Representing Psychophonies with White Noise in Blender

Published on January 06, 2026 | Translated from Spanish
Screenshot of Blender showing a waveform generated with white noise, where the word 'help' is subtly distinguishable in the integrated visual pattern.

Representing Psychophonies with White Noise in Blender

Psychophonies or electronic voices are an intriguing phenomenon where, supposedly, mysterious voices are captured in audio recordings. This tutorial shows you how to visualize this concept by creating a white noise waveform in which a secret message is hidden 🎛️.

Prepare the Scene and Generate the Waveform

Start Blender and switch to the 2D Animation workspace. Go to the compositor node editor. Here, add a Texture node and select a noise texture, such as Clouds or Distorted Noise. Connect its output to an RGB Curves node to manipulate the contrast and produce a line pattern that mimics an irregular audio waveform. Render this image and save it; it will be your base.

Key steps for the visual base:
  • Open Blender and select the 2D Animation workspace.
  • Use the node editor to add a noise texture and adjust its contrast with RGB Curves.
  • Render and save the generated waveform image.
The goal is for the text to appear as a natural modulation of the wave, not an overlaid element.

Integrate the Hidden Message with Pencil 2D

Now, load the rendered image into the video sequence editor as a background. Make sure the Pencil 2D add-on is enabled from Blender's preferences. Create a new drawing layer within this tool. With the brush and a high-contrast color, subtly trace the letters of a word, for example, HELP. Draw following and altering the irregular lines of the background noise. Adjust the layer's opacity to blend the drawing with the underlying waveform.

Process to hide the text:
  • Load the waveform as background in the sequence editor.
  • Enable and use the Pencil 2D add-on to draw on a new layer.
  • Draw the text integrated into the noise pattern and adjust its opacity to blend it.

Final Tip for the Effect

Check that your hidden message maintains an enigmatic character. If the text is too obvious, it loses the essence of the mystery you're trying to represent. The art lies in making the viewer perceive the message only after careful observation, simulating the process of discovering a psychophony in a recording 🔊.