Title:
THREE-DIMENSIONAL WOOFER DRIVE CIRCUIT
Document Type and Number:
Japanese Patent JP3324525
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a three-dimensional woofer drive circuit by which a three- dimensional system is miniaturized at a low cost.
SOLUTION: This three-dimensional woofer drive circuit for a three- dimensional system 30 includes two resistors 38a, 38b used to combine L and R channel sound signals. Both electrodes of a capacitor 40 and two fixed terminals of a variable resistor 42 acting as part of a low-pass filter are respectively connected between a connecting point of the resistors 38a, 38b and a ground terminal whose level is a reference level. A loudspeaker terminal of a woofer 46 is connected to the slider of the variable resistor 42 via a buffer amplifier 44.
Inventors:
Takeshi Nakamura
Application Number:
JP27971698A
Publication Date:
September 17, 2002
Filing Date:
October 01, 1998
Export Citation:
Assignee:
MURATA MANUFACTURING CO.,LTD.
International Classes:
H04R5/04; H03F3/68; H04R1/26; H04R3/00; H04R3/14; H04S5/02; H04R5/02; (IPC1-7): H04R3/00; H03F3/68; H04R5/04; H04S5/02
Domestic Patent References:
| JP3145897A | ||||
| JP59119689U | ||||
| JP59195897U | ||||
| JP6035878B1 |
Attorney, Agent or Firm:
Michihiro Okada