Patent ID: 8073149

Claim:
A loudspeaker device comprising: a loudspeaker which includes a diaphragm, a support system component including an edge and damper for supporting the diaphragm so as to allow the diaphragm to vibrate, and a voice coil which produces a driving force which causes the diaphragm to vibrate; a feedforward processing section for performing feedforward processing on an electric signal to be inputted to the loudspeaker based on a filter coefficient which includes at least a fixed parameter in which a vibration displacement characteristic indicating a stiffness of the support system component with respect to a vibration displacement of the diaphragm is modeled and a fixed parameter in which a vibration displacement characteristic indicating a force coefficient with respect to the vibration displacement of the diaphragm which is applied to the voice coil is modeled, the filter coefficient being set so as to cancel a non-linear component of each parameter; and a feedback processing section for detecting vibration of the diaphragm, and performing feedback processing on an electric signal concerning the vibration with respect to the electric signal to be inputted to the loudspeaker, wherein the feedback processing section performs feedback processing on the electric signal concerning the vibration so that a change of the vibration displacement characteristic indicating the stiffness of the support system component is cancelled and so that a frequency characteristic concerning the vibration of the diaphragm becomes a desired frequency characteristic.