| 摘要 |
The earphone comprises an acoustic waveguide 305 for coupling sound waves from an acoustic transducer into an ear. The waveguide has an outer end 315 and an inner end 320. The acoustic transducer 310 is arranged at the outer end 315 of the acoustic waveguide and the inner end 320 of the acoustic waveguide is configured to be located in the ear canal. The acoustic waveguide 305 has a neck 340 between the outer end 315 and the inner end 320, and has a cross section at the neck that is smaller than a cross section at each of the outer end and the inner end. The neck 340 is preferably situated at a bend in the waveguide. |
