Sound_Sensor.ino

int sensorPin = 2;    
int sensorValue = 0;  
 
void setup() {
  // declare the ledPin as an OUTPUT:
   Serial.begin(9600);  
}
 
 void loop() {
  // read the value from the sensor:
  sensorValue = digitalRead(sensorPin);    
  delay(100);          
  Serial.print("sensor = " );                       
  Serial.println(sensorValue);     

  if(sensorValue == 0)
  {
    Serial.println("...QUIET");
  }
  else
  {
    Serial.println("........LOUD");
  }
}