This equipment can change the analog signal of the music and so on into the flash of the lamp.
I made this circuit based on the idea of Mr.Yoram Peres.
It is possible to make compactly if using the IC of the exclusive use to display the level of the signal. However, I made with the circuit which used the general IC because of the following reason.
The operation of the part and the circuit can be understood.
The optional detection level can be set.
It is possible to do the application.