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JPS4835343

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DESCRIPTION JPS4835343
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of a conventional
speaker, FIG. 2 is a waveform diagram of human power wave A and reflected wave B of the same
speaker, and FIG. 3 is a cross-sectional view of another conventional speaker 4 to 6 are each a
cross-sectional view of the main part of a conventional speaker, FIG. 7 is a cross-sectional view of
the speaker in one embodiment of the present invention, FIG. 8 is a schematic explanatory view
of another embodiment, and FIG. FIG. 2
иииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии Sound
absorbing material, 22 ииииииииии Electro-acoustic conversion vessel. Fig. 2/8 report "1 \ 4 Fig. 4 97
63 1 101 real opening 48-35 34 3 (2)-102-
[Detailed description of the invention] и The purpose of this technique is to absorb the radiation
sound of the back of the diaphragm of the horn nohi or dome-shaped speaker, and to improve
the transientness of the speaker. Aa и Highlight the conventional example with Fig. 1 to Fig. FIG. 1
shows a conventional small-sized speaker driver / iper, or a dome-shaped speaker, and j. Top
plate (bore plate (2), pole piece (8 entry v. Magne F) The vibration system is suspended from the
diaphragm (6) and the vibration system from the first and second coils (6) to the field section
consisting of (4). The sound is radiated to the back of the% diaphragm (6) when the voltage is
applied to the back of the diaphragm (6). Again, as shown in Fig. S '42 to make the diaphragm (5)
lI #; и even if the input wave (A) is over, it is the end, for the anti # 4 wave (B) и и The diaphragm
(6) is not damped, this is especially in the air, -t chamber (y), the diaphragm (5) t pole piece ( 3)
top surface 1. The arrival at the standing wave A swing point determined by the interval of ? (,
when dealing with a burst wave pulse, this is extremely 15. ? It was a serious drawback. LlrCe
41 to eliminate these disadvantages: ja, bc ** v + t, sfg + o, 60, $-/ l / e- '6' 2 (3). . , 9-1- (8) kkNt +
t ? 9, и m4 as shown in Fig. 5, with the bulge (9) 2 on the top surface of the pole piece (3), so
that the coating wave can be used 4 times, or Fig. 5 1- ░ no! 5 nicons atlO1) lliklj ,: no l'l 1 1 l G
2 absorption AM "II; as shown in Fig. 6, the pole piece (3) on i1, the dome shape of the 5
01-05-2019
1
'diaphragm (5) Absorbent material along the line, or ?Ping piece (2)? was placed to prevent, or
enough to eliminate the adverse effect of the reflected wave to the second degree tM ??, 2 ?.
11 ? ? ? ? ? t ? ? ? ? 2 ', t, 77; 4 4r] ?, ?-1: 2: Two. ??? ?? Explain to. 7 (e) are
horn-type through holes formed in the pole piece (3) and the F portion and the plate (4), and
?(2)? is the FIA opening of the second through hole (d) Sound absorption and material
provided in the department, upper S! In this embodiment of the structure, the vibration plate, the
sound radiated in the direction of the 11 # wedge proceeds in the old 1 and * m direction to the
gloss pattern of the through hole (e), and does not generate a reflected wave; It is 0 absorbed by
@J and the transient due to the reflected wave is reshaped.
The figure z * a shows another embodiment 1 of the present invention, and a ceramic in place of
the g & sound material (2) in the embodiment of the present invention. ? Provide 11E airacoustic conversion n (i) like kubaimorph. ? Feeder that adds this electric output to the input
wave in reverse phase, as shown in 589 Fig. 1, works to cancel the remaining reflected wave as a
whole, and as a whole thread ? Active It is possible to form a two-stage dumping, and to reshape
the transition. As is apparent from the above example of le1m (this invention is true for the case
of forming a through hole of 4B-35343- [144 !, a horn-shaped through-hole in the double-rubys
and Fall plate, and 6 in the present invention). The speaker is provided with an electric iFW
converter of sound absorbing material I or feedper or J1 at the Fjll1 part of the through hole, and
according to the present or bee power, the generation of the reflected wave is prevented or the h
speaker It is possible to reshape the transition of
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