What are 3 types of sound?

Answer:  There are three categories of sound:

• Any sound that is lower than 20 Hz is said to have an infrasonic frequency. Elephants use infrasonic sounds to communicate with their herd hundreds of kilometres away.
• It is a sound whose frequency ranges from 20 to 20,000 Hz. Inaudible sounds are those that a human cannot hear, therefore the name.
• A sound with a frequency higher than 20,000 Hz is considered ultrasonic. Canines and bats can hear high-frequency sounds.