JPS5840798

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DESCRIPTION JPS5840798
[0001]
Brief description of the drawings
[0002]
FIG. 1 is a longitudinal sectional view of a conventional sound producing device. Fig. 2 is a model
diagram for explaining the parameters contributing to the sounding frequency characteristics!
FIG. 3 is a longitudinal sectional view of the sound generation device according to the present
invention. 4 and 5 are frequency characteristics. 13 ... bottomed cylindrical case, 14.15 ... stepped
portion, 18 ... diaphragm, 22 ... electromagnetic block, 26 ... resonance chamber, 27 ... resonance
lid.
03-05-2019
1