const int micPin = A0;
const int ledPins[] = {11, 10, 9, 8, 7, 6, 5, 4, 3, 2};

void setup() {
  for (int i = 0; i < 10; i++) {
    pinMode(ledPins[i], OUTPUT);
  }
}

void loop() {
  int micValue = analogRead(micPin);
  int ledLevel = map(micValue, 520, 800, 0, 10);
  
  for (int i = 0; i < 10; i++) {
    if (i <= ledLevel) {
      digitalWrite(ledPins[i], HIGH);
    } else {
      digitalWrite(ledPins[i], LOW);
    }
  }
}