For many Americans, music and podcasts serve as a constant soundtrack to their daily routines. In offices with open floor plans, workers don headphones to block out noise. Others couldn't get through a workout or their daily commute without music pumping through earbuds. Studies have come to differing conclusions about whether listening to music helps or hinders productivity. More troubling is the increase in permanent hearing loss associated with headphone use. We consider the technology, culture and safe use of this ubiquitous accessory.
How Loud Is That Sound?
Loudness is measured in decibles. Hearing loss can occur when you have prolonged exposure to a noise source over 90 dB. Sound on most MP3 players reaches up to 110 dB -- that's 25 dB higher than the recommended maximum listening volume. For comparison, this is how loud some common environmental sounds are:
NPR's Kelly McEvers speaks with Paul Farhi of the Washington Post about Gay Talese's new book, The Voyeur's Hotel. The credibility of the book, which follows a self-proclaimed sex researcher who bought a hotel to spy on his guests through ventilator windows, has been called into question after Farhi uncovered problems with Talese's story.
The Obama administration issued a long awaited report Friday, documenting the number on civilians who have been accidentally killed by U.S. drone strikes. Human rights activists welcome the administration's newfound transparency, though some question whether the report goes far enough.
The National Highway Traffic Safety Administration is investigating a fatal crash involving a Tesla car using the "autopilot" feature. NPR's Robert Siegel talks to Alex Davies of Wired about the crash and what it means for self-driving car technology.
When you give to WAMU, your tax-deductible membership gift helps make possible award-winning programs such as Morning Edition, All Things Considered, The Diane Rehm Show, The Kojo Nnamdi Show, and other favorites.