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This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
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BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a frequency characteristic curve diagram for
explaining the principle of the present invention, FIG. 2 is an explanatory diagram of 4-channel
nenole stereo reproduction for explaining FIG. 1, and FIG. FIG. 4 is an explanatory view of the
frequency characteristic of the de-emphasis circuit of FIG. 3, FIG. 5 and FIG. 6 are concrete
examples for obtaining the characteristic of FIG. FIG. 1, 2 and 4.5 are speakers, 3 is a LPF, 6.7 is
an attenuator, 11 is a sound source device, 12.17 is a high frequency tee emphasis circuit, 13 is
an encoder, 14 is a recording device, 15 is a decoder, 16 is a decoder It is a playback device. ?
(? ? 5 W F 7 ? L 2, 2 ? 3 / ? o, VC (M 7 HZ) amount ?, ? C \ l O O qtt-t A 'b "" C \ \ \ \ \ \ \
\ \ \ \ \ 12 / charcoal a / Fig. 12K / .7K2., IK3.4 K4.8 KOttt? F-y1.8 K "" "lPF (67) t / ,, 1-1 real
opening 51-90801 (2) o 2 Mouth "A-3-2-1-51-90801 (3) Sat 4 ? ? j ? ('l)-1 [one-two-two d ?
(l)" / d%, 4, Otome pieces f '= 2TI-(pttzz) c (rtt) view-3-1
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a stereo device in
which a sound box is also formed behind. There is a 4-channel stereo which is most popular as a
device for reproducing stereo sound by providing a speaker in front and back. This four stereo
speakers are softly reproduced at the four corners, and by making a pottery at the center 111, it
is intended to obtain the reproduction that is actually heard by going to the performance gold. .
?? 111 ??? However, in this reproduction, a sound image is formed in the front by four spy
* O star stokes, and the above effect is weak. 41K 111-There is a male point that you can not be a
student of the Ritsuno body sound group that can, for example, become a member of an
orchestra and hear the sound of an electric appliance from behind. Pre-planned points above
point Kl! Reproducing a signal from a midrange tee emphasis circuit with regard to a reappeared
blue signal from a rear speaker, which is regarded as the present invention, and provides a stereo
device capable of forming a sound image also to the rear while maintaining a timbre from K. If
the cutoff frequency of the midrange de-emphasis circuit is within IKHz to 5 KHz, the effect of
the prior scheme can be obtained. This invention may be applied to the signal to be reproduced
by the speaker behind the encoder f7-Go to obtain a signal for recording, or the rear speaker to
be reproduced by the speaker from a record board etc. If the signal to be reproduced may be
applied to both the signal before the encoder and the signal before being reproduced by the
speaker 4), the signal may be reproduced by the rear speaker at the time of reproduction. Any
bias pressure may be applied if it is applied. In this case, it is most effective to apply the present
invention with an encoder, since the effect of the present invention can be obtained by providing
a special de-emphasis path in each strip and applying the hand-planting of the present invention
most. Next, the advance r will be specifically described. For example, a violin's ft microphone;
converted to an electric signal by Nenen, and reproduced this electric signal through, for
example, a 4-channel stereo through a low-pass filtering circuit (hereinafter abbreviated as LPF).
"C1"! I found that. If this experiment is illustrated, it will become like ? 2. That is, the left and
right two rear speakers (I4) (R11) (1) 1 '! ? 4 to supply 11K ? и и supply via pii 'IIJI, the front left
and right two speakers (Ly) (By) decay to 4 + 51! Supply via the 161171 and change the cutoff
frequency of the LPF + 31. When changing the violin paste, for example, the violin of the violin
paste 784 & and 988-is used as the basic solution. Perform the round and round, and show that
the characteristics as shown in the curve -A in Fig. 1 are shown.
