Differentiate between infrasonic, sonic and ultrasonic sound
| Infrasonic | Sonic | Ultrasonic |
|---|---|---|
| It has frequency less than the audible frequency range. | It has the frequency equal to the audible frequency range. | It has the frequency greater than the audible frequency range. |
| Less than 20 Hz | Between 20 Hz to 20000 Hz | More than 20000 Hz |
| Sources: Volcanoes, Earthquakes, etc. | Sources: Humans, Animal roars, etc. | Sources: Bats, SONAR, etc. |