Kõrgsagedusmikrofon

Kõrgsagedusmikrofon refers to a microphone designed to capture sound frequencies significantly above the typical human hearing range, generally considered to be above 20 kHz. These microphones are specialized tools used in various scientific, industrial, and research applications where ultrasonic or very high-frequency sounds are of interest.

The design of a high-frequency microphone often involves specific diaphragm materials and transducer elements capable of responding to these rapid pressure variations. Unlike standard microphones that prioritize fidelity within the audible spectrum, high-frequency microphones are engineered to accurately transduce these higher frequencies. This can involve smaller, stiffer diaphragms or specialized piezoelectric or capacitive sensing mechanisms.

Applications for high-frequency microphones are diverse. In animal behavior research, they are used to record the ultrasonic vocalizations of rodents, bats, and insects, providing insights into their communication and echolocation. Industrially, they are employed in non-destructive testing to detect flaws in materials by analyzing the ultrasound generated by potential defects. They can also be used in acoustic monitoring for machinery diagnostics, identifying potential issues before they become critical by listening for high-frequency anomalies. Furthermore, in fields like aerodynamics, they can help study airflow noise at very high frequencies. The data captured by these microphones often requires specialized software for analysis, as it falls outside the scope of standard audio processing tools.