The object of the present invention is to provide an acoustic vibration
system with a speaker for air mattresses. This vibration system includes
an air mattress (20) consisting of a sealed body and inflated with air.
One or more speakers (30) are mounted on the sealed body of the mattress,
and are connected to an external audio system (31). The speakers (30)
thus convert electrical energy outputted from the audio system (31) into
sound energy, and radiate the sound energy into air inside the mattress
(20), thus acoustically vibrating the mattress. In the vibration system,
the sealed body of the mattress is made of a three-dimensional woven
fabric (1) such that the sealed body has a desired durability and
effectively resists expansion pressure. A coated layer is formed on the
internal surface of the woven fabric (1) so as to prevent a flow of air
through the fabric.