ACOUSTIC SYSTEM

PROBLEM TO BE SOLVED: To provide an acoustic system capable of providing a prescribed acoustic environment independently of the number of seated listeners and an operating state of an ON/OFF operation switch. SOLUTION: The acoustic system 1 includes: a woofer 8 embedded under a lower part of a backrest toward the front side of a seat 2; a sensor 12 for sensing the presence/absence of a listener A seated on the seat 2; an output selection means 11 capable of operating ON/OFF of an acoustic output of the woofer 8; an auxiliary speaker 9 capable of transmitting an acoustic signal with a low frequency sound to the listener A independently of the state of the listener A onto the seat 2; and an acoustic output means 10 for outputting the acoustic signal. The acoustic output means 10 revises a signal level of the acoustic signal outputted to the auxiliary speaker 9 in response to the presence/absence of the listener A and the ON/OFF state of the acoustic output. COPYRIGHT: (C)2007,JPO&INPIT