Title:
ACOUSTIC REPRODUCING DEVICE
Document Type and Number:
Japanese Patent JP3260078
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To realize an acoustic reproducing device with a small-sized speaker system, in which disturbance of a characteristic due to interference of sound emitted from a rear side of a reproduction speaker is prevented so as to attain excellent high frequency sound and low frequency sound reproduction.
SOLUTION: A reproduction speaker 1 and a silencing speaker 2 are arranged and the speaker system is configured in a way that sound emitted from a rear side of the reproduction speaker 1 is cancelled by a radiation sound from the silencing speaker 2 so that the sound from the speaker 1 is not bypassed to the front side. In this case, a reproduction signal is delayed by a delay device 15 to drive the reproduction speaker 1 by a delay time nearly in matching with a time to process a signal to be inputted to the silencing speaker 2 by using the reproduction signal for a reference signal.
Inventors:
Junichi Hayakawa
Application Number:
JP12229896A
Publication Date:
February 25, 2002
Filing Date:
April 19, 1996
Export Citation:
Assignee:
Kenwood Corporation
International Classes:
H04R1/40; G10K11/178; H03H21/00; H04R3/00; (IPC1-7): H04R3/00; G10K11/178; H03H21/00; H04R1/40
Domestic Patent References:
| JP548498U | ||||
| JP59094U |
Attorney, Agent or Firm:
Masao Shibata