“Independent Researcher, Librarian, Music Educator and Composer" - Ted Hunter

Public and Environmental Health - Noise Reduction



Noise level is measured in decibels (dB). The louder the noise, the higher the decibels. Decibels can be adjusted to human hearing. Noise level is thus described in decibels A (dBA). The effects of noise vary with the noise to which a person is exposed. Prolonged exposure to loud noises (75 dBA over eight hours a day for years) can lead to hearing loss. The body can also respond to lower noise levels: sleep can be disturbed by an outdoor noise of 40 dBA.


Protect Your Hearing: Intensity and Duration of Noise








Why Noise Pollution Is More Dangerous Than We Think



Why noise is bad for your health -- and what you can do about it | Mathias Basner



Comments

Popular Posts - Last 30 days

The Matrix Deciphered - by Robert Duncan

Patent No. 5159703 Silent subliminal presentation system

Patent No. 6506148 Nervous system manipulation by EM Fields from monitors

Full Documentary | “An Invisible Threat — Are Microwave Radiation Waves Killing Us?”

Eric Hecker - V2k & Syntactic Telepathy and Mind Control

Patent No. 4545065 Extrema coding signal processing method and apparatus

Patent No. 4692118 Video subconscious display attachment

DECLASSIFIED - Bioeffects of Non-Lethal Weapons

Patent No. 5356368 Method of and apparatus for inducing desired states of consciousness

Understanding Vibration and Resonance