20 Hz
Human hearing is capable of detecting sound waves between 20 and 20.000 Hz. … merely a small fraction of the frequency spectrum. Most sounds around us go unnoticed.

2017

1910

1908
2024
2023

2025

2017

2018

2025
2014

1929

2015

2013

2016

2023

2023

2010

2013

2014

1978