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BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing an example of a display state
to be displayed by the display device according to the present invention, FIG. 2 is a circuit
diagram showing one embodiment of the display device according to the present invention, 2 is a
circuit diagram showing the detection circuit of FIG. 2, FIG. 4 is a waveform diagram showing
pulse signals used in the circuit of FIG. 2, and FIG. 5 is for explaining the operation of the circuit
of FIG. FIG. 6 is a waveform diagram and a display state diagram shown to explain the operation
of the circuit of FIG. 2, FIG. 7 is a diagram showing an example of a display condition of the
display device according to the present invention, FIG. FIG. 7 is a view showing an example of a
display state in another embodiment of the display device according to the present invention. 11
ииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии Phase shifter, 28 to 31 иии ииииии Rectifier, 32-35 и и и и и и и и и и и и
и и и и mixed circuit, 36-39.36 '-39' и и и и и и и diode circuit o circuit 44-47.44 '~ 47' и и и ... Variable
resistor. Fig. 1-1-50-86 501 (2) Figure 2: 1: Ding; Fig. 1-2 и и и 50-86 501 (3) Fig. 4 01 J E 1 1
o'clock-Goshi 103 J on 1 ? 1 0 43 1 ? ? ?? ? 1 11 11" bottom-02-[1 1 "] f] f 04-"] 1 5 TT
Figure 5 One by one '; ] Oh. Hachino Fig. 6-3-1 Fifty-86 501 (4) Fig. 7 (a) (b). ': R Rl H: ::: Figure 8
? i ?' LFRFNRR ?: l-4-
DETAILED DESCRIPTION OF THE INVENTION The present invention provides, for example, one
4-channel stereo O sound 1 to. The present invention relates to a display device for displaying a
field on a display tube in a simulated manner. Conventionally, a 5-h chair play device is provided
in the audio equipment 04 channel stereo device, and the sound field of the sound emitted from
each speaker of the stereo device O is simulated to be displayed on the digital tube, but this is a
conventional display device. In the x't * display method, a sound source is set at the center of the
cathode ray tube 11i11, and a signal proportional to the strength of the sound is emitted in the
direction of each virtual speaker from this sound source. However, assuming a rectangular O
room on the screen of a CRT, speakers are placed at the four corners of the room and the viewer
hears the sound t from each speaker at the center of the room, the above-mentioned
conventional sound field display It is not realistic in the scheme. Therefore, in the present
invention, the position of each speaker can be practically set to mi @ of the display tube, and the
position where O volume can be heard equally from each speaker can be displayed, a ideal 'a'
position of a listener 2.) To provide a display device that can be easily made * '-(di). One
embodiment 7 of the present invention will be described in detail with reference to the drawings.
That is, the display device according to the present invention is set up in the lj picture JJK row of
the display tube shown in FIG. 1 if four square chambers 12 are set, sound sources (speaker
positions) LF, RF, RR, LR at each of four corners. Set to '' to display the spread of the sound field
from each sound source toward the center of the screen, and the position at which the volume
from each sound source can be heard equally in the room, ie the optimal listening point Or
display a bright spot in the direction of higher volume. Next, a specific configuration will be
described with reference to FIG. For example, the output of each channel of the 4-channel stereo
device is multiplied by the multipliers 16, 17. ???? Added to 1 #. For example, the amplifier
1? corresponds to the audio signal LFJ corresponding to the front pressure @ 0 sound of the 4channel stereo, and the amplifier 11 corresponds to the sound on the front right side! The audio
signal RFJ, the amplifier JItK is an audio signal RRJ corresponding to the rear right sound, and
the amplifier 19 is an audio signal LRJ corresponding to the rear left sound. For the sake of
illustration, the outputs of the amplifiers 16, 17, 111 and 19 are respectively applied to the
emitter follower circuit 20 ░ 21.22.23. The 8-bit miter follower circuit has two outputs for one
input, and the emitter non-lower circuit 20 outputs the audio signal LFJi as it is to the one output
end 201 in a non-inverted form and inverts it to the other output end jO2 Output in the form
Further, the emitter-follower ? circuit 21 has each output terminal 1! The audio signal low is
output to the terminals 11 and 212 in a non-inverted form. or. The emitter follower circuit Jz
outputs the non-inverted and inverted forms of the audio signal RRJle to the output terminals
221 ░ 222, respectively. The emitter follower circuit 23 outputs the audio signal LRJt-noninverted to each output terminal 231 ░ 232, respectively. The output of each emitter follower
circuit 20 + 21 ░ 22.23 is applied to the phase shifters 24, 21 ░ 2?, 21 respectively. These
phase shifters set and output a phase difference of, for example, 90 ? ? ? between two audio
signals output from the valley emitter follower circuit. The outputs of the phase shifters 24, 15,
26.27 are respectively given by the rectifier circuits JJ, 29. These ports are added to JO and JJ.
