| 摘要 |
PROBLEM TO BE SOLVED: To make an inexpensive and simple music box equipped with a plurality of whistles as sound source elements and to make its sounding timbre full of variety. SOLUTION: The music box is equipped with a plurality of whistles (tubular sounding bodies) 11a, 11b, etc., and air blowing parts 20a, 20b, etc., corresponding to the respective whistles 11a, 11b, etc. The air blowing parts 20a, 20b, etc., supply air blasts to the whistles 11a, 11b, etc., by varying the capacities of air chambers such as respective pump parts 22a, 22b, etc. Pump driving means 30a, 30b, etc., vary the capacities of the respective air chambers of the pump parts 22a, 22b, etc., according to playing information. The whistles 11a, 11b, etc., are equipped with tube length varying means 12a and 12b of varying and setting tube length according to the playing information. COPYRIGHT: (C)2005,JPO&NCIPI
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