| 摘要 |
PCT No. PCT/JP94/01877 Sec. 371 Date Jul. 31, 1995 Sec. 102(e) Date Jul. 31, 1995 PCT Filed Nov. 8, 1994 PCT Pub. No. WO95/13690 PCT Pub. Date May 18, 1995According to the present invention, when an audio signal is reproduced through headphones, the same localization, sound field and so on as those obtained when the sound is reproduced by loudspeakers located in a predetermined relationship upon reproduction of the sound by the loudspeakers can be obtained. Particularly, gyration of a head of a listener is detected by using a vibratory gyroscope suitable for detection of the gyration of the head. Even when a vibratory gyroscope (175A), (175B) or (175C) is attached to an attachment position which is a head band (177) of a headphones (170) or a left arm (17L) or a right arm (17R) thereof, it is possible to detect the gyration of the head of the listener.
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