The flow paths 211, 29. 30 and 31 each include a rectifying unit for rectifying an audio signal
output from the phase shifter in the previous stage, and either of the audio signals The
components of the polarity are taken out and added to the mixing circuits 32 ░ 1B and 34.35
provided in the next stage, respectively. The mixing circuit 32 mixes the two signals output from
the rectifying circuit 28 on the pulse signal respectively. ! ,, J j ? t so that the mixing part of the
kernel 32. To which the positive polarity signal Q1 is added, and the mixing section 32. An
electropolar pulse signal Q + is added to. And each mixing part S2 ?. The output of L322 is
connected to matrix circuit 40 and horizontal deflection connected to vertical deflection input 4
(hereinafter referred to as V axis) of display length 1iL (for example, off 0 scope) via respective
diodes 3 # and 36 '. Input, 41 (hereinafter referred to as H axis) i divided by + + 7 K s circuit 41.
Each sword can be obtained. Further, the mixing circuit 33 also has a mixing section 33 ? +
3321- which causes two pulse signals f 'output from the rectifier circuit 2g to be respectively 1j
and a pulse signal. Pulse signals Qy and Qt of positive and negative polarity vcI are added b and
?? и и и 6 mixing unit 33. , And 33 ? are applied to the matrix circuit 40 and the matrix circuit
41 through the diodes ysy and sy'l, respectively. In addition, a combining unit 34. weights the
two signals output from the mixing circuit 14 and the rectifying circuit 10 respectively to pulse
signals. , 34. 4) with heat treatment, and A pulse signal Q of negative polarity is applied to the
signal, and the mixing parts sa and tc are supplied with a pulse signal -1, "A" No. Q8 of the H.
Billion method.
And each mixing part 34. . 14 are applied to the matrix circuits 40 and 41 respectively via diodes
ss, sa ". Also v! The mixing circuit 11 also has mixed ? ss, ss, t- which causes the two signals
output from the rectification circuit 31 to be respectively folded into pulse signals. Pulse signals
Q4 and Q4 of negative polarity are applied to the respective mixing parts ss and ss ?. And 6
mixing unit 36. , 35. The outputs of the above are overwhelmed to the matrix circuits 40 and 41
via the respective diodes 19.39'f. To the matrix circuits 40 and 41, the outputs of the detection
circuit 42 for obtaining optimum listen information are added respectively. This detection circuit
42 is configured, for example, as shown in FIG. 3, and the output of the slider of the variable
resistor linked to the volume adjuster provided in each channel of the four-channel stereo device
is sent to the matrix circuit. Be added. Rule 2. , L-j, that is, the volume adjusters of the first
channel corresponding to the sound on the front left side of the four-channel stereo, the variable
resistors 44 and 44 'of the same name are interlocked. Also, as soon as the front right-handed
sound t is handled, the variable resistors 45 and 45 'of the WJ 2 are linked to the two-channel
volume adjuster. Also, the eighth low resistance resistors 46 and 46 'are interlocked with the
sound of the eighth channel corresponding to the rear right sound. Also, in response to the sound
on the rear pressure side, the variable resistors 41 and 41 'of 4 are interlocked with the soundregulator of the fourth channel fc. Thus, the terminal of each of the 44 variable resistors of each
variable resistor is grounded, and a pulse 16 is applied to the other terminal to make L. In this
case, the pulse signal port 1 of positive polarity and the pulse signal port 1 of negative polarity
are respectively added to the temporary sliding bodies 441 and 441 'of the first variable resistors
44 and 44'. Also, pulse signals Qs and Qs of positive polarity are applied to both the common
bond moving bodies 451 and 451 'of the second variable resistors 4J and 45'. In the slidable
members 461 and 461 'of the eighth variable resistors 4 # and 46', pulse signals of negative
polarity, pulse signals of positive polarity and pulse signals Q1 of positive polarity are then
provided. It can be seen in detail. Also, pulse signals Qs and Qs of negative polarity are applied to
both of the vibrators 411 and 411 'of the variable resistors 4r and 41' of wi4. Thus, the sliders
442, 452, Of the variable resistors 44, 46. 41 of the gt.about.
