NoiseMeterEffect

Source: NoiseMeterEffect.h

NoiseMeterEffect

class NoiseMeterEffect

src/light/effects/NoiseMeterEffect.h:23

Inherits: EffectBase

Audio-reactive effect: a noise field modulated by sound level.

Author: Andrew Tuline (WLED-SR), via the predecessor, https://github.com/ewowi/MoonLight/blob/main/src/MoonLight/Nodes/Effects/E_WLED.h

A vertical meter whose height tracks the sound level and whose color is a scrolling noise field. So a loud moment fills the panel bottom-up with a drifting gradient rather than a flat bar.

Prior art: WLED's Noisemeter, whose mapping and field sampling this reproduces.

Public Attributes

uint8_t fadeRate = 240 : The per-frame fade, which is the motion trail.

uint8_t width = 128 : How much of the column a given level fills.

Public Methods

virtual inline const char * tags() const override : Catalog tags: WLED origin, audio-reactive.

virtual inline Dim dimensions() const override : Writes the x=0 column, which extrude fans across x and z.

virtual inline void defineControls() override : Publish the trail and the meter's gain.

virtual inline void tick() override : Light the column to the current level, coloring each row from the scrolling field.

More info

The color depends only on the row

Each lit row samples a field that both scrolls on its own phases and is modulated by the level. Since nothing varies along x, the effect writes the x=0 column and extrude fans it across. The meter then reads as one wide block without this effect duplicating the broadcast itself.