int sensorValue;
int sensorLow = 1023;
int sensorHigh = 0;
int ledPin = 13;

void setup() {
pinMode(ledPin,OUTPUT);
digitalWrite(ledPin,HIGH);

  while (millis() < 5000){
    sensorValue = analogRead(0);
    if (sensorValue > sensorHigh){
      sensorHigh = sensorValue;
  }
}
  while (millis() < 5000){
    sensorValue = analogRead(0);
      if (sensorValue < sensorLow){
        sensorLow = sensorValue;
  }
} 
digitalWrite(ledPin,LOW);
}


void loop() {
  sensorValue = analogRead(0);
  int pich = map(sensorValue, sensorLow, sensorHigh, 50, 4000);
  
  tone(11,pich,20);
}