Scream Fountain: As a new type of water feature entertainment, its principle is to control the frequency inverter output frequency by simulating the voltage output based on the pitch and duration of human voice. Changing the frequency alters the motor speed, which in turn modifies the pump pressure. This allows for control over the pump's speed, adjusting the water flow rate and the height of the jet. Consequently, it determines the fountain's height and duration, making it an engaging and aesthetically pleasing water display project.