4 ms·
In Japan, HST noise is limited to 70-75 dB at 25 meters from the track. The 108 dB sonic boom will be experienced over a much larger area.
by pfdietz 4mo ago
In Japan, HST noise is limited to 70-75 dB at 25 meters from the track.
The 108 dB sonic boom will be experienced over a much larger area.