The Ohsillyscope, made by DevOps engineer and computer science major Thomas McDonald, displays wave forms made by reading real-time audio capture from Advanced Linux Sound Architecture. Here’s more from hackster.io:
Amusingly dubbed the “Ohsillyscope,” McDonald’s audio visualizer uses a 64×64 RGB LED matrix panel connected to an Adafruit RGB Matrix Hardware Attached on Top (HAT) add-on for a Raspberry Pi single-board computer. Designed for real-time audio capture, the project reads from Advanced Linux Sound Architecture (ALSA) sources and creates a live waveform image for display on the matrix.
“It’s writing the sound card buffer directly to a pixel,” McDonald explains of the software’s operation. “[I’ve now] made it completely portable, [and] it’s gonna make gigging super fun. If you wanna make this repo better please submit a PR and I’ll gladly let people collaborate!”
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