This method requires a crystal such as calcite or quartz. The most commonly used methods for detecting ultrasound are: Here are a few examples of methods and devices used for high-frequency sound detection: Detection Methods There are several methods and devices you can use to detect ultrasonic sound. Ultrasonic sound detection has multiple industrial applications and is used for detecting hidden flaws and leaks. Using an ultrasonic detector or transceiver, high-frequency sounds can be translated into the human hearing range and heard over a headset. Ultrasonic sound detection is possible although our ears alone cannot detect ultrasound. While exceptions do exist, ultrasound can be heard mostly by children and younger humans. Not everyone can hear ultrasonic sound because the range of human hearing is limited (20 Hz-20 kHz), and it also decreases with age.
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