Table 2.
Changes in the magnitudes of noise level induced by lockdown. This figure presents the percent change and actual quantitative information on noise level for some studies are presented in Table S1.
| Studies | Location | Types of noise | Human activities (sources of noise) that reduced due to lockdown | Percent (%) reduction innoise level |
|---|---|---|---|---|
| Arora et al., 2020 | Global (several countries) | Noise intensity | Stone quarrying and crushing, commercial shipping, traffic noise, industrial activities | 35–68 |
| Lecocq et al., 2020 | Global (several countries) | High-frequency (4–14 Hz) Seismic ambient noise | Traffic, schools and universities, flights, tourist activity, population mobility | 50 |
| Mandal and Pal, 2020 | Catchment of Dwarka river basin Eastern India | Noise intensity | Stone quarrying and crushing | 25 |
| Aletta et al., 2020a | Rome, Italy | Noise intensity | Urban traffic (private trip reduced up to 64.6%) | 9 |
| Poli et al., 2020 | Northern Italy | Seismic ambient Noise (in the 1–10 Hz frequency range) |
Reduced vehicle traffic and nonessential industrial activities | 50 |
| Aletta et al., 2020b | Camden Town, London, UK | Noise intensity | Public and private traffic | 7 |