| 摘要 |
PROBLEM TO BE SOLVED: To obtain a speaker apparatus capable of establishing a wide sound field and a narrow sound field not obtained from one plane speaker without use of an electronic circuit and a particular specification amplifier. SOLUTION: A plurality of plane speakers 1 are disposed by at least one line or more in a container part 2. A weight factor of a sound electric signal applied to N plane speakers 1 is determined using Bessel function J<SB>m</SB>(p) and in accordance with the weight factor N plane speakers 1 are disposed. Hereby, there can be constructed a narrow sound field and a wide sound field not obtained from one plane speaker. COPYRIGHT: (C)2008,JPO&INPIT
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