Question

Answer this question​

Answer 1

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i) Noise is unwanted sound considered unpleasant, loud or disruptive to hearing. From a physics standpoint, noise is indistinguishable from desired sound, as both are vibrations through a medium, such as air or water. The difference arises when the brain receives and perceives a sound.

ii) Due to the sensitivity of the ear and the intricacy of the auditory system as a whole, humans must understand dangerous noise levels and their damaging effects. Avoiding excessively loud noises will help keep your ears healthy and well-functioning for as long as possible.

iii) Outdoor noise barriers can effectively reduce the transmission of noise from source to receiver. When placed between source and receiver, the barrier diffracts the sound transmitted to the receiver. This reduction is frequency dependent: Noise barriers block high frequencies more effectively than low frequencies.

Answer 2

Answer:

i) Noise is unwanted sound considered unpleasant, loud or disruptive to hearing. From a physics standpoint, noise is indistinguishable from desired sound, as both are vibrations through a medium, such as air or water. The difference arises when the brain receives and perceives a sound.

ii) Due to the sensitivity of the ear and the intricacy of the auditory system as a whole, humans must understand dangerous noise levels and their damaging effects. Avoiding excessively loud noises will help keep your ears healthy and well-functioning for as long as possible.

iii) Outdoor noise barriers can effectively reduce the transmission of noise from source to receiver. When placed between source and receiver, the barrier diffracts the sound transmitted to the receiver. This reduction is frequency dependent: Noise barriers block high frequencies more effectively than low frequencies.