Title:
SOUND-INSULATION-MATERIAL SIZE CALCULATION DEVICE AND SOUND-INSULATION-MATERIAL SIZE CALCULATION PROGRAM
Document Type and Number:
Japanese Patent JP2018206104
Kind Code:
A
Abstract:
To provide a sound-insulation-material size calculation device capable of obtaining a minimum necessary size of an arbitrary shape of a sound insulation material in order to set a noise level at a sound receiving point to a target value.SOLUTION: The sound-insulation-material size calculation device first sets a target noise correction amount at a sound receiving point based on a target sound noise level. Subsequently, an operation of calculating path differences of a two-dimensional diffraction path diffracted at the upper, lower, left and right edges of a sound insulation material are calculated for the set target noise correction amount, a position and a size of the sound insulation material are calculated from the path differences, and a noise correction amount for the sound insulation material on the position and of the size is calculated from an acoustic level calculation by a three-dimensional shortest diffraction path. These operations are repeated until the target noise correction amount is reached. Finally, the positions and sizes of the sound insulation material calculated for sets of individual noise points and individual sound receiving points are graphically output on a same figure screen. As a result, minimum necessary height and extension of the sound insulating material are calculated for the target noise level.SELECTED DRAWING: Figure 3
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Inventors:
HORIE KENJI
Application Number:
JP2017111394A
Publication Date:
December 27, 2018
Filing Date:
June 06, 2017
Export Citation:
Assignee:
KANKYO RELATIONSHIP LLC
International Classes:
G06F17/50; E01F8/00; G01H3/00; G01H17/00
Attorney, Agent or Firm:
Kazuto Ishida