| 摘要 |
PROBLEM TO BE SOLVED: To provide a loudspeaker apparatus capable of further expanding a low-frequency reproduction band. SOLUTION: A loudspeaker apparatus according to the present invention comprises housing, an adsorptive material provided inside the housing, for physically adsorbing gas inside the housing, a vibration section including a diaphragm and provided to an opening part formed in the housing, a drive section for driving the diaphragm to generate sound from the diaphragm, and a negative stiffness generating mechanism provided inside the housing, for reducing an acoustic stiffness inside the housing, the acoustic stiffness acting on the diaphragm. COPYRIGHT: (C)2007,JPO&INPIT
|
