Matrix LED

Pitch Stream

Pitch Stream is a pixel-grid performance visual in BeamTracer Audio Visualizers, built on WebGPU. Settings, audio modulation, presets, and tips.

Default demo track · live audio-reactive settings

Pitch Stream is a pixel-grid performance visual in the Matrix LED category. Open it from the left visualizer list, start an audio source, and use the settings panel to shape its response.

Open Pitch Stream

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

Tape Deck · Chart Recorder · Bass Scan · Seismograph

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
Scroll SpeedStreamSets how quickly scroll changes or moves.
Hue ShiftColorsMoves the color around the color spectrum.

Settings reference

Stream

SettingAvailable valuesWhat it changes
Scroll Speed4col/s–90col/sSets how quickly scroll changes or moves. Use Assign modulation to choose a source.
DirectionLEFTWARD, RIGHTWARD, DOWNWARD, UPWARDChooses the direction mode or style.
Column StyleFULL, METER, PULSEChooses the column style mode or style.
Low Pitch30Hz–2000HzControls low pitch; higher values increase the effect and lower values reduce it.
High Pitch500Hz–9000HzControls high pitch; higher values increase the effect and lower values reduce it.
Noise Floor0–0.5Sets how irregular or unpredictable the noise floor appears.
Flash Column On BeatOn / OffTurns flash column on beat on or off.

Colors

SettingAvailable valuesWhat it changes
Hue Shift0°–360°Moves the color around the color spectrum. Use Assign modulation to choose a source.

LED Panel

SettingAvailable valuesWhat it changes
LED Pitch6px–40pxControls LED pitch; higher values increase the effect and lower values reduce it.
Dot Gap0–0.6Sets the spacing between visible elements.
Glow0–2Sets the visible strength of glow.
Brightness0.2–2Sets the visible strength of brightness.
LED ProfileRGB PANEL, RED BADGEChooses the LED profile mode or style.
Unlit LED ColorColorSets the unlit LED color.

Audio

SettingAvailable valuesWhat it changes
Master Gain0x–5xSets how strongly the input signal affects master.
Smoothing0.01–0.8Balances immediate audio response against steadier motion.

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 bass for large fills or zoom and highs for small pixel detail; this reads clearly even on a distant screen.
  • Try assigning Bass to Scroll Speed, then compare Mid, High, and Volume while the demo track plays. The slider's live fill shows the signal reaching that control.