Piezoelectric transducers are devices that convert mechanical energy into electrical energy or vice versa. They utilize the piezoelectric effect, which occurs in certain materials that generate an electric charge when subjected to mechanical stress. This property makes them useful in various applications, such as sensors, actuators, and microphones. These transducers can be found in everyday items like speakers and watches. When pressure is applied to a piezoelectric material, it produces a voltage, allowing it to detect changes in force or vibration. Conversely, when an electric field is applied, the material changes shape, enabling it to create sound or movement.