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JPS5461501

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DESCRIPTION JPS5461501
DESCRIPTION OF THE PREFERRED EMBODIMENTS Title of the Invention The invention provides
an acoustic display device 1 and a pictorial display board on which a speaker or the like is drawn
according to the arrangement, and two operators interlocking with a front / rear adjustment
volume and a left / right adjustment volume of the acoustic device. An acoustic display device,
comprising: an operation intersection of the two actuators arranged so as to appear on the
pictorial display board so that a sound balance point position can be visually confirmed. 2. While
having a picture display board which drew a speaker etc. according to the arrangement, it has
two actuators interlocked with the volume for front and back adjustment and the volume for left
and right adjustment of the acoustic device, and these two actuators are pointer type An acoustic
display device characterized in that the point of intersection of these pointers is used to display 1
as a sound balance point on the picture display board.
2, the scope of claims
3. Detailed Description of the Invention The present invention relates to an acoustic display
device, and more particularly to a device for facilitating volume control and operation of front,
rear, left and right of a stereo device using four speakers. In a stereo system using a conventional
four-speaker system, such as a 4-channel stereo system or a 2-channel stereo system in which
speakers are arranged on the front and rear of a vehicle cabin, the volume is adjusted to
determine where in the room the sound image is localized. That is, there are provided a volume
for adjusting the left-right volume balance and a volume for adjusting the front-rear volume
balance. Unlike the volume adjustment volume, it is difficult to determine which position is best
to adjust to this position, so a slide-type volume is adopted that makes it easy to determine the
outline according to the position of the knob at the very least. ing. However, in reality the visual
position of the knob does not match the auditory balance, and in the on-vehicle acoustic device,
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since it is necessary to make an instantaneous judgment, it is possible to grasp the sound image
position more quickly compared to the household acoustic device. There is a demand for a
display device that can be adjusted and that anyone can easily obtain an arbitrary sound image
localization position. The present invention aims at an acoustic display device in which the
reproduced sound field is displayed pictorially and the position of the balance point of the sound
can be visually confirmed there, in view of the above-mentioned circumstances and EndPage: 1. It
is said that. According to the present invention, while providing the picture display board which
drew the speaker etc. according to the arrangement, it is provided with two actuators interlocked
with the volume for front and back adjustment and the volume for left and right adjustment of
the acoustic device. It is possible to provide an acoustic display device characterized in that the
operating intersections of the actuators are arranged so as to appear on the pictorial display
board so that the sound balance point position can be visually confirmed. Further, according to
the present invention, there is provided an acoustic display device characterized in that one
operator is a pointer type, and an intersection point of these pointers is displayed on the pictorial
display board as a sound balance point. Hereinafter, preferred embodiments of the present
invention illustrated in the attached drawings will be described in detail. FIG. 1 shows a stereo
device in which the device of the present invention can be suitably implemented, and shows a
block diagram of an on-vehicle 4-speaker 2-channel tape stereo device as an example thereof.
According to the stereo device shown in FIG. 1, there is a 2-channel magnetic head 1, and this
output is used to bias the pre-amplifier 2 to adjust the left-right balance adjustment volume
(hereinafter simply referred to as the balance volume).