And is grounded via a resistor 4g.
Also, the sliders 441 'l481', 461 ', 4'll' of the 1st to the 4th variable resistors 4J ', 45', 4g ', 4F /'
are respectively connected through a resistor n after the common connection Being done! It is
connected to the tolix circuit 41 and grounded via the resistor 4g. The pulse signals applied to
the mixing circuits J2 to JJ and the variable resistors 44 to 41.44 'to 4F' described above are
obtained from, for example, a six-phase rotor pulse generator using a divider circuit or the like,
as shown in FIG. The clock pulses shown are sequentially applied to the mixing circuit and the
detection circuit. In this case, the mixed circuit 31 of the mixed field 31 K, J! ?? VC is added
with the pulse signal Q114, and the mixer 33. , 33t are applied with pulse signals Qy and Qp,
respectively. In addition, mixing W 634 ? of the mixing circuit 34, 34. The pulse signal 8 and Q
are respectively added to the mixing unit 35 of the mixing circuit 35. The pulse signals Q4 and Q
+ are added to 35, respectively. Therefore, as shown in FIG. 6 in each mixing section 2, as shown
in FIG. 6, the negative component 52 of the audio signal is superimposed on the positive pulse
signal 51, and I-j is applied to the negative pulse signal 53. The positive electrode component 54
of the audio signal is superimposed. Therefore, considering the output waveforms of Toki's
matrix circuits 40 and 41 to which audio signals are not superimposed, waveforms 55 and 5C
shifted in phase by 90 "as shown in FIG. 6 become sound sources at four corners of one display
device. LF, RF, RR, LRt can be added. If an audio signal is superimposed on each pulse signal in
the above-mentioned process, it is possible to draw an L sound field toward the center of the
screen according to the level of each channel 0111f "channel O audio signal. it can. Next is the
display of the optimal response point. ???? 5-phase I pulse signal Q shown at 141 m. And
Qstll1 display simultaneously to each variable resistor described in FIG. That is, since each
variable resistor is linked to each corresponding all-ll-channel regulator, the level of the output
pulse can be varied according to the adjustment state. Now, with 8 variable resistors in the same
adjustment state. The volume of each channel is at the same level, and the output pulse of each
variable resistor is also at the same level. Therefore, the signal applied to each matrix circuit
40.41 should be a direct current level signal and a direct current signal of the same level applied
to the main axis and one axis of the display device as apparent from FIG. N8. become.
Therefore, it is possible to make a bright spot in the center of the screen of the display device.
Therefore, if adjustment is made to increase the sound iI of the second channel 1-1 channel
corresponding to, for example, the front right side, the bright spot moves near the sound source
RF as shown in FIG. (Volume correspondence m) Also, changing each pulse signal applied to each
variable resistor to the opposite polarity described in FIG. 8 KL, for example, when the volume of
the channel of ? 2 is increased, the bright spot is changed to FIG. Move close to the sound
source LR in the process shown. This is an indication of the point at which the volume from each
sound source can be heard electrically evenly and can be said to be the optimal listening point.
As described above, according to the present invention, for example, each sound source of the 4channel stereo device is set at the four corners of the screen of the display device, and the
direction or channel of the channel with large volume from each channel It can also display the
optimal listening point ? where the sound is even. Similarly, the present invention is not limited
to the above embodiment, and in the above embodiment, the optimum listening points are
indicated by points. However, as shown in FIG. 8, the rising of the waveforms of the fifth phase
pulse signals Q and Qi Falling from 1) to superimposing 90 sine waves of 90 @ out of phase on
1) 2) It is also possible to perform a circular table ant from 14 to i-and K. Alternatively, a linear
display C can be made by superimposing in-phase sine me on the pulse signals q and Qs. In this
case, DC components unnecessary for the pulse signals Q6 and 4IO are removed by the liquid
shape shaping circuit etc. and, of course, they are added to the 1) plus circuit. As described
above, according to the present invention, it is possible to realistically display the situation of the
sound field that spreads to the viewer from each direction, and also to display the direction of
one listener's optimum listening I or the channel that becomes louder Can provide a display
device that can
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