After doing a lot of plane travel with the annoying drone of the engines, Joanne Manaster found herself in need of some noise cancelling headphones. According to her post on PsiVid:
“Although I understand the physics (and accompanying math-specifically trigonometry) of how the earphones work, I was uncertain if the technology was sophisticated enough to cancel ambient noise for the average flyer (at a reasonable price).”
The views expressed are those of the author(s) and are not necessarily those of Scientific American.
ABOUT THE AUTHOR(S)
Carin Bondar is a biologist, writer and film-maker with a PhD in population ecology from the University of British Columbia. Find Dr. Bondar online at www.carinbondar.com, on twitter @drbondar or on her facebook page: Dr. Carin Bondar – Biologist With a Twist.