3 ms·
The SPL on the London Underground reaches maximum levels of >105dB (previous measurements on the Northern Line hit ~108dB, IIRC). Average noise levels on some p
by jwestbury 4y ago
The SPL on the London Underground reaches maximum levels of >105dB (previous measurements on the Northern Line hit ~108dB, IIRC). Average noise levels on some parts of the deep underground lines (Victoria, Northern, etc.) can be well in excess of 80dB.