| 摘要 |
There is provided an earphone having at least one housing (10) and at least one electroacoustic transducer (20) having a first and a second surface (21, 22). The earphone further has a first volume (100) defined by the first surface (21) of the electroacoustic transducer (20) and by a first end (12) of the housing (10), and a second volume (200) defined by the second surface (22) of the electroacoustic transducer (20) and by a second end (11) of the housing (10). An opening (300) is provided between the first and second volumes (100, 200). A closing unit (30) serves to at least partially close the opening (300).
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