Only young people can hear this sound

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Only young people can hear this sound...

Adults can't hear this sound...

What is this sound ?
This is a 17.4 kHz (Frequency) sound.

Why Adults can't hear this sound ?
Because this is how their Ear works, by time they can't hear higher frequency.
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Hallo lieber Zuschauer wenn dir das Video gefallen hat bitte lass ein Like da und Abboniere diesen Kanal für mehr Content.

Phasimotendo