When I have insomnia, I hear every car and conversation that passes outside my house. Or perhaps it would be more accurate to say that when I hear every car and conversation outside my house, I get ...

Vibration-absorbing, sound-damping materials such as sheets of rubber and expanded foam tend to be thick, bulky and soft. A new material is a big exception to that tendency, however, as it absorbs ...

The ED Series subminiature speakers employ a ferrofluid damping technique, which uses a viscous liquid (ferrofluid) that is injected into the receiverÕs motor to reduce the armature excursion near ...