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BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a central longitudinal sectional view, and FIGS.
2A and 2B are perspective views showing a shield, respectively. 1 ····························· 1 1 2 1 81
DETAILED DESCRIPTION OF THE INVENTION This invention is used in an electronic organ or the
like, and by applying modulation to the sound wave emitted from the speaker, it is intended to
obtain special sound effects such as tremolo or local vibrato effect. It relates to the improvement
of the device. Hereinafter, the seven practical examples will be described based on the drawings.
That is, FIG. 1 shows the whole of the reproducing apparatus as a partial sectional view, (1)
shows a Fi speaker, and the speaker with the speaker is scattered in front of the opening (3) of
the baffle (2) (1) The light emitting surface is attached so as to have one core (4'l indicates a first
one covering body for dipping the front radiation surface of the speaker (1). This first shield, as
shown in FIG. 2 (13), is a part of an opening (cylindrical with an opening (a weir) and is mounted
on its lower surface by a motor (6) every second Rotate the number ˜! [i! It's like I'm going to
be rotated with my mother's band-up I have been eliminated. In the drawings, (7) and (71 (8)
indicate the first clean cover (a frame for holding the .phi. And motor (6) at a predetermined
position). Father, in the figure (Engagement shows the second clear cover covering the rear
emission V surface of the manual note speaker (1), and this second clear bell is partially shown in
FIG. 2 (A). The motor is attached to the bottom of the opening (1) and is attached to the bottom
surface of the motor (1) so that it can be rotated with a speed bird of 敬-dozens of turns # All.
There is. In addition, (12) <14> (73) The frame for holding the squashing body (9) and the motor
(1) of the above-mentioned assemblage 2 of the aforementioned company 2 is shown in a
predetermined position. Then, an audio current is introduced to the manual speaker (1), and the
first rod body (chrysanthemum and the second powder body (if the motor is rotated by a motor
(6 NJ), the first and twentieth (4) (9 (9+ openings (5, 10) respectively) move along the
circumferential direction to give doppler effect to the sound wave from the speaker (1). Thus, the
listener can hear this as a tremolo or vibrato effect. In addition, by changing the rotational speeds
of the first and second tracking members, respectively, the relative speed causes wrinkling, which
the listener can take as a more complex modulation effect. it can. It is possible to bring about
further different modulation effects by reversing the same direction of rotation of the father and
the other. The above shows one embodiment of the present invention, and the present invention
is not limited to the above-described special embodiment. For example, the shapes of the first and
second one-cover bodies are not limited to those shown in the illustrated example, and the
number of the openings provided in the father's, clean-up body and the size thereof are also
designed Above, any value can be chosen.
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