Acoustics: Name for sound below the human hearing threshold. Sounds with frequency lower than 20 Hz are termed as what? Choose the correct option.

Q: Acoustics: Name for sound below the human hearing threshold. Sounds with frequency lower than 20 Hz are termed as what? Choose the correct option.

Concept Human hearing ≈ 20 Hz to 20 kHz. 20 kHz: ultrasound. Final Answer Infrasonic (infrasound)

Difficulty: Easy

Infrasonic (infrasound)
Ultrasonic
Audible
Supersonic

Correct Answer: Infrasonic (infrasound)

Explanation:

Concept

Human hearing ≈ 20 Hz to 20 kHz.
< 20 Hz: infrasound; > 20 kHz: ultrasound.

Final Answer
Infrasonic (infrasound)

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