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DESCRIPTION JP2007097001

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DESCRIPTION JP2007097001
[PROBLEMS] To provide a speaker system for listening to music, which has a small occupied
footprint, high fidelity sound quality, and natural sound spread. An amplifier and a player can be
easily installed inside or at the top, and speaker units of left and right channels are configured as
a backload horn type to a left and right integrated enclosure with a speaker system with an angle
to the left and right outside Do. [Selected figure] Figure 1
スピーカーシステム
[0001]
The present invention relates to a method of manufacturing a speaker system
[0002]
For two-channel stereo playback, the left and right speakers are appropriately expanded and
installed, and the listener should listen at the apex of an isosceles triangle with the left and right
speakers at the bottom, and an ideal one that is close to an equilateral triangle.
Music to be played back is also generally recorded in consideration of this, and as the listening
position deviates from the ideal position, the difference in arrival time of the sound or the phase
shift causes great discomfort in the timbre.
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[0003]
However, in reality, it is ideal to install the speakers of the stereo system ideally and to listen in
an ideal position, for the reason such as the increase in the substantial occupied area and the
difficulty of fixing the listening position, etc. It is considered that the center unit to be configured
is placed close to each other by sandwiching the left and right speakers, and it is often deviated
from the ideal listening position. In addition, many music lovers tend to listen to the music itself
or the tone itself prior to the spread of the left and right sounds. JP 2001-32781 JP JP 1994105385 JP
[0004]
Stereo systems that are generally commercially available tend to be larger, which is generally
unacceptable, when aiming for sound fidelity. In addition, when aiming for the spread of sound
and faithful sound field reproduction, install the speaker far enough away, and if the speaker is
installed close to the wall or furniture etc., the sound quality is often degraded, and install away
from them. As a result, the substantial occupied footprint tends to be larger. On the other hand,
in a stereo system with a small footprint such as a so-called radio cassette player or mini
computer, the change in timbre depending on the listening position tends to be small, but the
fidelity of the sound is lowered, or the music type to be reproduced Tend to cause For this
reason, a stereo system with a small footprint, a limited listening position, and high sound fidelity
is desired so that music lovers can enjoy the music sufficiently. The present invention has been
made to solve such conventional problems, and the object of the present invention is to provide a
high sound fidelity and an exclusive installation in small spaces such as general houses and small
businesses. It provides a speaker system with a small area and sufficient music enjoyment.
[0005]
Speaker systems such as back load horn type left and right are configured as an integral
enclosure so that the user can easily install separate compact amplifier, compact disc player,
memory player etc. inside or above, Provide an appropriate space or shelf, etc., and operate on
the front, side, or top. At this time, by providing a space or a shelf, the function of the enclosure
should not be disturbed.
[0006]
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When installing an amplifier or player, make through holes in the enclosure so that connecting
cables can be passed inside. The speaker connection terminals should be mounted close to the
amplifier so that cable routing can be simplified and shortened.
[0007]
The speaker unit should be compact and high-fidelity within the range that does not cause any
functional problems in order to miniaturize the entire system, and ideally be a high-performance
compact full-range unit, but the speaker unit It may be separated.
[0008]
The left and right speaker units are arranged as close as possible in order to improve so-called
swaying phenomenon of bass in the small unit.
In addition, the left and right speaker units do not cross central axes in any arrangement in order
to reduce distortion due to sound interference at the front of the system.
[0009]
The right speaker unit is directed to the right and the left speaker unit is directed to the left to
improve the spread of the left and right sounds. When installing the system close to a wall or
furniture, place the right speaker unit to the left and the left speaker unit to the right. Further, in
the case of further downsizing, the left and right speaker units are disposed vertically and the left
and right units are respectively directed left and right. The inclination to the left and right of each
speaker is disposed on the right and left respectively at an angle of 5 degrees to 60 degrees to
the right and left with respect to the front surface. Basically, the angle is 30 degrees from the
front, but in consideration of the frequency characteristics of the speaker unit, the usage
condition of the speaker system, etc., an optimal angle is set.
[0010]
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In order to reduce the interference of the left and right sounds in the enclosure, the left and right
partitions are provided in the middle or on the whole of the sound path. In order to reduce
standing waves generated at the time of sound generation, the air chamber makes the front plate
and the back surface as non-parallel as possible, and arranges a noise reduction material as
necessary. In addition, in order to reduce leakage from the medium and high-pitched ducts and
the like, a silencing material is disposed as necessary.
[0011]
When installing the amplifier inside, consider the size of the opening and the ventilation method
in order to dissipate the heat generated by the amplifier. The same applies to the case where a lid
or the like is provided at the top to store the player or the like.
[0012]
The stereo set is basically placed in one place, but it should be caster if easy movement is
considered. In addition, design such as shape and hue is considered so that music enthusiasts can
handle without discomfort.
[0013]
The amplifier should be as high quality and as low in noise as possible, be built into a system,
and be compact with the necessary functions. Less heat is better, but if it is more, it should be
taken into consideration so as not to interfere with the function. Players and music software
should be as high quality as possible.
[0014]
According to the speaker system of the present invention, since what has conventionally been
constituted by the three units of the left and right speaker systems and the center unit can be
integrally configured, the substantial occupation of the entire device including the space around
the speakers The footprint can be significantly reduced.
