Crystal Filter is widely used in the reproduction, recording and transmission of sound. The piezoelectric wafers mounted on the microphone will change the vibration of the sound. When the sound wave hits a piezoelectric slice, the charge is generated on the electrodes at both ends of the sheet, and the size and symbol change with the sound. The change on this piezoelectric chip through electronic device, can turn into a radio wave to a distant place. These radio waves are received by the radio, and through the vibration of the piezoelectric crystal sheets placed on the radio trumpets, they become sound echoed in the air. We are Crystal Filter Manufacturer in China with best quality and price. Welcome to contact us for any requirements.