| 摘要 |
PROBLEM TO BE SOLVED: To provide a stacked compound acoustic system which maintains sound image localization satisfactorily even though acoustic systems with various different opening dimensions are combined with each other and has high flatness of a sound pressure frequency characteristic to provide high sound quality. SOLUTION: In this stacked compound acoustic system which has a plurality of acoustic systems with different central values of reproduction frequency areas and in which the plurality of acoustic systems are stacked and mounted in a housing so as to make sound wave radiation directions to be the same direction, the respective acoustic systems are arranged separately from one another across a space area, and the housing has a sound emitting hole for radiating sound waves outputted from the acoustic system arranged at a post stage via the space area with respect to the sound wave radiation directions. COPYRIGHT: (C)2006,JPO&NCIPI
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