Humans can hear sound waves with frequencies between.

Humans can hear sound waves with frequencies between.

• A. 0 Hz to 40 Hz
• B. 40 Hz to 200 Hz
• C. 200 Hz to 2 kHz
• D. 20 Hz to 20,000 Hz

Answer: (D)

Audible frequencies for humans cover a broad band: roughly 20 Hz to 20,000 Hz. Frequencies below about 20 Hz are considered infrasonic and aren’t heard as pitches, while frequencies above about 20,000 Hz are ultrasonic and not audible to human ears. So the range from about 20 Hz up to about 20,000 Hz captures the entire spectrum we can hear. The other options either include inaudible low frequencies or stop well before the upper end, missing many of the higher-pitched sounds we can perceive. That's why the 20 Hz to 20,000 Hz range is the correct one.

Audible frequencies for humans cover a broad band: roughly 20 Hz to 20,000 Hz. Frequencies below about 20 Hz are considered infrasonic and aren’t heard as pitches, while frequencies above about 20,000 Hz are ultrasonic and not audible to human ears. So the range from about 20 Hz up to about 20,000 Hz captures the entire spectrum we can hear. The other options either include inaudible low frequencies or stop well before the upper end, missing many of the higher-pitched sounds we can perceive. That's why the 20 Hz to 20,000 Hz range is the correct one.