Question

list of avoidable and unavoidable noises

Answer 1

Avoidable noises are:
1.Loud music
2.A noisy classroom
3.A noisy environment
4.Noise from a banging door

Unavoidable noises are:
1.Noise from a passing jet.
2.Noise from an industry
3.Noise caused by lightning
4.Noise made by hitting in mines

Answer 2

Avoidable noises:

Audible RANGE in b/w 20Hz - 20000Hz

The voices like Honking on horns in traffic are avoidable similarly,loudspeakers in public as well as Home stereo speakers at home can also be avoid with care.

Event celebration using the speakers and loud music bands and also loud sirens as well as the firecrackers can be avoid

 Un-avoidable noises :

These types of voices includes Construction of buildings and thermal noise , Moreover some animal sounds . Additionally most of the road noises also include in this category