Core Analytics

Spectrum Analyzer

Spectrum Analyzer is a precise audio-analysis display in BeamTracer Audio Visualizers, built on WebGPU. Settings, audio modulation, presets, and tips.

Open Spectrum Analyzer ↗
Default demo track · live audio-reactive settings

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

  1. Start the demo track, choose a local audio file, or enable a live input.
  2. Try a preset or style first, then open the section for the part of the image you want to change.
  3. On a control with Assign modulation, open the source picker, choose a signal, and watch the slider's live fill.
  4. 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 controlSectionWhat the route changes
Echo Rows3D EchoSets how many earlier moments trail behind the live spectrum.
Trail Depth3D EchoSets how far back the trail stretches.
Echo Speed3D EchoSets how quickly sound travels back through the trail. A change takes effect from that moment on.
Echo Fade3D EchoSets how soon the trail fades out. Higher values fade it closer to the live spectrum.
View Angle3D EchoTurns the view all the way around the field. Dragging left or right on the visualizer changes it too.
View Height3D EchoRaises 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 Opacity3D EchoSets how bright the outlines are. Available when Outline Mode is on.

Settings reference

Core

SettingAvailable valuesWhat it changes
Band SlicingDISCRETE, 1/24 OCT, 1/12 OCT, 1/6 OCT, 1/3 OCT, FULL OCT, LINEChooses the band slicing mode or style.
Bar Spacing0–0.6Sets the spacing between visible elements.
LED Segments8–96Sets how many divisions form the visible shape.
LED Gap0.1–0.7Sets the spacing between visible elements.
Grow FromBOTTOM, TOP, LEFT, RIGHTChooses the grow from mode or style.
Scale LabelsOFF, BOTTOM, TOPChooses the scale labels mode or style.
Mirror (Center-Out)On / OffTurns mirror (center-out) on or off.
Reflex ReflectionOn / OffTurns reflex reflection on or off.
Round Bar CapsOn / OffTurns round bar caps on or off.
Lumi BarsOn / OffTurns lumi bars on or off.
LED BarsOn / OffTurns LED bars on or off.
Background Opacity0–1Sets 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

SettingAvailable valuesWhat it changes
Show PeaksOn / OffShows or hides peaks.
Hold Time0ms–2000msSets how long hold remains visible.
Gravity0.5–8Sets the downward pull on moving elements.
Age FadeOn / OffTurns age fade on or off.
Peak Size0.004–0.04Sets the visible peak size.

Radial

SettingAvailable valuesWhat it changes
Radial ModeOn / OffTurns radial mode on or off.
Spin Speed-3–3Sets how quickly spin changes or moves.
3D RotationOn / OffTurns 3d rotation on or off.
3D Tilt0–1Sets the 3d tilt of the visible composition.
Inner RingOFF, LINE, VU ARCSChooses the inner ring mode or style.
Ring Thickness0.01–0.15Sets the visible ring thickness.
Inner Radius0.15–0.5Sets the visible inner radius.

3D Echo

SettingAvailable valuesWhat it changes
3D Echo TrailOn / OffTurns 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 Rows8–96Sets how many earlier moments trail behind the live spectrum. Use Assign modulation to choose a source.
Trail Depth0.25–1.5Sets how far back the trail stretches. Use Assign modulation to choose a source.
Echo Speed6 rows/s–60 rows/sSets how quickly sound travels back through the trail. A change takes effect from that moment on. Use Assign modulation to choose a source.
Echo Fade0–1Sets 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 Height5°–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 ModeOn / OffDraws the 3D trail as outlines only: see-through bar edges, or just the line of each moment with Line band slicing.
Outline Opacity0–1Sets how bright the outlines are. Available when Outline Mode is on. Use Assign modulation to choose a source.

Frequency

SettingAvailable valuesWhat it changes
Min Frequency20Hz–500HzSets the lowest audio frequency shown.
Max Frequency2000Hz–22000HzSets the highest audio frequency shown.
ScaleLOG, MEL, BARK, LINEARChooses the scale mode or style.

Colors

SettingAvailable valuesWhat it changes
GradientSOLID, CLASSIC, PRISM, RAINBOW, EMBER, STEEL, MATRIX, AMBER, CUSTOMChooses the gradient mode or style.
Solid ColorColorSets the solid color.
Base ColorColorSets the base color.
Mid ColorColorSets the mid color.
Tip ColorColorSets the tip color.
Color By LevelOn / OffTurns color by level on or off.
Bar Glow0–1Sets the visible strength of bar glow.

Audio

SettingAvailable valuesWhat it changes
Sensitivity0.5–2Sets how strongly the input signal affects sensitivity.
Smoothing0–0.95Balances immediate audio response against steadier motion.

Idle Banner

SettingAvailable valuesWhat it changes
Idle Text BannerOn / OffTurns idle text banner on or off.
Banner TextTextSets 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.