| 摘要 |
The sound rigging device comprising earphones 13a, 13b for the occupant of the armchair is incorporated in a headrest which forms an integral part of an armchair or is connected removably to an armchair, in such a way that the earphones participate in the lateral rotational movements of the occupant's head. The device comprises a pick-up for ambient messages and a system for broadcasting these messages through the earphones in superposition with the audiophonic information originating from an external sound rigging source. Application: for example, to dentists' chairs. <IMAGE>
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