3) It is connected to volume 4 for volume control. The movable terminal of the balance volume 3
is dropped to the ground, the movable terminal of the volume adjustment volume 4 is connected
to the power of the power amplifier 5, and the output thereof is referred to as a front / back
balance adjustment volume (hereinafter simply referred to as a fader volume). ) 6 is connected to
the movable terminal. The fixed terminals of the fader volume 6 are connected to four speakers
respectively. In FIG. 1, the left channel front speaker is indicated by symbol LP, the same channel
rear speaker 會 symbol LR, and the right channel front speaker is symbol RF. The rear speakers
of the same channel are shown in front of the symbol. FIG. 2 shows an example of the acoustic
display device according to the present invention. Reference numeral 10 is a knob of the balance
volume 3, 11 is interlocked with the volume 3, (3) pointer for balance, 12 is a fader volume 6 A
knob 13 is a pointer for a fader linked to the volume 6, and a symbol 14 is a pictorial display
board showing the arrangement of a speaker, a listener (driver) and a seat. Each of the balance
volume 3 and the fader volume 6 is a slide type volume, and they are disposed at right angles to
each other with respect to the slide direction. That is, the balance volume 3 is arranged to slide
left and right with respect to the picture display plate 14 depicting the plan view of the vehicle
interior, and the fader volume 6 is arranged to slide forward and backward with respect to the
picture display plate 14 is there. . In FIG. 2, by moving the knob 10 to the left and right and the
knob 12 to the back and forth, the crossing point of the pointer 11 and the processing 13 is
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shown on the picture display board 14 and the crossing point is from four speakers. It indicates
that the synthesized sound is the place where localization is the most advanced. FIG. 3 shows an
example of the structure of a pointer linked to a volume. According to FIG. 3, the pointer 11 or
13 is fixed to, for example, a screw (4) on the lever 15 of the volume, and operates integrally
with the lever 15 according to the operation of the volume. 4 and 5 show another embodiment
according to the present invention. While the embodiment of FIGS. 2 and 3 mechanically
interlocks the two hands 11.13 with each volume, this second embodiment is electrically
interlocked with each other. That is, another volume 16 interlocked with the balance volume 3 is
prepared, one fixed terminal of this volume 16 is connected to the power supply, the other fixed
terminal is connected to the earth, and the movable terminal is a voltmeter (balance display
meter 17) and the pointer 20 of this voltmeter 17 is used to indicate the left and right balance
positions.
Similarly, another volume 18 interlocked with the fader volume 6 is prepared, the two fixed
terminals are connected to the power supply and the ground, and the movable terminal is
connected to the voltmeter (meter for fader display) 19, and this voltage A total of 19 pointers
21 are used to indicate the front and back balance position. This is the same as the embodiment
of FIG. 2 where the intersection point of each phase needle is a position full indication EndPage:
2 at which the sound image is localized. According to the present invention, while the localization
position of the sound image has been determined based only on the position of each operation
knob in the prior art, since it is a pictorial display, reproduction using a large number of speakers
such as a four speaker system The balance point f of the sound in the sound field can be
recognized instantly. In addition, since the movement of the front, rear, left and right sounds can
be easily known in the figure, the alignment operation is easy. Further, in the embodiment as
shown in FIG. 2, since the movement of the pointer and the movement of the knob are the same,
it is easy to operate. Furthermore, in the embodiment as shown in FIG. 4, a display unit such as a
picture display board and various volumes can be provided separately, and even a high
impedance circuit can be adopted without considering noise mixing and the like. Although the
present invention has been described in detail with respect to its preferred embodiments, the
present invention is not limited to this specific embodiment but many variations and
modifications are possible without departing from the spirit of the present invention. For
example, although the slide type volume is adopted in the embodiments of FIGS. 2 and 3, it is
possible to make it a rotary type, fix the pointer to the rotary shaft, and display as shown in FIG.
it can. In FIG. 4, a sliding or rotating volume can be easily employed. Furthermore, the picture
display board is not limited to a car, and when used for household use, it is preferable to draw
and display a tatami mat, for example.
4. Brief description of the drawings FIG. 1 shows an example suitable for adopting the device of
the present invention, and FIGS. 2 and 3 show a first embodiment of the present invention, FIG. 4
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and 5 show a second embodiment. 1 · · Magnetic head, 211 · preamp, 3 · · · left and right balance
adjustment volume, 4 · · volume adjustment volume, 5 · · power amplifier, 6 · · front and back
balance adjustment volume, 10 · 12 · e corner, 11.13, 20, 21 · · · pointer, 14 · e picture display
board, 15 · · lever, 16, 18 · · volume, 17 ° 19 · · voltmeter. 匡) and 1-EndPage: 3 晃 3 晃 4 End
EndPage: 4
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