That is, it has been found that there is no change in the stuttering image at the number of cut-off
peripheries of 5 k and 11 or more, but the change in the sound image appears at one cut-off
frequency of 5 kHg or less. Furthermore, it has been found that the characteristics such as sisterline-B, C are exhibited for, for example, 1 chem. That is to say, play a deager sound with Te J-1's
i9; j Hz as the basic solution, convert it into an electric signal with a microphone, and reproduce
it on 111i 11 as shown in FIG. It turns out that there is a change in the sound image by
frequency 9. Furthermore, the chain O sound based on 247 kH1 is played, and converted to an
electric signal by the microphone 1, and the same as K @ ") !! As shown in Fig. 11C, it is found
that the sound image changes at a frequency of less than 9.3.4 kJ 4 s as shown in Fig. 11C. In
tsllIl, "soda" indicates that the sound image is islanded forward of the center, and "after" indicates
that the sound image is +4 that is behind the center and behind. So, for example, the sound of
guaione with a microphone for 4 large electric value numbers 1 & J11 ? bulk wave number f. Is
supplied by LPPIal gold at 3.4 kHz, it is possible that the sound II'4r is centered around the
sound 4); By applying this wI-cum to a stereo device as it is, the tone color turns into a male in
9th, and it is not a scale, and there is no sound on the back side and there is a 1 or 1 warm point.
As a matter of fact, there is a% imitation on the point of applying this de-emphasis bottleneck of
high frequency and high frequency. Next, with reference to FIG. 3, an embodiment applied to the
4-dane stereo will be described. For example, a 4-hand channel signal is obtained at the sound
source 11 by means of a microphone by a known hand &. This ? No. J J One spica ? ? ? ? ii
electrical signal 8 L, and the electrical signal to be reproduced by the right front speaker is 8 and
the electrical gi to be reproduced by the rear left speaker No. 8L, and an electric signal to be
reproduced by the rear right speaker 8R1. ?? Supply '5' \, ? 0 fine number mid-range de eng
fan @ III ? j K of this brilliant. This circuit 11a is a circuit having a circuit #jL & characteristics
as shown in FIG. That is, nine circuits with frequency characteristics that attenuate with a slope
of 64 B 10 ct in the midrange, and nine circuits with five frequency characteristics not
corresponding to the range of each signal reproduced by the rear speakers as shown in FIG. No,
it may be connected to one f-emphasis eye @ 1 having a primary primary frequency (fc) less than
0 s KH = 0 0 For example 5 LB IC, and the sound of the violin is converted to an electric signal as
shown in FIG. Of the first-order cutoff frequency (fc) is 3.4 KHz, for example, and ?L in FIG. 4
constitutes a de-emphasis circuit of 3 to 20 dB.
Further, for example, if it is the sound of Cho from S next to n, the first cut-off frequency (fC) is 3
K) h from FIG. 1 curve-C and MV in FIG. 4) L constitutes a 6-wuats v Geenno J7 circuit do it. The
same may be applied to the SL, 8 RB signals. In this way, at the time of reproduction, when the
signal compensated for the signal to be reprocessed by the speaker at the rear (61) is supplied to
the processing / coder ?IK and cut into, for example, a record, it is converted into the signal of
this encoder 2 channel by known means The recorded signal is recorded on the recording board
as a cutting signal by the recording device I. After that, pick up the record board again, convert it
into an electrical signal, and use the decoder +15 for 2 channels! The air signal may be converted
into an electrical signal of 4 channels, and the signal may be reproduced by reproducing iron
