The statements mentioned in the book might have confused Aaryansh, but there are a few reasons why he can still hear the sound produced by mosquitoes, despite the claim that insect sounds lie in the infrasonic range:
Frequency Range: While it is true that many insect sounds, such as those produced by crickets or beetles, are typically in the ultrasonic or infrasonic range, mosquitoes produce sounds that can fall within the audible range for humans. The buzzing sound of a mosquito is typically produced at frequencies between 200 and 600 Hz, which is within the range of human hearing.
Sensitivity to Frequencies: The ability to perceive and hear sounds varies among individuals. Although the average range of human hearing is generally between 20 Hz and 20,000 Hz, it can differ from person to person. Some individuals may have better sensitivity to higher frequencies, allowing them to hear sounds produced by mosquitoes more easily.
Volume and Proximity: The volume and proximity of the sound source also play a role in our ability to hear it. Mosquitoes are generally small insects that fly close to humans, and their buzzing sound can be relatively loud when they are in close proximity. This makes it more likely for Aaryansh and others to hear the sound, even if it falls within the audible range.
It's important to note that while some mosquito sounds are audible, not all insect sounds are. Many insects do produce sounds that are outside the range of human hearing, either in the ultrasonic or infrasonic range. Aaryansh's confusion may arise from a generalization made in the book that doesn't apply to all insects, particularly mosquitoes.