High frequency in sound waves refers to the range of frequencies that are higher than what is typically audible to humans. In the context of sound, high frequency is usually associated with frequencies above 20,000 Hz, which is the upper limit of human hearing. Some animals, such as bats and dolphins, can perceive ultrasonic frequencies beyond the human range.
The use of high frequency in sound waves varies depending on the application. In technologies like ultrasonic imaging and ultrasonic cleaning, high-frequency sound waves are utilized. Ultrasonic imaging employs frequencies above the audible range to create detailed images of internal body structures or other objects by analyzing the reflections of the sound waves. Ultrasonic cleaning utilizes high-frequency sound waves to generate tiny bubbles in a liquid, which help in removing dirt and contaminants from surfaces.
On the other hand, audio frequency refers to the range of frequencies that are audible to humans. In general, audio frequency ranges from about 20 Hz to 20,000 Hz. This range covers the frequencies that we perceive as sound. Audio frequency is used in various applications such as music reproduction, telecommunications, public address systems, and more.
In electronics, the difference between high frequency and audio frequency lies in the frequency range being considered. High frequency in electronics typically refers to frequencies above the audio range. It commonly encompasses radio frequencies (RF), microwaves, and other higher frequency ranges used in communication, wireless systems, radar, and other electronic applications. High-frequency electronics often involve specialized circuitry and components to handle and process signals at those frequencies.
Audio frequency, on the other hand, focuses on the frequencies within the audible range for humans. It involves the design and implementation of circuits and systems that handle audio signals, such as amplifiers, speakers, audio processors, and audio recording/playback equipment.
In summary, high frequency in sound waves extends beyond the audible range, often utilized in applications such as ultrasonic imaging and cleaning. In electronics, high frequency refers to frequencies above the audio range, while audio frequency pertains to the frequencies we can hear.