earplugs

Smart earplugs know when it's too loud

When it comes to the health of your hearing, how much noise is too much noise? Sometimes it's hard to know.

A pair of intelligent earplugs, however, can make that determination for you. In quiet environments, the Quietpro+ earplugs "open" so wearers can hear normally. When the noise level rises, the 'plugs automatically filter out the clamor while continuing to let speech through.

The earplugs, from Norwegian company Nacre, are already in use by the U.S. Army, special operations forces, Navy, and Marines, as well as NATO forces (the Air Force has its own ear-protecting gear). … Read more

Selling the sounds of silence

It's a noisy world and getting noisier all the time. No wonder sales of noise-canceling and noise-isolating headphones are booming.

Dwight Garner's New York Times article, "Meditations on Noise" reports on three books covering the impact of sound and noise on our lives.

Noise is usually classified as unwanted sound, but one person's noise is another's bliss. I've always been fascinated by electric guitar distortion, which can sound beautiful. Musicians such as Link Wray, Jimi Hendrix, Neil Young, and Jonny Greenwood mastered the art of noise. Why humans like such unnatural sound is a mystery to me, but it appeals on a primitive, strangely organic level. That, or it's noise, ugly, nerve-wracking, unwanted sound. Indulging in loud music can be risky business; if you occasionally experience "ringing in the ears" after exposure to loud sounds or concerts, you may be losing your hearing.

Garner looks at three books: Garret Keizer's "The Unwanted Sound of Everything We Want: A Book About Noise" (PublicAffairs); "Zero Decibels: The Quest for Absolute Silence" (Scribner), by George Michelsen Foy; and "In Pursuit of Silence: Listening for Meaning in a World of Noise" (Doubleday), by George Prochnik.

I never thought about it until I read the article, but noise exposure has social and political aspects. Garner put it this way: "You can judge a person's clout--his or her social and political standing--by witnessing how much racket he or she must regularly endure." Right, money can buy whatever degree of solitude you need.

Technology may be the source of much of the aural bombardment, but it also offers remedies. We can block out some of the din with our iPods and such, but using music to mask noise can be dangerous. When earbuds and other headphones don't hush outside noise you have to turn up the volume louder than the noise to hear the tunes, so you're compounding the problem. That's why noise-canceling and noise-isolating headphones are such a good idea; they let you turn the volume down and still hear more of the music.

Reducing background noise, in and of itself, lets you hear more deeply into the music. It's not a small, audiophiles-only distinction. Noise masks the subtle stuff, so you can't hear the reverberation surrounding a singer's vocal, or the gentle strum of an acoustic guitar. When the background noise level is high you only hear the louder sounds in the music. Listening "through" noise is stressful and fatiguing; mute the noise and you hear more and feel better. … Read more

Just what the world needs--another amateur guitar helper

The world has another gadget to help amateur guitar players--which isn't necessarily a good thing. A few months back, it seemed that products aimed at Slash wannabes were coming out every day, from Volkswagens to air guitar T-shirts. It was enough to make us wonder if digital technology wasn't such a great idea after all.

Now we hear of a new MP3 player for musicians from Tascam, which basically slows down tunes so you can play along at your own pace. You can also edit out the guitar parts of songs, allowing you to fill the gaps with … Read more

Yeah, that's what we need--a dance machine

That was a close one. Just when we were about to order a few dozen Ford twin-simulators as stocking stuffers, we spotted this item on BornRich: the "Dance Dance Revolution Super Nova."

We didn't even know that these things could be bought retail. The last place we saw one was probably at Chuck E. Cheese's. But now, in addition to having our eardrums blasted out with these at kindergarten birthday parties, we can enjoy them at home too. And it's even on sale, at Amazon for only $18,000. How much luckier can we get?… Read more

'Silent jet' could save your hearing

If you're about to go deaf from living near an airport, there's hope. Researchers at Cambridge and MIT are unveiling a "silent jet" that uses military stealth technologies to muffle noisy planes.

Rather than the standard tube-and-wing design of commercial airliners today, the jet is a "flying wing" like the stealth bombers developed in secret a couple of decades ago. If it works, researchers say the plane will make about as much noise as a washing machine. But don't start buying up cheap property along flight paths anytime soon--the earliest these jets are … Read more