Software Tonoscope -

A tonoscope is a device that makes sound visible by converting audio signals into vibrating patterns. Traditionally, these were physical devices using a speaker, a membrane, and sand or powder.

Using visual feedback to assist in speech pathology and autism communication. Acoustics

Sarah sat in the engineer's chair next to him. "Let me try something." She adjusted the microphone input. She closed her eyes, took a deep breath, and began to chant. It was a low, guttural 'Om', the primal sound often taught in Sanskrit tradition.

1. Audio Input: Use an Audio Device In TOP to bring in microphone or audio file signal.
2. Analysis: Use an Audio Spectrum CHOP to analyze the frequencies.
3. Geometry: Create a grid geometry (Grid SOP).
4. Displacement: Use the audio data to displace the Z-axis of the grid points.
5. Visuals: Place a virtual camera above the grid. The peaks and valleys will look like cymatic patterns.
6. Sand Simulation (Advanced): Use a particle system (Particle SOP) and let the audio frequencies repel the particles to where the nodes are. This creates a digital version of the sand moving on a plate.

• Low frequencies → radial symmetry / large structures
• High frequencies → intricate, chaotic edges
• Volume → pattern density, brightness, or particle speed

Project Title: Software Tonoscope – Visualizing Sound’s Hidden Geometry

Overview

A tonoscope is a device that makes sound visible, traditionally using a metal plate, sand, and a vibrating source (like a voice or sine wave). When you sing a note into it, the sand arranges itself into intricate geometric patterns—Cymatics in action. This project is a digital, real-time reimagining of that concept.

1. Open your browser.
2. Search for "Projectarium Tonoscope" or "Online Cymatics Tool."
3. Grant mic access.
4. Hum a low note. Watch the sand dance.