Abstract: A loudspeaker system includes: a loudspeaker; a loudspeaker box provided inside a seat, and in which the loudspeaker is provided; and an actuator. The actuator is provided inside the loudspeaker box to cause a baffle panel of the loudspeaker box to generate vibration.

Abstract: A signal processing device for reproducing a musical piece from one or more loudspeakers and one or more actuators that are provided in a seat includes: an obtainer that obtains data of a plurality of tracks that constitute the musical piece; and an outputter that outputs an acoustic signal included in data of a track among data of the plurality of tracks to the one or more actuators, and outputs an acoustic signal included in data of another track among the plurality of tracks to any loudspeaker among the one or more loudspeakers.

Abstract: A signal processing device for reproducing a musical piece from one or more loudspeakers and one or more actuators that are provided in a seat includes: an obtainer that obtains data of the musical piece; and an outputter that outputs an acoustic signal of a first frequency band included in the data of the musical piece to the one or more actuators, and outputs an acoustic signal of a frequency band excluding the first frequency band to the one or more loudspeakers, the frequency band being included in the data of the musical piece. The first frequency band is a band including a resonance frequency of the one or more actuators.

Abstract: A sub cone for use in a loudspeaker includes a slanted portion that has an aperture area that increases toward an emission direction in which sound is emitted from the loudspeaker and a rim portion that is annular in shape and extends linearly outward from an edge of a distal end of the slanted portion in a direction orthogonal to the emission direction.