Big Bang Theory

Big Bang Theory is a space-themed audio-reactive scene in BeamTracer Audio Visualizers. Shape its response in your browser with settings, audio modulation, presets, and tips.

Default demo track · live audio-reactive settings

Big Bang Theory is a space-themed audio-reactive scene in the Space category. Open it from the left visualizer list, start an audio source, and use the settings panel to shape its response.

Open Big Bang Theory

Launch the visualizer with its matching left-nav entry selected.

The Big Bang describes the origin and ongoing expansion of the observable universe from an extremely hot, dense early state roughly 13.8 billion years ago. BeamTracer's exploding particle field is a stylized, audio-reactive burst inspired by that idea, not an attempt to model actual cosmology.

It wasn't an explosion into empty space. Space itself stretched, and it did so everywhere at once — there's no single point of origin you could travel to and no center to the universe. Every distant galaxy appears to be moving away from every other one, consistent with expansion rather than debris flying outward from a blast site.
The universe is about 13.8 billion years old. Scientists arrive at that figure mainly by measuring how fast the universe is expanding today and running the expansion backward, then cross-checking against the oldest light and oldest stars observed.
The cosmic microwave background is the afterglow. About 380,000 years after the Big Bang, the universe cooled enough for atoms to form, and light was finally able to travel freely. That relic light, now stretched to a faint microwave glow, is the oldest light astronomers can observe.
A moment of inflation set the stage. In an instant far less than a second long, the very early universe is thought to have expanded enormously faster than light-speed travel through space, stretching tiny quantum fluctuations into the seeds of future galaxies.
Expansion hasn't stopped — it's speeding up. After the initial expansion slowed under gravity, observations show the universe's growth rate has been accelerating for the last several billion years, a trend attributed to dark energy.

These details are summarized from NASA's Big Bang and the Evolution of the Universe overview, NASA Webb's Big Bang Q&A with Nobel laureate John Mather, and NASA's guide to dark energy and the accelerating universe.

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

Classic Dust · Nebula Cloud · Firefly Swarm · Cosmic Storm · Aurora Mist · Bass Blast

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
Size	Core	Sets the visible size.
Respawn Rate	Material	Sets how quickly respawn changes or moves.
Turbulence	Animation	Sets how irregular or unpredictable the turbulence appears.
Rotation Speed	Animation	Sets how quickly rotation changes or moves.

Settings reference

Core

Setting	Available values	What it changes
Particle Count	0.1K–500K	Sets how many visible elements are drawn.
Size	0.001–0.2	Sets the visible size. Use Assign modulation to choose a source.
Spread	0.5–20	Controls how far elements separate from the center or from one another.

Material

Setting	Available values	What it changes
Lifetime	0.5s–20s	Controls lifetime; higher values increase the effect and lower values reduce it.
Respawn Rate	0%–100%	Sets how quickly respawn changes or moves. Use Assign modulation to choose a source.
Opacity	10%–100%	Sets the overall transparency.

Colors

Setting	Available values	What it changes
Base Hue	0°–360°	Moves the color around the color spectrum.
Variation	0%–100%	Controls variation; higher values increase the effect and lower values reduce it.
Saturation	0%–100%	Moves colors from muted toward vivid.
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	0–3	Sets the visible bass intensity.
Mid Intensity	0–3	Sets the visible mid intensity.
High Intensity	0–3	Sets the visible high intensity.
Smoothing	0–0.99	Balances immediate audio response against steadier motion.
Beat → Spawn Events	On / Off	Turns beat → spawn events on or off.

Animation

Setting	Available values	What it changes
Velocity X	-2–2	Controls velocity x; higher values increase the effect and lower values reduce it.
Velocity Y	-2–2	Controls velocity y; higher values increase the effect and lower values reduce it.
Velocity Z	-2–2	Controls velocity z; higher values increase the effect and lower values reduce it.
Turbulence	0–1	Sets how irregular or unpredictable the turbulence appears. Use Assign modulation to choose a source.
Rotation Speed	0–2	Sets how quickly rotation changes or moves. 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 bass for the largest orbital or camera motion and highs for stars, sparks, or glow accents.
Try assigning Bass to Size, then compare Mid, High, and Volume while the demo track plays. The slider's live fill shows the signal reaching that control.