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BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view showing the main part
of a conventional four-channel stereo headphone, FIG. 2 is a circuit diagram thereof, and FIG. 3
shows an embodiment of a four-channel stereo headphone of the present invention. FIG. 4 is an
electrical circuit diagram of the headphone. 4 и и и и и и и и headphone case, 5 и и и и и и и dedicated
speakers for bass, 6.7 и и и и и и и dedicated speakers for high-pitched sound. 1 '2' LE 'F' TRIG} 1 =
47-real open 48-88021 (2) 3 645. . . . . . . ??????? ???????? / W 6 N 1 ? ? ,, 1
ni p! "? ??? ??
[Detailed Description of the Invention] The present invention has recently been implemented and
is for use with a 4-channel stereo H for a 4-channel stereo headphone. Recently, 4-channel stereo
has been developed and put into practical use as stereo. Using tn te and headphones in such a
four-channel stereo is considered to be the most attractive to those who are interested in sound.
?? ?- ? lI21-o22, various researches have been made as headphones for this 4-channel, 3j!
There are some that are put to practical use at present. ? ? ? ? ? ? ? ? ? ? ? ? ? ?
? ? ? [Fig. That is, as shown in the first WJ, the left and right headphones are configured by
incorporating the rear channel speaker (2) and the front channel speaker (3) in one headphone
case (1). c, 0-Heddhon circuit ?Well shown in Fig. 2. But it is useful to monitor all the signals of
the Fi 4 O channel in this configuration without any leak, but и Complete 4-channel sound field
feeling It is expected that tP% will not occur in spring. The present invention is to eliminate the
above-mentioned conventional drawbacks f. Hereinafter, the present invention will be described
with reference to the drawings of an embodiment. In other words, although the 3 dimension
remote system is often used as one system of the conventional 2 channel stereo reproduction,
the present invention Fi 1 5t of this system is improved to provide 4 breakout ? feather ? wave
3 channel headphones I'll take care of you. In Fig. 9.5, to (4) Fi, it is a Doho / case, and a large
aperture low sound speaker (5) excellent as a low sound speaker in this headphone case (4). Is
placed in the center, and with this silk-only speaker (6) at the center, with the head attached, the
front side (1A ?) and the inside of the eyebrow are each r directly connected For example, a
high-pitched speaker with a small diameter and a point sound source made of a dome-shaped
diaphragm, which is excellent for high-pitched sound reproduction only, is disposed (only 721
(72 pairs). Moreover, the low sound speaker (5) @ diameter 2w, for high sound q, mabica (bj, (7)
diameter tD, +2 high sound speakers (season, (7) center round R11- For example, 11> = ? <i
?????????? (11 + ? ? 11 1 ? 3 ииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии The end of
the 4-tome book is in this range because good results are also obtained rL. An example of the
circuit is shown in FIG.
That is, for example, LI? From the (left front) signal and the high sound speaker (A) on the rear
surface, the noble IIt of each signal of LR (left trivia) is reproduced. Next, ?, the bass of their
signal! II is a filtered condenser y connected in parallel to the low acoustic speaker (5)? (8) -y! :
LRLv both bass signal stranger 1 synthesized, low acoustics,-force (5) 73 и et al. Reproduced as
synthesized sound More than that described on the left (LEFT). The same applies to the right
negative (RIOT (T) $ 1. In the figure, xVi ground, (9) indicates the earpiece. The four channel
stereo stereo headphones of the nine inventions configured as described above are recessed so
that the bass can reproduce the front and rear signals as a synthesized sound with one speaker,
and the low sound speaker is only 1 m, i [Large diameter speakers can be used, and can be used
for bass reproduction. Pg-gg021-055, one distance between two high-sounding speakers, l large,
so the front and rear separane yon have very good power and excellent feeling of sound field It
can be In addition, high-sound speakers can be small-bore, close to i * t * o radiation before the
point, improving the sense of stability of the front and rear sound source positions, further
improving separation, noise, and force We are rich in regeneration t-delicious. In addition, to play
in the bass, ?? f'x exclusive k> Hy Bika, the setup of the dedicated speaker of 7 7 7 7 A speaker
can be used, and natural and more faithful reproduction to the original sound can be performed.
It has such advantages of Km, and is a major industrial II.
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