Which range is infrasonic?

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Multiple Choice

Which range is infrasonic?

Explanation:
Infrasonic refers to sound frequencies below what humans can hear. Humans typically hear roughly 20 Hz to 20 kHz, so anything below 20 Hz is infrasonic. That makes the range less than 20 Hz the correct choice. The 20 Hz to 20 kHz range is audible, the greater than 20 kHz range is ultrasonic, and 0 Hz isn’t a sound frequency at all (it’s DC, no oscillation).

Infrasonic refers to sound frequencies below what humans can hear. Humans typically hear roughly 20 Hz to 20 kHz, so anything below 20 Hz is infrasonic. That makes the range less than 20 Hz the correct choice. The 20 Hz to 20 kHz range is audible, the greater than 20 kHz range is ultrasonic, and 0 Hz isn’t a sound frequency at all (it’s DC, no oscillation).

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