const int buzzerPin = 9;
const int potentPin = A2;

void setup() {
  // put your setup code here, to run once:
pinMode(buzzerPin, OUTPUT);
}
//noise is the frequency
void loop() {
  int potentValue = analogRead(potentPin);
  int noise = map(potentValue, 0, 1023, 0, 255);
  tone(buzzerPin, noise);
}