A child has an ear canal that is 1.3 cm long. At what sound frequencies in the audible range will the child have increased heari

Question

2 years ago

15

ng sensitivity?

1 answer:

ElenaW [278] · Answer 1 · 2022-06-29T06:23:46+03:00

Answer:

The answer to this is

6600 Hz to 19,800 Hz

Explanation:

The shape of the human ear is analogous to a closed ended pipe hence

we have λ = 4L or wavelength = 4 * length of the child ear

The frequency c/λ where c = speed of sound = 343 m/s

hence the child's audible range is multiples of 343/(4*0.13) =6600Hz

or 13200 Hz or 19,800 Hz

The generally quoted range of human hearing is 20 Hz to 20 kHz