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Brief description of the drawings
1 and 2 are a plan view and a block diagram respectively showing the appearance and circuit
configuration of the conventional example, and FIGS. 3a and 3b are perspective views
respectively showing different states of use of the device to which the device according to the
present invention is applied. 4 is a simplified view showing the circuit configuration of the device
of FIG. 3, FIG. 5 is a perspective view showing a specific example of a portion of the device of FIG.
3, and FIG. 6 is an enlarged view of a portion of FIG. is there. 11 ... body, 12a, 12b ... speaker box,
24a, 25a, 24b, 25b-... · movable contact, Spa, Spb ... speaker.