To implement an earphone system which obtains the same perception as presence of an original sound field space by canceling the individual difference in shape of listeners' ear auricles/cavum conchae.
A cage dome 6 is installed in a space having an actual sound source 2 (original sound field space 1) so as to have the center located at an ear canal entrance 4 approximately, and sound pressure signals at a plurality of lattice points 7 of the cage dome 6 due to a sound wave radiated from the actual sound source 2 are observed. In a separately different place (reproduced sound field space 8), sound waves of sound pressure signals identical to the observed sound pressure signals are radiated from one or more lattice points 7 of the cage dome 6 to the ear canal entrance 4 or a cavum conchae 5.
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HOKARI HARUHIDE
YOSHIDA MASATAKA
Maki Reiko
Kimio Kikutani