How can you design a circuit for an LED-based visual music rhythm analyzer?
To design a circuit for an LED-based visual music rhythm analyzer, use an audio input connected to a spectrum analyzer circuit or a set of band-pass filters to separate different frequency bands. Connect LEDs to these frequency bands through drivers, so they light up in response to music. A microcontroller can be used for more complex visualizations and to control the LEDs' response to the music rhythm.