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JPS4880501

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DESCRIPTION JPS4880501
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram of an example of a fourchannel stereo device, FIG. 2 and FIG. 3 are vector diagrams of the explanation thereof and FIG. 4
is a system diagram of an example of the device of the present invention. 5 to 10 are vector
diagrams of the explanation. 2 to 5 are skiers, 6 to 9 are phase shifters, 10 and 12 are adders, 11
is a phase inverting circuit, 13 is a display space, 14 to 17 are display amplifiers, 18, 22 and 24
are adders, 20 is a subtractor, 19, 21, 23 and 25 are rectifier circuits. -1- Jikkyo 48-80501 (2)
Fig. 1 j's 7-2 and @ -pe} Fig. 3 '= i' twenty-five 1] -4 town P re ■ (pan / member 3 J b J j 1 2 Japanese Utility Model 4880501 (3) Fig. 4-3 Utility Model 48-80501 (4) Fig. 5 Fig. 6? j (斤 m '·
Fig. 8 Fig. 7 Fig. 10 Fig. 10 kR check 1 door 1 6 4 1 real open show 48-80501 (5) correction
correct 47.3.3 utility model 答Correct the claims as follows.
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a display of a four
channel stereo device. Indication 11K j shows IIK (11 speakers (2) to (5) are arranged on the left
front, left rear, right rear and right front of the second rank speaker (2) to (5) K each position f #
It is estimated that there is a way to provide 4-channel stereo reproduction by supplying a stereo
signal corresponding to. In this case, the original 4-channel stereo signal is once converted to a
2-channel stereo signal Kl and transmitted, and the reproduction side demodulates it into a 4channel signal and feeds the loudspeakers 12) to 151K4 #. Fig. 1d shows an example of the
demodulation circuit for the second cycle, which is a two-channel stereo signal, that is, a phase
shifter (6) having a larger amount of movement in one of two synthesized signals and a phase
shift amount The phase shifter (8) whose phase shift amount is 9-, and the nominal phase
amount is supplied to the phase shift @ 171 to be-. The phase shifter (9) K is supplied. 4B80501-03 (2) Here, the signal Lb is 3 dB lower than that of the synthesized signal Lt Fi shown in
FIG. And the signal Rb is synthesized in the form of the signal L1 in seven phases in parallel, and
the signal Rb is mainly composed of the signal Ri as shown in the synthesized signal itFi as
shown in FIG. Also, the signal Lb is synthesized by a soft rod whose phase is advanced by 1 with
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respect to the signal Rf and the signal Lb is synthesized by the soft viscosity of the reverse phase
to the signal Rf. is there. Then, the output of the transfer device (6) is supplied as a demodulated
signal Lf 'of the fan 1 to the speaker (2) K. Also add O the output of the phase shifter (7) 12)
to the adder Oe, and add 0 and the output of the tomb of the phase shifter (9) ′ to ff times and
add the added output to the phase inverting circuit It supplies to 轡 a and obtains 22 22-signal
Lb't- from this, and supplies it to the speaker (3). Also add the output of the 7 ′ ′ ′ ′ ′ 4 ′
′ ′ phase shifter (8) multiplied by 7 times the phase shifter (6) 0 output by s' to the adder 44
and add the output of the phase shifter (8) A demodulation signal R4) 'of Tetsugo 3 is obtained
and supplied to the loudspeaker (4). In addition, the output of the phase shifter (9) is given by
the 40 * 1 I @ 1 144. The speaker (5) K is supplied as -20, 0101-D 81 81 ". In this case, fr $ IIIK
multiplied by m- indicates phase deviation of-. Therefore, as shown in FIG. 3, as shown in FIG. 3,
the signal Lb is mainly composed of the demodulated signal Lf '#' i signal Li of the symbol l at a
level 3 dB lower than that of the signal Lb. The signal% is synthesized in the state of the # signal
Lf and the (ro) phase, and becomes the main signal, and the second signal L Lbl is the main
component, and each of them The signal Lf is combined with the signal LbK at a level 3 dB lower
than that of the signal LbK and the signal −Rf is combined into a signal Lb and combined in an
antiphase manner, 1 '3 recovery-signal light.
Is mainly composed of the signal Rb, and the signal Rf is synthesized in a voice like manner with
respect to the year FLb at a level of π-3 dB lower than this and the signal Lf is signal 9 Jr4's u4
signal R '(' is signal FLf as the main component, and each has a signal level of 3 dB lower than
this) 's line phase proceeds to 4M4 + RfK. The E No. Lb is 4 in the reverse of the 4.48-80501-05
phase with respect to the signal Rum. Therefore, it is necessary to supply the demodulation
symbols Id ', Lb', "b ', Rf" to the speakers (2)-(5) as described above, or by performing 4 channel
regeneration as described above. The present invention relates to spoofing such a 4-channel state
t / # MtK, and it is an INK hole that is displayed by displaying the state of mO in front, rear, left,
and right of the playback sound field in 411 faithfully and effectively. . Hereinafter, an example
of the device of the present invention will be described with reference to FIG. Fig. 4a shows an
example of the device according to the present invention, in a display space having loudness
similar to the loudness of the left and right before and behind the room performing Q3Fi stereo
reproduction, the front, the rear of the room performing stereo f8 living. The display lamps I, 09,
Q9 and 顛 are placed at positions corresponding to the left and right, respectively. Then, in the
adder 0, the two composite signals Lt and Rlt-add, the added output Lt + R * is rectified by the
rectifying circuit (19, and the pulse output from this is used as a display signal of the lamp 1 as a
lamp 04 Co-supplement. Also, subtractor F subtracts two composite FfL L Lt and Kl, and the
subtraction output Lt-FLt is rectified by the Sagawa circuit (5) 48-80501-06 (至), and the
pulsating flow output from this Is supplied to the lamp t19 as a display signal of 2 years of age.
