int soundSensor = 2;
int led = 13;
int threshold = 500;

void setup() {
  pinMode(soundSensor, INPUT);
  pinMode(led, OUTPUT);
  Serial.begin(9600);
}

void loop() {
  int soundValue = analogRead(soundSensor);
  if (soundValue > threshold) {
    digitalWrite(led, HIGH);
    Serial.println("Loud sound detected!");
  } else {
    digitalWrite(led, LOW);
  }
}