Background Reactor
Background Reactor is an ambient full-canvas background in BeamTracer Audio Visualizers. Shape its response in your browser with settings, audio modulation, presets, and tips.
Background Reactor is an ambient full-canvas background in the Backgrounds category. Open it from the left visualizer list, start an audio source, and use the settings panel to shape its response.
Open Background Reactor
Launch the visualizer with its matching left-nav entry selected.
Quick start
- Start the demo track, choose a local audio file, or enable a live input.
- Try a preset or style first, then open the section for the part of the image you want to change.
- On a control with Assign modulation, open the source picker, choose a signal, and watch the slider's live fill.
- Use Reset to Defaults whenever you want to return to the original look.
Audio modulation
On a control with Assign modulation, select the activity icon to open Modulate with. Choose a named source, or choose — None to leave the control unmodulated. After you assign one, its name appears below the slider; select that name to edit the route, or use Clear modulation to remove it. The slider track shows the live signal reaching the control.
| Modulated control | Section | What the route changes |
|---|---|---|
| Intensity | Material | Sets the strength of the selected visual effect. |
| Zoom | Material | Sets the visual zoom. |
| Warp | Material | Adds a gentle rippling wobble to the whole picture; higher values bend the pattern more. |
| Hue Shift | Colors | Moves the color around the color spectrum. |
| Speed | Animation | Sets how quickly speed changes or moves. |
| Rotation | Animation | Sets the rotation of the visible composition. |
Settings reference
Material
| Setting | Available values | What it changes |
|---|---|---|
| Intensity | 0.25x–2x | Sets the strength of the selected visual effect. Use Assign modulation to choose a source. |
| Zoom | 0.1x–10x | Sets the visual zoom. Use Assign modulation to choose a source. |
| Warp | 0–1 | Adds a gentle rippling wobble to the whole picture; higher values bend the pattern more. Use Assign modulation to choose a source. |
| Pixelation | 1–100 | Breaks the picture into larger blocks as the value rises; 1 leaves it smooth with no pixelation. |
Colors
| Setting | Available values | What it changes |
|---|---|---|
| Hue Shift | 0°–360° | Moves the color around the color spectrum. Use Assign modulation to choose a source. |
| Hue Animation | On / Off | Turns hue animation on or off. |
| Hue Speed | 0.01–1 | Sets how quickly hue changes or moves. |
Audio
| Setting | Available values | What it changes |
|---|---|---|
| Master Gain | 0x–3x | Sets how strongly the input signal affects master. |
| Bass Intensity | 0x–3x | Sets the visible bass intensity. |
| Mid Intensity | 0x–3x | Sets the visible mid intensity. |
| High Intensity | 0x–3x | Sets the visible high intensity. |
| Smoothing | 0.01–0.8 | Balances immediate audio response against steadier motion. |
Animation
| Setting | Available values | What it changes |
|---|---|---|
| Speed | 0.1x–2x | Sets how quickly speed changes or moves. Use Assign modulation to choose a source. |
| Rotation | -1–1 | Sets the rotation of the visible composition. Use Assign modulation to choose a source. |
Some controls appear only after you enable a related mode or style. The settings panel always reflects the options available for the current selection.
Tips for a better audio visualization
- Use lower modulation amounts than you would for a foreground effect so the background supports the mix instead of competing with it.
- Try assigning Bass to Intensity, then compare Mid, High, and Volume while the demo track plays. The slider's live fill shows the signal reaching that control.