Improve Your Hearing With Vision

Ant writes "CNET News.com reports that there is a new pair of "hearing glasses," hearing-impaired people might both see and hear better--and have better social lives. A novel pair of glasses recently released on the market not only improve bad eyesight, but also work as a hearing aid. Developed by the Delft University of Technology and Dutch company Varibel, the glasses promise to keep hearing-impaired people active and social. While in-ear hearing aids usually work well for conversation in quiet surroundings, many people who wear them face problems in more lively environments. Since all incoming sounds are amplified, background noises easily take over, cause discomfort and make conversations difficult. Varibel says its glasses can detect which direction sounds come from, amplifying words spoken directly to the wearer while dampening background noise."

Comments

The "big secret" is simply directional microphones

[SachiCALaw]

If you read TFA, the way the "glasses" work has nothing to do with seeing. The manufacturer puts four microphones in each sidepiece of the glasses, tuned so that they focus more on sound to the front of the wearer instead of sound to the sides or the back. I'm very hard of hearing (I had meningitis as little kid) and used hearing aids for years. Many of the behind-the-ear hearing aids have directional mikes already. I'm not sure how much this gadget would help; perhaps with the multiple mikes it could offer more signals to play with.

Re:Traditional Hearing Aids

[hankwang]

My vision already sucks, I know when I get older my hearing will probably follow.

Decrease in hearing with aging is for a large part the cumulative effect of exposure to noise: It has been demonstrated that the most important factor of hearing degradation is not aging alone, but rather the cumulative long-term exposure to environmental and occupational noise that create the harm The standard guideline of 40 h/week at 85 dB(A) is way too lax from a medical point of view; 70 dB(A) (30 times lower acoustic power) would be more reasonable. So you yourself can for a great part affect how much of your hearing you will be losing.

For your information: I tested with a decibel meter how loud 70 dB(A) and 85 dB(A) are on a headphone. Well, 85 dB sounds to me like a nice listening volume, and someone sitting very close to you in the train might even hear some noise escaping from your headphone. (I used an over-ear open headphone). It boggles my mind what people in the train are doing to their ears when I hear their music coming out of their earbuds over the background noise from 3 meters distance.

As you can guess, 70 dB is actually quite soft. It might work in a quiet environment, but anywhere else you will clearly hear environmental sounds.