Godot Synth Engine

A powerful and flexible synthesizer engine for Godot 4, providing virtual analog synthesis with extensive modulation capabilities and audio effects.

Features

• Virtual Analog Synthesis: High-quality oscillators with multiple waveform types
• Extensive Modulation System: ADSR envelopes, LFOs, velocity tracking, keyboard tracking
• Rich Effects Processing: Filters, delays, distortion, reverb and more
• Fully Scriptable: Complete control from GDScript
• Polyphonic Playback: Support for multiple simultaneous voices
• Preset System: Create and save your own sound presets

Basic Usage

extends Node

@export var sound: VASynthConfiguration

func _ready():
    # Create a synth player
    var synth = AudioSynthPlayer.new()
    synth.configuration = sound
    add_child(synth)
    
    # Play a note
    var context = synth.get_context()
    context.note_on(60, 0.8)  # MIDI note 60 (C4) with velocity 0.8
    
    # Stop the note after 1 second
    await get_tree().create_timer(1.0).timeout
    context.note_off(context.absolute_time)

Most of the synth configuration can be done directly in the Godot Editor using the inspector. Detailed tutorials with images will be added soon.

Documentation Sections

• Synthesis Engines
• Modulation System
• Effects

Roadmap

• Virtual analog engine
• Chord Engine
• 4 OP FM Engine
• Formant Engine
• Wavetable Engine
• Gold braided cable emulation
• Custom editor window for testing sounds in editor
• Single track step sequencer module
• “Curve” modulation source
• LFO lookup table caching
• SIMD optimizations
• Sound caching and async preloading
• Warmer tone slider