What this bar is supposed to be?

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:information_source: Attention Topic was automatically imported from the old Question2Answer platform.
:bust_in_silhouette: Asked By mateusak
:warning: Old Version Published before Godot 3 was released.

enter image description here

What is this?

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:bust_in_silhouette: Reply From: Zylann

This bar represents sound amplitude when something is played in the scene.