Philly Park Installs A Device That Emits A Frequency That Only Annoys Young People
Ubergizmo - Sun 7 Jul 19Image credit – Sunmist/WikipediaThe frequency of sound is wide and as we get older, there are certain frequencies that we will no longer be able to hear or hear as well compared to when ...
Philly Park Officials Criticized for Installing Devices That Blare High-Frequency Noise at Young People
Gizmodo - Sat 6 Jul 19There is growing criticism of Philadelphia officials’ decision to install sonic devices called the Mosquito that constantly emit extremely loud, high-frequency noise from 10:00 p.m. to 6:00 ...