KY-038 Microphone Module (Digital)

// KY-038 Microphone Module (Sensor) (Digital version)
int ledPin = 13;
int sensorPin = 9;
boolean val = 0;
void setup() {
  pinMode(ledPin, OUTPUT);
  pinMode(sensorPin, INPUT);
}
void loop () {
  val = digitalRead(sensorPin);
  // When the sensor detects a signal above the threshold value, LED flashes
  if (val == HIGH) {
    digitalWrite(ledPin, LOW);
  }
  else {
    digitalWrite(ledPin, HIGH);
  }
}