GD Audio Analyzer

Real-time audio analysis toolkit for Godot 4.5+.

Features

• Real-time FFT audio analysis with frequency bands
• Beat detection with configurable sensitivity
• Audio intensity analysis and smoothing
• Signal-based event system

Quick Start

1. Extract to addons/ folder
2. Enable in Project Settings > Plugins
3. Add AudioStreamPlayer and AudioAnalyzer nodes
4. Connect audio player to analyzer

@onready var audio_analyzer = $AudioAnalyzer
func _ready():
    audio_analyzer.audio_player = $AudioStreamPlayer
    audio_analyzer.beat_detected.connect(_on_beat_detected)
    audio_analyzer.frequency_band_changed.connect(_on_frequency_changed)

func _on_beat_detected(intensity: float):
    print("Beat detected with intensity: ", intensity)

func _on_frequency_changed(band_index: int, intensity: float):
    print("Band ", band_index, " intensity: ", intensity)

Use Cases

Music Visualizers

• Create audio-reactive visual effects that respond to different frequency ranges
• Build spectrum analyzers with real-time frequency band data
• Sync visual elements to beat detection for rhythm games

Game Audio Integration

• Trigger particle effects or screen shake on bass drops
• Adjust lighting intensity based on audio energy
• Create dynamic environments that react to background music

Interactive Applications

• Voice-controlled interfaces using frequency analysis
• Audio-reactive user interfaces and menus
• Real-time audio feedback for music production tools

Creative Projects

• Procedural art generation based on audio input
• Audio-synchronized animations and transitions
• Interactive installations responding to ambient sound

AudioAnalyzer

Core component that analyzes audio streams and emits signals for visualization.

Key Properties:

• audio_player: AudioStreamPlayer to analyze
• num_bands: Number of frequency bands (1-64)
• sensitivity: Beat detection sensitivity
• beat_threshold: Threshold for beat detection

Signals:

• frequency_band_changed(band_index: int, intensity: float)
• beat_detected(overall_intensity: float)
• shake_triggered(shake_intensity: float)

License

MIT License - see LICENSE file.