Title:
【発明の名称】劇場用スピーカ及びスクリーン装置
Document Type and Number:
Japanese Patent JP2575318
Kind Code:
B2
Abstract:
A motion picture loudspeaker system is described in which the loudspeaker elements are integral with an acoustical boundary wall such that the characteristics of the vented box woofers are optimized. In order to overcome high reflection problems as sound from the tweeters is reflected by the motion picture screen and the acoustical boundary wall, frequency dependent acoustical absorptive material is attached to the wall to inhibit high frequency reflections with minimal effect on the bass optimization. The system includes the use of a steep slope crossover netowrk having a crossover frequency such that there is a first order match of the woofer and tweeter dispersion at the crossover.
Inventors:
TOMURINSON HORUMAN
Application Number:
JP33678989A
Publication Date:
January 22, 1997
Filing Date:
December 27, 1989
Export Citation:
Assignee:
RUUKASUAATSU ENTAATEIMENTO CO
International Classes:
G03B21/56; H04R1/02; H04R1/26; H04R1/28; H04R1/40; H04R3/00; H04R3/04; H04R3/14; H04R27/00; (IPC1-7): H04R1/02; H04R1/26; H04R3/14
Domestic Patent References:
| JP5150024U | ||||
| JP5723985Y2 |
Attorney, Agent or Firm:
Yuzo Yamazaki (2 outside)