4 ms·
Yes, sometimes, if trapped between two parallel walls where an emergency vehicle passes, the loudness can be doubled (+6dB SPL) as the reflected waves meet in-p
by nonrandomstring 4y ago
Yes, sometimes, if trapped between two parallel walls where an
emergency vehicle passes, the loudness can be doubled (+6dB SPL) as
the reflected waves meet in-phase. This crosses the level causing
hearing damage. But because the vehicle is moving we currently dodge
classifying this as harm/assault by counting it as a transient rather
than sustained exposure.
- easytiger 4y agoInteresting. I live in central London and moved flat a few years ago. Only noise issues i had were motorcycles with modified exhausts and emergency sirens. It's really quite confusing why they are considered necessary. New flat is high up and has 3 inch thick windows so we can't hear a thing unless its really nearby. But i have the door open sometimes and you can hear what sounds like a massive terrorist response of emergency sirens. THe you look over and see its one ambulance traversing traffic in an area with many angled buildings. I recall years ago there was a plan to move them to white noise based systems. What happened with that