Title:
Sound field control device, sound field control system and sound field control method
Document Type and Number:
Japanese Patent JP6348769
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To control a sound field so that important sound information is audible independently in each region in a closed space.SOLUTION: A sound field controller 100 for controlling, in a closed space including a plurality of speakers 300, a sound field in the closed space formed by a plurality of pieces of input sound information comprises: an acoustic signal generation unit 103 for generating, for each of the plurality of pieces of sound information, a plurality of acoustic signals through a filter having a filter factor according to a transmission target region for each sound information; a signal summation unit 104 for summing up the plurality of acoustic signals; and a sound output unit 105 for supplying the summed acoustic signal to the plurality of speakers 300. The filter factor is calculated on the basis of a transfer matrix from the plurality of speakers 300 to a plurality of regions in the closed space and target sound fields in the plurality of regions.
More Like This:
Inventors:
Takeshi Toi
Tetsuhiko Arimitsu
Rui Ohno
Tetsuhiko Arimitsu
Rui Ohno
Application Number:
JP2014095359A
Publication Date:
June 27, 2018
Filing Date:
May 02, 2014
Export Citation:
Assignee:
Chuo University
Nissan Motor Co., Ltd
Nissan Motor Co., Ltd
International Classes:
H04S7/00; B60R11/02; H04R3/00
Domestic Patent References:
| JP6225397A |
Foreign References:
| WO2007004433A1 | ||||
| WO2013135819A1 |
Attorney, Agent or Firm:
Kenji Sugimura
Osamu Suzuki
Yuro Yoshizawa
Osamu Suzuki
Yuro Yoshizawa