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JP3138363

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DESCRIPTION JP3138363
An object of the present invention is to provide a general-purpose acoustic electronic device
including a sound source, an amplifier and a speaker device, which can be widely compatible
with meeting various width and acoustic characteristics in which it is installed. The purpose is to
provide a small-sized, low-cost speaker device capable of providing natural high-quality sound to
a wide range of congregations. A speaker device according to the present invention includes, in
addition to a main speaker unit provided on a front baffle of a speaker box and a high sound
auxiliary speaker, one or a high sound auxiliary speaker facing in a direction different from the
front baffle surface. It is characterized in that a plurality is attached. [Selected figure] Figure 1
Speaker device
[0001]
The present invention relates to the technology of high-quality acoustic devices, and more
particularly to a speaker device used for electronic musical instruments such as electronic organs
and electronic pianos installed in halls and churches and the like, and other acoustic devices.
[0002]
A high-quality speaker device used at a short distance to the listener, such as an indoor audio
device, generally has a frequency characteristic such that the power response gradually
decreases in the high-frequency range as shown in FIG. 6-A. It is said that this characteristic is
good.
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On the contrary, in loudspeaker devices used in a wide area, power response is generally kept flat
even in the high range to maintain the clarity as shown in FIG. 6-B. Non-Patent Document 1). For
this reason, a general high-quality sound speaker device is excellent in directivity characteristics
and has a good sound quality, but can not be used in a wide acoustic space such as a hole
because it is a characteristic that can not maintain clarity The In addition, in the conventional
speaker device for loud-speaking, a horn type speaker unit is used, and although the directivity
characteristic is excellent although the clarity is excellent, natural and high-quality sound is
supplied to the entire area of a large congregation seat such as a hall. It had the disadvantage
that it could not be done.
[0003]
This horn-type speaker is a speaker that radiates the sound emitted from the diaphragm of the
driver unit into space through the horn and has sharp directivity, high efficiency, and good
transient characteristics so that crisp noise can be obtained. However, since the reproduction
band is narrower and directivity is stronger than cone type or dome type, the volume differs
depending on the listener's location, and a very large horn is necessary to output bass. There is a
drawback to Such a speaker device for improving the problems of the horn-type speaker unit to
be installed in a hall has to be large and expensive, and it has been difficult to make the device
small and inexpensive.
[0004]
On the other hand, when an electronic instrument such as an electronic organ is installed and
used in a hall or church, there is a difference in the sound quality reaching the listener depending
on the size and structure of the acoustic space to be installed. If the speaker system adapted to
the conditions is designed for each place where the audio equipment is installed, this problem
can be solved, but it becomes one dish for each system, resulting in high cost. Yamamoto Takeo
"Speaker System" Radio Technology Co., Ltd. July 15, 1977 First edition published 123-124
[0005]
The object of the present invention is to solve the above-mentioned problems, that is, in a
general-purpose acoustic electronic device composed of a sound source, an amplifier and a
speaker device, it is installed, and the reception of various sizes and acoustic characteristics. To
provide a small-sized, low-cost speaker device capable of providing a wide range of natural and
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high-quality sounds to a wide range of congregations.
[0006]
The speaker device according to the present invention has a main speaker unit provided on the
front baffle of the speaker box and the high-tone auxiliary speaker, and one or more high-tone
auxiliary speakers facing in a direction different from the front baffle surface. It is characterized
by
The high-tone auxiliary speaker facing in a direction different from the front baffle surface can
be attached to any one of the top plate, the side plate, the bottom plate, and the back plate.
Further, in the speaker device according to the present invention, the volume switching means is
attached to the high-tone auxiliary speaker facing in a direction different from the front baffle
surface. Furthermore, in the speaker device according to the present invention, in addition to the
above-described configuration, means for cutting off sound is attached to the high-tone auxiliary
speaker facing in a direction different from the front baffle surface.
[0007]
The speaker device according to the present invention is different from the front baffle surface in
any of a top plate, a side plate, a bottom plate, a back plate, etc. in addition to the main speaker
unit provided on the front baffle of the speaker box and the high-tone speaker By adopting a
configuration in which one or a plurality of high-tone auxiliary speakers directed in a direction is
attached, the directional characteristics can have a width without increasing in size and without
causing a large increase in cost. In the speaker device of the present invention, the sound volume
adjustment can be performed according to the size and acoustic characteristics of the venue to
be used by attaching the volume switching means to the high-tone auxiliary speaker facing in a
direction different from the front baffle surface It becomes possible. Furthermore, in addition to
the above configuration, the speaker device according to the present invention is installed in a
narrow room by providing a means for cutting off sound to the high-tone auxiliary speaker facing
in a direction different from the front baffle surface. Even in the case of viewing by distance, it is
possible to provide frequency characteristics in which the power response gradually decreases in
the high frequency range, as in a normal high sound quality speaker device.
