Mfb speaker system with controllable speaker vibration...

Details Mfb speaker system with controllable speaker vibration... Mfb speaker system with controllable speaker vibration...

H - Electricity

04

R

H04R 9/06 (2006.01) H04R 3/00 (2006.01)

Patent

CA 2281117

An acoustic signal is input to a first voice coil of a speaker unit. A vibration information detecting unit comprised of a vibrational displacement detecting unit, a vibrational velocity detecting unit, a vibrational acceleration detecting unit, amplifiers, and an adder adds a signal indicating the vibrational displacement x, a signal indicating the vibrational velocity v and a signal indicating the vibrational acceleration .alpha.. A power amplifier inputs the sum signal to a second voice coil of the speaker unit using a positive feedback or negative feedback.

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