Question

name a thing that detect sound

Answer 1

Human ears detect the sound in between 20 Hz to 20000 Hz

Infrasound & ultrasound are usually detect by special instruments.

Answer 2

$heya \\ frnd \\ \\ here \: is \: your \: answer \\ \\ sound \: is \: detcted \: by \: the \ \\ : medium \: called \: wave$
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hope it helps you