Logitech today announced its Logitech Noise Canceling Headphones, which deliver premium noise canceling technology for an unmatched price performance. Using Logitech SilentSound noise canceling technology, the headphones filter out environmental noise over a broad range of frequencies, including the sound of a jet engine, a fan, or an office air conditioner. The headphones remove up to 22 decibels, and 92 percent, of background noise — a level comparable to other noise canceling headphones, even those that are twice the price, according to the company: " "Logitech's headphones outperform other products in their price range, which typically claim to remove 10-18 decibels of noise." They will be available in Europe and in the U.S. beginning in April for $150. Logitech also debuted a black version of its mm50 Portable Speakers for iPod.