[0015]
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For example, when a 10 cm diameter speaker unit is used, the footprint can be approximately 30
cm × 30 cm, but the speaker system of the present invention can be floor-mounted, so in
general, Compared with the thing which does not install in a floor directly, the reduction effect of
a substantial occupied floor area can be heightened.
[0016]
Using a high performance speaker system such as a back load horn type, and despite the small
unit, it is possible to improve the sway phenomenon of the bass due to the unit proximity
arrangement of the left and right channels, and has high stretch and high fidelity You can play
music.
[0017]
Since the speaker units of the left and right channels are arranged outward, respectively, unlike
monaural reproduction, it is possible to obtain a sound without any sense of discomfort.
Further, since the central axes of the left and right channel speaker units are not crossed,
distortion of sound due to interference can be reduced.
[0018]
Compared to the case where the left and right speaker units are expanded and installed, the user
is not limited to the ideal listening position and enjoys music, because the change in timbre due
to the listening position, the difference in arrival time of sound, and the change in phase are
small. be able to.
[0019]
Hereinafter, the form which realizes the speaker unit of the present invention based on a drawing
is explained.
[0020]
As shown in FIG. 1, the speaker system of this patent mainly includes the right speaker unit 1,
the left speaker unit 2, and the enclosure 3.
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[0021]
The right speaker unit 1 and the left speaker unit 2 are arranged relatively close to each other,
and the angle to the front is basically about 30 degrees, but the frequency characteristics of the
speaker unit, the usage condition of the speaker system, etc. Consider the optimum angle.
By shifting the mounting height from side to side, it is considered not to cross the central axis
direction.
[0022]
In order to reduce the interference of the left and right sound inside the enclosure, the left and
right air chambers and the walls separating the sound paths are arranged from the vicinity of the
speaker unit to approximately the center of the sound path length.
[0023]
As shown in FIG. 1, the sound path when the enclosure 3 is a backload horn type considers air
chamber capacity, throat cross-sectional area, cross-sectional enlargement ratio, and smooth
sound path configuration so that bass can be amplified efficiently. Do.
[0024]
The amplifier can be installed at the center of the enclosure 3 and the wiring path from the
speaker unit can be minimized.
In addition, an open / close door to the upper part can be attached so that the player can be put
on the upper part of the enclosure 3 and stored.
[0025]
Next, a speaker system according to a second embodiment is shown in FIG.
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In this example, the floor space is reduced further than in the speaker system of the first
embodiment.
As in the first embodiment, the right speaker unit 1, the left speaker unit 2, and the enclosure 3
are mainly configured.
[0026]
The right speaker unit 1 and the left speaker unit 2 are disposed relatively close to each other,
and are disposed on the right and left respectively at an angle of about 30 degrees to the right
and left with respect to the front.
Take care to make the mounting height as close as possible to the left and right.
In addition, as long as the mounting angle of the left and right speaker units is maintained, the
upper and lower sides may be reversed.
[0027]
The enclosure 3 of the second embodiment is also a back load horn type, and the consideration
for the air chamber, the sound path, etc. is the same as that of the first embodiment.
Further, the same applies to the consideration of reducing the interference of the left and right
sound in the enclosure 3.
[0028]
The amplifier can be installed at the bottom of the enclosure 3 and the player can be placed on
the top of the enclosure 3.
[0029]
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Next, a speaker system according to a third embodiment is shown in FIG.
In this example, although it is similar to the speaker system of the first embodiment, the speaker
unit 1 and the speaker unit 2 are configured to have substantially the same height. The speaker
unit 1 for the right, the speaker unit 2 for the left, the flange 6 and the enclosure 3 are mainly
configured.
[0030]
By shifting the flanges 6 with angles or the left and right speaker unit mounting angles up and
down, it is considered not to cross the central axis direction.
[0031]
The enclosure 3 of the third embodiment is also a back load horn type, and the consideration for
the air chamber, the sound path, etc. is the same as that of the first embodiment.
Further, the same applies to the consideration of reducing the interference of the left and right
sound in the enclosure 3.
[0032]
Next, a speaker system according to a fourth embodiment is shown in FIG. This example is an
example similar to the speaker system of the second embodiment, but in consideration of
equalizing the reaching heights of the sound waves radiated from the left and right speaker units
to the listener. The speaker unit 1 for the right, the speaker unit 2 for the left, and the enclosure
3 are mainly configured.
[0033]
Consideration is given to bring the central axis direction closer to the listening position by
shifting the flanges 6 with angles or the mounting angle of the left and right speaker units up
and down or by using a flange as in the third embodiment.
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[0034]
The enclosure 3 of the fourth embodiment is also a back load horn type, and the consideration
for the air chamber, the sound path, etc. is the same as in the first embodiment.
Further, the same applies to the consideration of reducing the interference of the left and right
sound in the enclosure 3.
[0035]
1 is a speaker system according to a first embodiment. 7 is a speaker system according to a
second embodiment. 7 is a speaker system according to a third embodiment. 21 is a speaker
system according to a fourth embodiment.
Explanation of sign
[0036]
1 Speaker unit for right channel 2 Speaker unit for left channel 3 enclosure 4 amplifier 5 player
6 flange
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