Question

write the range of infrasonic, sonic, ultrsonic frequency



please help me
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Answer 1

Answer:

Audible sound waves whose frequencies are less than 20 Hz are in the infrasonic range. Sound produced by earthquakes, thunder, volcanoes are in Infrasonic range. Human Ear cant hear this sound but elephants and whales can hear this. Frequencies above 20,000 Hz are in the ultrasonic range.

Explanation:

Answer 2

Infrasonic Frequency : 20 Hz

• Hearing becomes gradually less sensitive as frequency decreases, so for humans to perceive infrasound, the sound pressure must be sufficiently high.

Sonic Frequency : 20 Hz - 20000 Hz

• Frequency is in the band audible to the average human, the human hearing range.

Ultrasonic Frequency : 20000 Hz

• Ultrasound is not different from "normal" (audible) sound in its physical properties, except that humans cannot hear it. Ultrasound devices operate with frequencies from 20 kHz up to several gigahertz.