wax i + 6 if 1, and supplied again to the de-emphasis circuit C1n in the same manner as the deemphasis circuit 11 ?. The same compensation as described above may be applied and then
regenerated. This de-emphasis circuit may be connected to the signal before brass sound, or may
be applied only to the reproduced signal. By performing such 'compensation, there is an effect of
reproducing 4-channel stereo and forming t; in the rear at nine o'clock so that stereo C presence
can be improved. The above-described example of the de-emphasis circuit is as follows. For
example, a circuit as shown in FIG. At this time, the primary value cutoff frequency f3 is obtained
by 1 hour 1fc-1 = .about .??? ?? 2g (IhrIh) c attenuation amount ?L by R1 + R2?L =
20loglg ????? (dB) 2. In this case, it was found that high fidelity reproduction can be
achieved by setting the attenuation characteristic to an attenuation characteristic of a slope of 6
dB10 ct in a frequency range of 1 to 5 KHz based on FIG. The crane is also wA ? ore physical
circuit diagram. That is, the signal received at the input terminal QM 2 is branched into two, one
of which is supplied to the warmer (d) through the attenuator (d) and the other is connected to
the mixer (d ) Configure to supply K... The filter m- is connected to the capacitor c19crn and the
circuit is I. That is, the usual filter K @ jl L which blocks the fit-in cord m at a certain fc, high
frequency components of 'C or more obtain an attenuator port at an output through m 1- . As
described in detail above, according to the prior proposal, the apparatus K for stereo
reproduction provided with +81 speaker at the rear and the reproduction by the rear speaker has
the primary 311 cutoff m * number in the high frequency band within 5 KHz to I KHz By
supplying the signal to the frequency de-emphasis circuit and supplying it to K, it is possible to
obtain nine stereo devices by obtaining t ? ? at the rear.
4, figure [111v cylinder rate explanation ? 1 Figure 11 is the frequency characteristic 11 of
rounding to explain the management of the present invention, Figure 2 is a four-channel stereo
reproduction schematic diagram of explaining the i garden, 3 FIG. 4 is an explanatory view of a
frequency characteristic of the 7177777 circuit of FIG. 3, and FIG. 5 is a specific example of
rounding for obtaining the characteristic of FIG. It is a circuit diagram showing an example. +
11121i41151 company speaker, 131 is LP? , + 61 171 is an attenuator, qB 25 source device "" 2
Q? fa8 frequency dee; и fascis circuit, 03 is an encoder, 141 a butterfly brass pocket, + 151 is a
decoder, 11 @ is a reproduction device. Atsushi Atsushi Tomioka (other one) IV + 1 L ,. 1z: 4 ?
? g ? ? ? 0 ? 0 ? r r 0 ? ? ? ? ? 7 410 ? 7 ? ? 16 16 ? 16 ? ? ? ? ? ? ? ? /
/ / ? 7/72, = /?, y, / 'E /', p 't t 1 1 /> ("" "" "" ""); 3 (? -6? u- / c E-type 1.111 * cinnamonj90801 name :: 2nd F Ц 1 /, 5 Mi ? ?! ?/ ? My 7043> Force 5t17) Body thickness i ? ? ии
4e11 5 seconds 2i light 3 ports E ground C ? n resistance [1-1 /, 7 / / 2 2 fatigue 14 8-2/2 Dien
7 o 'S *-4 eyes ? \ 2 4 CW 4 * L),-p, V 90801, negative S figure (-/ ? ? d? Rt ? ? 2 ░-m-) go,
good / d viscosity, Small ?71 jh ? ? so-called I-Ht times 2 sb RR g 42 /, 2 C lower ~ issue <TC +
22. <3908 revision ? 9 01 01 \ \, list of attached documents (1) One letter of attorney (2) one
statement (3) one drawing (4) application duplicate copy (2) ghost Spring check 1 book 1 book-i,
other than the above, inventor, applicant for utility model registration or agent-(1)-! i'i-? ? и ?
1ri shown? Sesame style "" (administration-'4'! l Rt M ?) Tokyo Shibaura Electric Co., Ltd.
comprehensive research d 1 Hachihiro Hajime) ? J (2) Agent 1-1-6 ** Uchiyukicho Chiyoda-ku,
Tokyo, Ei! To t%: tl [yJ]-Sae (7568) Patent attorney sex Kikuo gp uyo
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