Hi, I have to do a project in which I use Arduino where thanks to the music or clapping light up some LEDs depending on the intensity of the volume.
I ask for help and if you can finish the program and also the assembly of the circuit.
Thank You! 
It may be interesting to use an MSGEQ7 - chip.
It houses an 7-band equalizer, doesn't need much extra components and lots of
arduino-examples are available.
Don't forget that the ear perceives sound volume on a logarithmic scale.
I tried a circuit but the monitor from making out the serial numbers and random code wrong
This is the circuit with the Program, I ask Help
const int analogInPin = A0; // pin di input analogico a cui è collegato il microfono.
int sensorValue = 0;
void setup()
{
Serial.begin(9600);
}
void loop()
{
// leggi il valore del microfono.
sensorValue = analogRead(analogInPin);
if (sensorValue > 50) {
// ho messo il valore 50 per rimuovere il rumore di fondo.
// stampa i risultati sul monitor seriale :
Serial.print("sensor = " );
Serial.println(sensorValue);
}
// aspetta mezzo secondo prima del prossimo loop
delay(500);
}
Firstly why are you decoupling the output of the amp to the ADC.
Also what you you mean by "Wrong" can you explain please.
It might also be a good idea to be able to adjust the gain of the amp otherwise you may saturate the output and never see any change above a certain level.
Have you also accounted for the DC offset of the output when calculating the input value.
Cheers Pete.