Audio Visualizer Circles

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Max4466 Analog Mic & Amp, into ADS1115 Analog to Digital Converter, into Arduino Nano 33 IoT, over Serial connection, into Processing 3 program. Arduino Sketch converts the mic/adc stream into a usable stream of digital audio at 44.1KHz. The Processing sketch reacts to the incoming digital audio signal not through the sound card but the raw data's amplitude. Incoming signal then grows, shrinks, and oscillates the circle patterns, with some randomness injected.

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If you set it up well it can be a tool for deaf people

npci