The frequency that generates the most intense noise level is _________.

The frequency that generates the most intense noise level is _________.

• A. 100 Hz
• B. 300 Hz
• C. 1000 Hz
• D. 60 Hz

Answer: (B)

The amount of noise we perceive from a given sound depends on how sensitive the human ear is to different frequencies. The ear is most sensitive to mid-to-high frequencies, especially around the 2,000–4,000 Hz region, so for a noise source with energy spread across frequencies, those mid-high frequencies tend to be perceived as louder than the same energy at low frequencies. Among the options, 1,000 Hz sits closest to that peak sensitivity, making it the most perceptually intense for a broad-band noise compared with the others. Lower frequencies like 60 Hz and 100 Hz are heard less loudly because the ear’s sensitivity drops off at those frequencies, and 300 Hz is also below the main peak of sensitivity, though it’s more audible than the very low ones, it’s not as loud as 1,000 Hz for the same energy.

The amount of noise we perceive from a given sound depends on how sensitive the human ear is to different frequencies. The ear is most sensitive to mid-to-high frequencies, especially around the 2,000–4,000 Hz region, so for a noise source with energy spread across frequencies, those mid-high frequencies tend to be perceived as louder than the same energy at low frequencies.

Among the options, 1,000 Hz sits closest to that peak sensitivity, making it the most perceptually intense for a broad-band noise compared with the others. Lower frequencies like 60 Hz and 100 Hz are heard less loudly because the ear’s sensitivity drops off at those frequencies, and 300 Hz is also below the main peak of sensitivity, though it’s more audible than the very low ones, it’s not as loud as 1,000 Hz for the same energy.