Spectrum Analyzer
Spectrum Analyzer is a precise audio-analysis display in BeamTracer Audio Visualizers, built on WebGPU. Settings, audio modulation, presets, and tips.
Spectrum Analyzer is a precise audio-analysis display in the Core Analytics category. Open it from the left visualizer list, start an audio source, and use the settings panel to shape its response.
Open Spectrum Analyzer
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.
Presets and styles
Phosphor Deck · Orbital Prism · Stereo Ember · Chrome Trace · Amber Portal · Matrix Curtain · Reflex · Bars · LED · Lumi · Mirror · Radial · Orbit 3D · Graph · Echo 3D
How do I share a factory look?
Open SHARE A LOOK, choose a preset from FACTORY LOOK, and select COPY LOOK LINK. The link opens that original preset with its audio reactions. Personal slider edits and music are not included. Use OPEN LOOK to preview what the recipient will see.
How do I share my edited look?
Open SHARE A LOOK, select PREPARE MY LOOK, then choose COPY MY LOOK LINK. The link includes your current visual settings, modulation routes, and generator settings. Music is not included. Use OPEN MY LOOK to preview the result. Prepare a new link after making more edits.
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 |
|---|---|---|
| Echo Rows | 3D Echo | Sets how many earlier moments trail behind the live spectrum. |
| Trail Depth | 3D Echo | Sets how far back the trail stretches. |
| Echo Speed | 3D Echo | Sets how quickly sound travels back through the trail. A change takes effect from that moment on. |
| Echo Fade | 3D Echo | Sets how soon the trail fades out. Higher values fade it closer to the live spectrum. |
| View Angle | 3D Echo | Turns the view all the way around the field. Dragging left or right on the visualizer changes it too. |
| View Height | 3D Echo | Raises or lowers the viewpoint, from nearly level to looking straight down on the trail. Dragging up or down on the visualizer changes it too. |
| Outline Opacity | 3D Echo | Sets how bright the outlines are. Available when Outline Mode is on. |
Settings reference
Core
| Setting | Available values | What it changes |
|---|---|---|
| Band Slicing | DISCRETE, 1/24 OCT, 1/12 OCT, 1/6 OCT, 1/3 OCT, FULL OCT, LINE | Chooses the band slicing mode or style. |
| Bar Spacing | 0–0.6 | Sets the spacing between visible elements. |
| LED Segments | 8–96 | Sets how many divisions form the visible shape. |
| LED Gap | 0.1–0.7 | Sets the spacing between visible elements. |
| Grow From | BOTTOM, TOP, LEFT, RIGHT | Chooses the grow from mode or style. |
| Scale Labels | OFF, BOTTOM, TOP | Chooses the scale labels mode or style. |
| Mirror (Center-Out) | On / Off | Turns mirror (center-out) on or off. |
| Reflex Reflection | On / Off | Turns reflex reflection on or off. |
| Round Bar Caps | On / Off | Turns round bar caps on or off. |
| Lumi Bars | On / Off | Turns lumi bars on or off. |
| LED Bars | On / Off | Turns LED bars on or off. |
| Background Opacity | 0–1 | Sets how solid the dark plate behind the bars is. At 1 the bars sit on the plate; at 0 only the bars and their glow remain over whatever is behind the visualizer. |
Peaks
| Setting | Available values | What it changes |
|---|---|---|
| Show Peaks | On / Off | Shows or hides peaks. |
| Hold Time | 0ms–2000ms | Sets how long hold remains visible. |
| Gravity | 0.5–8 | Sets the downward pull on moving elements. |
| Age Fade | On / Off | Turns age fade on or off. |
| Peak Size | 0.004–0.04 | Sets how thick the peak caps are. With LED Bars on, caps grow in whole LED cells, so the smallest sizes all show one cell. |
Radial
| Setting | Available values | What it changes |
|---|---|---|
| Radial Mode | On / Off | Turns radial mode on or off. |
| Spin Speed | -3–3 | Sets how quickly spin changes or moves. |
| 3D Rotation | On / Off | Turns 3d rotation on or off. |
| 3D Tilt | 0–1 | Sets the 3d tilt of the visible composition. |
| Inner Ring | OFF, LINE, VU ARCS | Chooses the inner ring mode or style. |
| Ring Thickness | 0.01–0.15 | Sets the visible ring thickness. |
| Inner Radius | 0.15–0.5 | Sets the visible inner radius. |
3D Echo
| Setting | Available values | What it changes |
|---|---|---|
| 3D Echo Trail | On / Off | Turns the bars or the line graph into a 3D field: each earlier moment of the spectrum trails behind the live one and fades into the distance. |
| Echo Rows | 8–96 | Sets how many earlier moments trail behind the live spectrum. Use Assign modulation to choose a source. |
| Trail Depth | 0.25–1.5 | Sets how far back the trail stretches. Use Assign modulation to choose a source. |
| Echo Speed | 6 rows/s–60 rows/s | Sets how quickly sound travels back through the trail. A change takes effect from that moment on. Use Assign modulation to choose a source. |
| Echo Fade | 0–1 | Sets how soon the trail fades out. Higher values fade it closer to the live spectrum. Use Assign modulation to choose a source. |
| View Angle | -180°–180° | Turns the view all the way around the field. Dragging left or right on the visualizer changes it too. Use Assign modulation to choose a source. |
| View Height | 5°–85° | Raises or lowers the viewpoint, from nearly level to looking straight down on the trail. Dragging up or down on the visualizer changes it too. Use Assign modulation to choose a source. |
| Outline Mode | On / Off | Draws the 3D trail as outlines only: see-through bar edges, or just the line of each moment with Line band slicing. |
| Outline Opacity | 0–1 | Sets how bright the outlines are. Available when Outline Mode is on. Use Assign modulation to choose a source. |
Frequency
| Setting | Available values | What it changes |
|---|---|---|
| Min Frequency | 20Hz–500Hz | Sets the lowest audio frequency shown. |
| Max Frequency | 2000Hz–22000Hz | Sets the highest audio frequency shown. |
| Scale | LOG, MEL, BARK, LINEAR | Chooses the scale mode or style. |
Colors
| Setting | Available values | What it changes |
|---|---|---|
| Gradient | SOLID, CLASSIC, PRISM, RAINBOW, EMBER, STEEL, MATRIX, AMBER, CUSTOM | Chooses the gradient mode or style. |
| Solid Color | Color | Sets the solid color. |
| Base Color | Color | Sets the base color. |
| Mid Color | Color | Sets the mid color. |
| Tip Color | Color | Sets the tip color. |
| Color By Level | On / Off | Turns color by level on or off. |
| Bar Glow | 0–1 | Sets the visible strength of bar glow. |
Audio
| Setting | Available values | What it changes |
|---|---|---|
| Sensitivity | 0.5–2 | Sets how strongly the input signal affects sensitivity. |
| Smoothing | 0–0.95 | Balances immediate audio response against steadier motion. |
Idle Banner
| Setting | Available values | What it changes |
|---|---|---|
| Idle Text Banner | On / Off | Turns idle text banner on or off. |
| Banner Text | Text | Sets the text used for banner text. |
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
- For a trail of glowing spectrum lines, choose Echo 3D, set Band Slicing to Line and turn on Outline Mode. A Solid gradient gives it a single-color instrument look.
- Drag the visualizer to orbit the 3D echo; the View Angle and View Height sliders follow when you let go.
- Try assigning Bass to Echo Rows, then compare Mid, High, and Volume while the demo track plays. The slider's live fill shows the signal reaching that control.