code: public void setPitchIncrement(double value)
      {
          if (value < 0)
          {
              String message = Logging.getMessage("generic.ArgumentOutOfRange", value);
              Logging.logger().severe(message);
              throw new IllegalArgumentException(message);
          }
          this.pitchStep = value;
      }
docs: Set the pitch increment value in decimal degrees. Doubling this value will double the pitch change speed. Must be
  positive. Default value is 1 degree.
  
  @param value the pitch increment value in decimal degrees.
  
  @throws IllegalArgumentException