Indiana Hearing Loops

From Lawn Mowers To Rock Concerts, Our 'Deafening World' Is Hurting Our Ears Volume Control author David Owen says our ears largely evolved in a far quieter time than the one we currently live in. He warns that the ambient noises that surround us pose a threat to our hearing.

Some great info "hear" :)

Effects of Hearing Loop Systems on Speech Understanding and Sound Quality of Normal-hearing Listeners and Hearing Aid Users In theory, hearing loop systems can increase signal level, reduce background noise and reverberation, and increase the signal-to-noise ratio (SNR) in large listening areas.