Voice is projected away from baby out of their mouths, like older humans.
Hearing damage is primarily caused by sound waves being sent directly towards the ears.
Indirect sound waves are much less harsh and “weaker” in energy which are affected by distance (sound wave scatter; dispersing of energy/angle of dispersement), amount of surface “bounces”, amount of energy absorbed by surfaces and materials per bounce, the humidity of the air, and other smaller factors.
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