Signal O is a single oscillator VST synthesizer created with the JUCE library for C++. There are four different waveforms to choose from: Sine, Triangle, Saw and Square. The synthesizer features an ADSR envelope generator submodule alongside a visual representation of the envelope's shape. It also features a submodule with a low pass, high pass, and bandpass filter.
gain knob
LFO for pitch and filter modulation