[0008]
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The speaker device of the present invention will be described below with reference to the
drawings. The speaker device of the present invention is, for example, one main bass speaker 2
and one main treble speaker 3 on the front baffle 1 of the speaker box, as shown in the external
view of FIG. Is equipped. Moreover, it is also possible to make it the so-called 3 way structure
which added the speaker for middle sound further to these main speaker groups, and it is also
possible to set it as the 4 way structure which added the speaker for heavy bass. Then, the highpitched sound auxiliary speaker 4 which is a feature of the present invention is attached to, for
example, the top plate 5 of the speaker box so as to have a directionality different from that of
the speaker attached to the front baffle 1. There is. This is not necessarily one. A plurality of
high-tone auxiliary speakers may be used depending on the required ability. The technical
significance of attaching the high-tone auxiliary speaker 4 facing in a direction different from
that of the front baffle surface is to give a wide directivity to the sound, so the installation place
is not limited to the top plate 5 and side plates and back plates Alternatively, it may be attached
directly to the bottom plate, or may be attached to a desired surface position of the speaker box
via a mount 6 having an inclined surface as shown in FIG. According to this embodiment, by
appropriately adjusting the installation position and the mounting direction (360 degrees), it is
possible to take a wide directivity correspondence according to the conditions of the venue
where the audio device such as an organ is installed.
[0009]
The audio circuit inside the speaker device starts at the input terminal 10 to which the output of
the power amplifier (not shown) is connected as shown in the circuit configuration diagram of
FIG. Through a high-pass filter 11 and is connected to the high-pitched auxiliary speaker 4
through a volume controller 12 composed of a resistor or the like and a circuit breaker 13. The
control levers of the volume adjuster and the circuit breaker are attached to the back of the
speaker box not drawn in the external view, and can be operated easily. The control lever may be
mounted at a lift location other than the rear such as a front baffle. In the circuit configuration
diagram of FIG. 3, the tip of the input terminal 10 is branched and connected to the main highpitched speaker 3 through the high pass filter 14. Further, the end of the input terminal 10 is
branched and connected to the main bass speaker 2 through a low pass filter 15 constituted by a
coil and a capacitor and extracting only the bass component of the audio signal. If the main
speakers are 3 way or 4 way, you can add a low pass filter or a high pass filter. With the abovedescribed apparatus configuration, the main speaker groups 2 and 3 disposed in the front baffle
1 reproduce the sound of the entire sound range in the same manner as a general speaker
apparatus, and further, high-pitched sound assistance disposed in the top 5 or the like The
speaker 4 can compensate for the reduced power response in the high range of the main speaker
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group. Moreover, it is also possible to adjust the volume of the high-pitched sound auxiliary
speaker 4 or stop the sound by using the volume controller 12 and the circuit breaker 13 as
needed.
[0010]
An embodiment of the present utility model will be described below using the drawings. As
shown in the external view of the embodiment shown in FIG. 4, the speaker apparatus of this
embodiment is provided with two main bass speakers 2, 2 'and one main treble speaker 3 in the
front baffle 1 of the speaker box. . Here, in the present embodiment, in order to enhance the bass
reproduction capability, two main bass speakers are provided. And one high-pitched sound
auxiliary speaker 4 which is a feature of the present invention is attached to the top plate 5 of
the speaker box. The audio circuit inside the speaker device starts at the input terminal 10 to
which the output of the power amplifier is connected as shown in the circuit diagram of the
embodiment shown in FIG. 5, and is composed of a coil and a capacitor to extract only high-tone
components from the audio signal. The high-pass filter 11 is connected to the high-pitched
auxiliary speaker 4 through a volume controller 12 composed of a resistor or the like and a
circuit breaker 13. The control levers of the volume adjuster and the circuit breaker are attached
to the back of the speaker box not drawn in the external view, and can be operated easily.
Referring back to the description of the circuit diagram again, the tip of the input terminal 10 is
branched and connected to the main high-tone speaker 3 through the high pass filter 14.
Further, the end of the input terminal 10 is branched and connected to the main bass speaker 2
through the low pass filter 15 and the main bass speaker 2 'through the low pass filter 15'. The
following effects were obtained by the speaker device having the above configuration. That is, as
a result of setting and playing an electronic organ adopting the present speaker device as a
speaker device in a large space of a church, it was heard in various places of the congregation of
the church only by simple adjustment by the volume controller 12 Even in the case, it was
possible to obtain natural and high-quality speech with good clarity. Even when the same
electronic organ is installed in a narrow room and used, the same tone as other general highquality speakers can be obtained by reducing the volume of the high-tone auxiliary speaker or
stopping the sound. The effect of this invention was confirmed by having done things.
[0011]
Although this specification mainly describes the electronic organ in which the speaker device of
the present invention is adopted, the speaker device of the present invention is not limited to the
electronic organ but can be widely adopted in acoustic equipment, and the acoustic equipment is
a hall It can be possible to use it widely even in such a large place or in the room of a home.
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[0012]
It is an external view which shows the basic composition of the speaker apparatus which
concerns on this invention.
It is a figure which shows the example of a mounting form of the speaker for high-pitched sound
assistance which turned to a direction different from a front baffle surface. It is a figure showing
basic circuit composition of a speaker device concerning the present invention. FIG. 1 is an
external view of a speaker device according to an embodiment of the present invention. It is a
circuit block diagram of one Example of the speaker apparatus which concerns on this invention.
It is a figure explaining the frequency characteristic of a speaker.
Explanation of sign
[0013]
DESCRIPTION OF SYMBOLS 1 front baffle 2, 2 'speaker for bass 3 speaker for high-pitched
sound 4 speaker for high-tone assistance 5 facing the direction different from the front baffle
surface 5 top plate 6 mounting base 10 input terminal 11, 14 high pass filter 12 volume control
13 circuit disconnection 15,15 'low pass filter
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