
• Hold Function : GUI now reflects the current settings.
• Modulation Source 2 incorrect behaviour : Fixed.
• Deleting Midi Controller assignation : Mode added ( Enter -1 or None ).
• Envelope Keyboard tracking is now working properly.
• White/Pink noise switch : Now working properly.
• Noise level : Now working smoothly when several notes, or chords, are played simultaneously.