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Audio Spectrum Analyzer in Python (a waveform viewer)

https://www.youtube.com/watch?v=AShHJdSIxkY

Audio Visulization

32-Band Audio Spectrum Visualizer using Raspberry Pi 3

https://www.raspberrypi.org/forums/viewtopic.php?t=186173

8x8 MAX-7219 Dot Matrix:

https://www.amazon.com/WMYCONGCONG-MAX7219-Display-Arduino-Microcontroller/dp/B07FT6MZ7R/ref=asc_df_B07FT6MZ7R/?tag=hyprod-20&linkCode=df0&hvadid=295668195801&hvpos=1o2&hvnetw=g&hvrand=1838390105890889719&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9032179&hvtargid=pla-528229147177&psc=1

Cube

LED Cube, http://ozzmaker.com/raspberry-pi-3-plus-rgb-led-cube-cava-awesome-audio-visualiser/

Raspberry Pi 3, https://www.raspberrypi.org/products/raspberry-pi-3-model-b/

cava Spectrum Analyzer, https://github.com/karlstav/cava

light show pi, http://lightshowpi.org/