Human Audio Spectrum 20H - 20KHZ / How high can you hear

Human Audio Spectrum 20H - 20KHZ / How high can you hear? The sinus tone wave going trough entire human audio spectrum, starting at 20Hz and ending at 20kHz. It runs at the same Volume the whole time. Do not wonder why it seams like the volume changes in different frequencies. Note: do not run the video at to hi Volume it might damage your ears.

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