TrapezoidSynth is a free software synthesizer developed by Uhhyou. Available format(s): VST3 for Windows 64b, macOS, Linux.
Note: Currently Linux build doesn’t display GUI due to some problem related to VSTGUI. For Linux, LV2 version is available at https://github.com/ryukau/LV2Plugins.
Note: I don’t have mac so macOS build is not tested. If you find bug, please report it to https://github.com/ryukau/VSTPlugins.
TrapezoidSynth is a monophonic synthesizer equipped with two trapezoid oscillator which is piecewise function of PTR ramp function. In other words, it’s just a fancy version of tri-pulse oscillator:
- Equipped with 2 trapezoid oscillator.
- Pitch drift with white noise for oscillator 1.
- Slope and pulse width controls for trapezoid shape.
- Phase modulation to oscillator 1. Feedback knob is just another phase modulation.
- Up to 8 order low-pass filter with saturation.
- Can be modulate filter cutoff with Oscillator 1 output.
- 2 ADSR envelopes for output gain and filter. Filter envelope can be used to modulate oscillator pitch in octave.
- 2 AD envelopes for various modulation.
- Retrigger control for all envelopes.
- 1 LFO for oscillator 1 and filter cutoff.
- 3 types of pitch slide. Always, only when sustain, reset to 0 Hz when first note on or last note off.
- Pitch slide time offset between oscillator 1 and 2.
LV2 version is used in demo video. Only difference between VST3 version and LV2 version is small details in GUI.
{See video at top of page}
https://ryukau.github.io/VSTPlugins/