音響ホログラフィに関する研究 : 各種形状のホログラムにおける再生式について

概要

論文の詳細を見る
In the previous report, a new method which detects sound sources with high accuracy using a hemispherical hologram was discussed. However, it does not hold for all sound sources. To make highly accurate acoustical holography applicable to all sound sources, methods using a rectangular parallelepiped, a hemicylindrical and a plane hologram were discussed. Firstly, reconstruction formulae for these methods were deduced. Secondly, to test the validity of the formulae and the characteristics of these methods, a numerical calculation was carried out. Consequently the validity of these formulae was confirmed and it was shown that it is suitable to use a hemispherical or a rectangular parallelepiped hologram for statinary sound sources and a hemicylindrical hologram for sound sources which move linearly with constant velocity. Finally, examples of the application to actual sound sources were shown.
一般社団法人日本機械学会の論文
1986-09-25