Akustisk overföringsforbindelse, hodetelefon med akustisk overföringsforbindelse, og anvendelser av den akustiske overföringsforbindelsen

摘要

An acoustic transmission connection, e.g. for a headset (13), comprises a sound tube (2) through which speech signals can be transmitted from a first end (16) to a transducer, e.g. a microphone, in a housing or a housing part (3) of the headset. In the sound tube (2) and in the housing part (3), means are provided for acoustic impedance matching and possibly means for achieving acoustic directivity.