| CPC H04R 1/2873 (2013.01) [G10K 11/178 (2013.01); H04R 1/025 (2013.01); G10K 2210/32272 (2013.01)] | 14 Claims |
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1. A loudspeaker system comprising a loudspeaker assembly and a headrest,
the headrest comprising a front side and a side different from the front side referred to as rear side, the front side being constituted for resting a back side of a head of a person thereon;
the loudspeaker assembly being accommodated in the headrest with its front side oriented towards the front side of the headrest, the loudspeaker assembly comprising:
a first and a second driver, each driver having a primary side and a secondary side for respectively emitting sound;
a first and second chamber, a part of the first chamber being limited by the primary side of the first driver and a part of the second chamber being limited by the primary side of the second driver;
a first front set of vent ducts venting the first chamber and terminating at the front side of the headrest and a second front set of vent ducts venting the second chamber and terminating at the front side of the headrest; and
at least one further chamber and at least one rear set of vent ducts; wherein
the secondary sides of the first and second drivers limit a part of one of the at least one further chamber or respectively limit a part of different ones of the at least one further chamber, the at least one further chambers being respectively vented by a respective one of the at least one rear set of vent ducts terminating at the rear side of the headrest; and
the first and second chambers together with the front ducts form front Helmholtz resonators, the at least one further chamber together with the at least one rear set of vent ducts form at least one rear Helmholtz resonator.
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