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I've got the audio from my iPhone running through a Y-splitter so I can listen with my headphones while also sending it into my handheld controller project that ive been working on. On the screen, an IL19341, the audio shows up as waveforms kind of like an oscilloscope. I've shown this project before, but there are a few changes this time: the audio source is my iPhone instead of my PC, the display is now a rectangular IL19341 instead of the smaller round GC9A01, and I've swapped the Arduino Nano for an ESP32. The result is a smoother, more responsive display with a bigger screen to show off the waveforms. Il be hoping to implement this into the controller menu.