An electronics and Arduino newbie here.
I built a 3x3x3 LED cube and made some interesting patterns in it using Arduino. Now, I thought of lighting the LEDs based on an audio( MP3) played in my laptop. But I don't know how to send the value of the real-time amplitude of the audio signal as input to the arduino.
I don't want to mess with my sound card by directly connecting the input of Arduino to it. Is there any way to obtain real-time amplitude of the audio signal using a software and send the signal as input to Arduino via USB?
Please help me out here. Thanks in advance