F_AURAZ

F_AURAZ – Spectral Waterfall Display

F_AURAZ is a live spectral waterfall visualizer. It converts incoming audio into color-coded frequency displays over time, allowing you to see how a sound evolves spectrally.

Features

• Real-time FFT-based frequency analysis
• 10 switchable color palettes via knob
• Linear and logarithmic frequency scaling
• Adjustable update speed
• Brightness control for overall intensity
• Pause function to freeze the display

Controls

• In (Audio Jack) – audio input to be analyzed
• Pause (Button) – freezes the waterfall scroll
• Speed (Slider) – controls how often the display updates (1 = fastest)
• Scale (Switch) – toggles between linear and logarithmic frequency scaling
• Color (Knob) – selects one of 10 color palettes
• Brightness (Knob) – adjusts overall color brightness (0 = dark, 2 = very bright)

Color Palettes

Use the Color knob to select from the following palettes:

1. Aurora – soft greens, blues, purples
2. Rainbow – full-spectrum HSB color
3. Heatmap – red intensity with hot glow
4. Fire – dark reds to white flame
5. Ice – cold blues and frozen tones
6. Monochrome – grayscale intensity
7. Toxic – greenish glow with cyan shadows
8. Plasma – high-contrast, oscillating colors
9. Sepia Glow – warm vintage tones
10. Cyberpunk – neon purple and red accents

Tips

• Use logarithmic scale for a view that matches musical pitch perception.
• Lower Speed = slower scroll = more detail per moment.
• Pause the display to inspect fine details or harmonics.
• Use the Brightness knob to fine-tune visual output for your screen or aesthetic.

Patch Ideas

• Use with oscillators to view harmonic structure
• Visualize filter sweeps or modulation effects
• Connect to complex CV/audio sources to create visual art

Technical Notes

• FFT size: 512 points (fixed)
• Waterfall resolution: 512 × 256 pixels
• Runs in real-time in ProcessSample()