Audio Spectrum Analyzer (VU Meter)
thingiverse
Music is essentially a signal with fluctuating voltage and frequency. An Audio Spectrum Analyzer measures the voltage level of a specific frequency, showing it on a device used primarily in recording studios to examine sound. Despite being an instrument, watching the dancing lights is enjoyable, providing a unique way to visualize music. A few years ago, I built a smaller version using two columns on a prototyping board, but it was messy due to excessive soldering. This time around, I aimed for neatness and visual appeal. Check out this project on Instructables: https://www.instructables.com/id/Audio-Spectrum-Analyzer-VU-Meter/ View the build process in action here: https://www.youtube.com/watch?v=CIrVH2XQp40
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