The decibel (dB) scale is logarithmic, not linear, increasing by a power of ten with every 10dB, which roughly equates to a doubling in loudness based on average human hearing. Consequently, 30dB is ...

As Swedish cities are densified at a fast pace, there is now construction very close to roads and thoroughfares - land that was considered unthinkable for development just a decade ago. It is already ...