Also, in the adder 1, the demodulated signals Lf 'and Lb1 of jP2 and jP2 are added, and the
summed output Lf' + Lb '/ rectifying circuit Q3 & C is rectified and the pulsating current output
from this is displayed as a display signal of v3. Supply as lamp fieK. Furthermore, in the adder,
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the gradation signals Rbl and R4 'of 3 and 4 are added, and the addition output Rb' + Rf'tadjustment a circuit C! ! 9に? Adjustment 1) IEL, pulsating current output from this is supplied
as a fourth display signal to the pump 4 # and then IIIK, and the sum signal Ll + FLt from the
adder aFj separates each compensation signal Becomes as shown in FIG. 5, and the signals Lf and
Rf are in phase with each other, and the signals Lb and Rb #-are in opposite phase with each
other.
Therefore, the magnitude p of the display signal of the pole 1 obtained by rectifying the sum
signal is substantially in accordance with the sum of the signals Lf and FLf corresponding to the
front position, and the display signal of Since the lamp I is turned on, the brightness of the lamp I
is differentiated according to the forward direction of the sound field. The phase relationship of
the 6.48-80501-07 signal components is as shown in Fig. 6 in the reciprocated code Lt-Rt from
the subtractor 2 and the reverse of the sum signal from the a second adder described above. The
signals Lb and R4) are in phase with each other and the signals L (and RfH are in antiphase with
each other). Therefore, the magnitude F of the second display signal obtained by rectifying this
difference signal. It corresponds to the rear direction snow and corresponds substantially to the
sum of the good signals Lb and FLb, and the lamp for this second display signal is turned on.
Depends on the condition. In addition, in the sum signal Lt 'hand Lb' from the adder 3, the phase
relationship of each signal component becomes as shown in FIG. 7 and the signals Rf and% i- are
in opposite phase to each other. Therefore, the sum signal is rectified to obtain 7+? Since the
lamp Oe is turned on by the third display signal, the lamp Oe is turned on according to the sum
of the signals Lf and Lb corresponding to the left side of the magnitude of the display signal of
E3. The luminance of the image is unified according to the left direction of the sound field. Also
the adder c! 4), the phase relationship of each signal component becomes as shown in FIG. 8, and
the exception of Li and +7148 is reversed for the sum id from the above-mentioned adder ■. 80501-08 and Lbti are mutually exclusive phases. Therefore, the sum signal is rectified, and the
value of -f: the 3F4 display signal is approximately corresponded to the sum of the signals Rf and
Rb corresponding to the right azimuth bond. Since the lamp aD is turned on, it changes according
to the rightward condition of the luminance u sound field of the lamp a 方向. Therefore, in the
display space Q3, a lighting condition indicating the state of each direction of the stereo
reproduction sound field is obtained. Since the phase relationship of each signal component in
the sum signal Lr '+ Rt "of the 1's and l's 4's-readback signal is the same as that of the abovementioned sum signal Ls + RtK, this is a display signal for O1. The sum signal Lf '+ uf "may be
rectified and used, or the phase relationship of each signal component in the difference signal
Lb'-Rb' of the second and third demodulation signals is also shown in FIG. Since this signal is the
same as that of the sum signal Lt + Rt, a signal obtained by rectifying this difference signal Lb'84) 'may be used as the 1st display signal.
-The phase relationship of each signal component in the difference signal Lf'-Rf 'of the wrestler 1
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and the fourth demodulation signal becomes the same as that in the above-mentioned difference
signal Lt-R1 (in 8148-80501-09, the display of flag 2 It is also possible to use a signal obtained
by rectifying this difference signal Lt ′ ′-Rf ′ as a signal to be used. In addition, the phase
relationship of each signal component in the sum signal Lb + Rb + of the demodulated signals
of FIG. 2 and 3 is also the same as that of multiplying the two differences q−Lz−RtK shown in
FIG. This sum signal Lb '+ R4)' full rectification may be used as a signal. As shown in the figure K,
for example, corresponding to the front and back direction, π lamp I and (1! A transparent plate
made of fake 1 edging acrylic is engraved on the front of 19 and the original from lamp 0 () and
T29 is placed on this transparent plate 1 and 2 for this transparent plate, and from the front and
rear direction of the figure. In order to make the source spread like left and right in the same
way, and to correspond to the left and right direction, use a long pile length in the front and back
direction as shown in the figure, for example. Be brave by devising something. Moreover, as a
display manual, not only a lamp but also a CRT can be used, for example. In this case, the-is
provided with upper and lower and left and right deflection plates in the tube, and the abovementioned display signals are supplied to the corresponding deflection plates to read the
document # -4'L'5 (9148-80501-10). Change the beam spot distribution. According to the abovementioned present invention device flltK, the condition in the front, rear, left and right direction
of the reproduction sound field can be effectively displayed by a visual method, and furthermore,
the display faithful to the reproduction sound field can be obtained. In the case where a lamp
corresponding to each direction is provided on the side of the frame and a display signal
corresponding to each direction is supplied to this for display, the signal 1 in the front and back
direction is the same even if the magnitude of the signal in the left and right direction is equal
There is a special note that it is possible to back by performing the display according to the size,
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