Title:
SPEAKER EQUIPMENT
Document Type and Number:
Japanese Patent JP3205625
Kind Code:
B2
Abstract:
PURPOSE: To emit a sound from a speaker with a desired directivity by employing the speaker directivity control technology.
CONSTITUTION: The speaker equipment is provided with plural speaker unit groups 26 arranged at least in a line and digital filter groups 22 respectively connecting to the plural speaker unit groups 26. Plural audio signals are inputted in common to each digital filter and a characteristic of each digital filter is respectively revised with respect to the plural audio signals to allow a correspondent speaker unit to have a desired directivity for the plural audio signals. When 1st and 2nd signals are inputted to digital filters DF1-DFm, the digital filters DF1-DFm apply parallel processing to the two inputted audio signals to allow the speaker unit group 26 to have a desired beam directivity. Thus, a signal is sounded from the speaker with the desired directivity.
Inventors:
Hirofumi Yanagawa
papier-mâché blue
papier-mâché blue
Application Number:
JP132193A
Publication Date:
September 04, 2001
Filing Date:
January 07, 1993
Export Citation:
Assignee:
Pioneer Corporation
International Classes:
H04R1/40; H03H17/00; H03H17/06; H04R3/12; H04R27/00; (IPC1-7): H04R3/12; H03H17/06; H04R1/40
Domestic Patent References:
| JP2239798A | ||||
| JP576899A |
Attorney, Agent or Firm:
Yasuo Ishikawa