Question

At what time the child can hear the whistle?

                                                 

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Answer 1

Answer:

A fetus begins responding to sound at between 22 and 24 weeks but can only hear low frequencies, such as a dog barking or a lawn mower. As the auditory system and the brain continue to develop, this range increases. By late pregnancy, the fetus can hear voices and distinguish between them.

Answer 2

Answer:

Wheezing is a high-pitched whistling sound made while breathing. It's often associated with difficulty breathing. Wheezing may occur during breathing out (expiration) or breathing in (inspiration). Inflammation and narrowing of the airway in any location, from your throat out into your lungs, can result in wheezing.