Sounds good

 作者:崔奏蛑     |      日期:2019-03-07 08:06:09
By Barry Fox British company B&W believes it has found a way to improve the sound fidelity from loudspeakers (WO 98/51121). B&W previously tried using a tapered pipe at the rear of the vibrating speaker cone to soak up unwanted sound, but resonances spoilt the effect. So it now puts the cone inside a plastic sphere, which connects to a tapered tube filled with glass fibre. Using the sphere pushes the unwanted resonance down to 40 hertz,