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JP2006295268

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DESCRIPTION JP2006295268
PROBLEM TO BE SOLVED: To provide a speaker system which achieves miniaturization of a first
cabinet and a second cabinet while lowering a bass reproduction limit and improving a sound
pressure characteristic. SOLUTION: Between a first cabinet 1 in which a speaker 6 is disposed
and a second cabinet 2 in which a speaker 6 is disposed, connection ducts 4 are connected to
both the first cabinet 1 and the second cabinet 2. A third cabinet 3 communicated via is provided,
and further, the third cabinet 3 is provided with a duct 5 communicated with the outside.
[Selected figure] Figure 2
Speaker system and sound path forming method
[0001]
The present invention relates to a speaker system and a sound path forming method in which a
sound from the back of a speaker is output through a duct.
[0002]
The speaker system is, for example, separated by a first cavity for housing the speakers, a first
cavity and a barrier, in order to increase the volume of the low frequency range. , A first duct for
communicating the first cavity provided in the first cavity with the second cavity, and an external
space provided in the second cavity And a second duct for communicating with each other, and
further, there is a speaker system in which the second cavities of each cabinet are communicated
with each other by a connection duct (see, for example, Patent Document 1).
[0003]
01-05-2019
1
JP-A-2004-320207 (page 2, FIG. 1)
[0004]
The above-mentioned conventional speaker system is considered to be suitable for lowering the
bass reproduction limit and for improving the sound pressure characteristics, however, the
conventional speaker system has piped connection ducts between the respective speaker
cabinets. Since the speaker cabinets are connected to each other only by connecting the
respective speaker cabinets by sound paths, it does not consider the miniaturization of the
speaker cabinets.
[0005]
By the way, although there are so-called stereo type receivers such as liquid crystal televisions
and brown televisions, it is general to arrange the speakers on the left and right sides of the
liquid crystal panel and the cathode ray tube.
In addition, even in an audio device in which various playback devices such as a CD radio
cassette player and a mini component stereo are integrated, it is general to arrange speakers on
the left and right.
[0006]
In particular, the above-described receiver saves the space of the area excluding the liquid crystal
panel and the cathode ray tube as much as possible to suppress the enlargement of the device,
and lowers the bass reproduction limit within such a limited space. In order to obtain highquality sound, it is necessary to use a small space efficiently.
This is also true for audio devices such as CD radio cassette players and mini component stereos.
[0007]
Then, this invention is made in view of such a condition, and it aims at providing a speaker
system and a sound path formation method which can solve the above-mentioned problem.
01-05-2019
2
[0008]
In order to achieve the above technical problems, the speaker system and the sound path
forming method according to the present invention employ the following technical means.
That is, the speaker system according to claim 1 communicates with both the first cabinet and
the second cabinet between the first cabinet in which the speaker is disposed and the second
cabinet in which the speaker is disposed. A third cabinet is provided, and a duct for
communicating the inside of the cabinet with the outside is provided.
The speaker system according to claim 2 is characterized in that, in claim 1, the third cabinet is
in communication with both the first cabinet and the second cabinet via a connection duct. Do.
The speaker system according to claim 3 is characterized in that in claim 1 or 2, the duct is
provided in the third cabinet. The speaker system according to claim 4 is characterized in that, in
any one of claims 1 to 3, the duct is provided in each of the first cabinet and the second cabinet.
According to a fifth aspect of the present invention, in the speaker system according to any one
of the first to fourth aspects, the volume ratio of the first cabinet to the second cabinet is
approximately 1: 1, and the third cabinet is further provided. A volume ratio of the first cabinet
or the second cabinet may be about 1: 3. According to a sixth aspect of the present invention,
there is provided a method of forming a sound path, wherein the first cabinet having the speaker
and the second cabinet having the speaker are connected to both the first cabinet and the second
cabinet. A third cabinet connected via a duct is provided, and a duct connected between the
inside of the cabinet and the outside is provided to form a sound path for emitting a sound from
the back of the speaker. A sound path forming method according to claim 7 is characterized in
that, in claim 6, the duct is provided in the third cabinet. A sound path forming method according
to claim 8 is characterized in that in claim 6 or 7, the duct is provided in each of the first cabinet
and the second cabinet. In the sound path formation method according to claim 9, in any one of
claims 6 to 8, the volume ratio of the first cabinet and the second cabinet is approximately 1: 1,
and the third cabinet; A volume ratio of the first cabinet or the second cabinet is approximately 1:
3.
[0009]
01-05-2019
3
According to the present invention, between the first cabinet provided with the speaker and the
second cabinet provided with the speaker, both the first cabinet and the second cabinet are
communicated via the connection duct. Since the third cabinet is provided, and the third cabinet
or each of the first cabinet and the second cabinet is provided with a duct for connecting the
inside and the outside of the cabinet, the first and second cabinets are provided. Since the
resonance by the third cabinet can be used in accordance with the resonance by the connection
ducts communicating with the cabinet and the third cabinet, the bass reproduction limit can be
lowered and the sound pressure characteristic can be improved. Moreover, since the third
cabinet is shared by the first and second cabinets, miniaturization of the first and second cabinets
can be achieved.
[0010]
Next, an embodiment of a speaker system according to the present invention will be described. In
the figure, reference numeral 1 indicates a first cabinet, 2 indicates a second cabinet, 3 indicates
a third cabinet, 4 indicates a connection duct, 5 indicates a duct, and 6 indicates a speaker. .
[0011]
In the speaker system according to the present embodiment, as shown in FIGS. 1 and 2, the lower
portion of the first cabinet 1 in which the speaker 6 is disposed and the lower portion of the
second cabinet 2 in which the speaker 6 is disposed It comprises a box-like third cabinet 3
connected in series.
[0012]
On the left and right side walls of the third cabinet 3, a pipe-like connection duct 4 for
communicating the inside of both the first cabinet 1 and the second cabinet 2 with the inside of
the third cabinet 3 is directed inward. A duct 5 extending from the inside to the outside of the
third cabinet 3 extends inward from the side wall on the front side of the third cabinet 3 while
extending.
The pair of connection ducts 4 are offset from each other so as not to be coaxial.
[0013]
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4
In addition, the volume ratio of the first cabinet 1 to the second cabinet 2 is 1: 1, ie, the same
shape, while the third cabinet 3 and the first cabinet 1 or The volume ratio of the second cabinet
2 to the second cabinet 2 is approximately 1: 3. This volume ratio is based on the experimental
result that the improvement of the sound pressure characteristic was good.
[0014]
Thus, in the speaker system according to the present embodiment, the sound from the back of
the speaker 6 provided in the first cabinet 1 and the second cabinet 2 passes through the
connection duct 4, the third cabinet 3 and the duct 5. Go outside.
[0015]
At this time, since the resonance by the connection duct 4 communicating with the first cabinet 1
and the second cabinet 2 and the third cabinet 3 and the resonance by the third cabinet 3 are
matched, the outside through the duct 5 The sound that is emitted (sound from the back of the
speaker 6) can attenuate middle and high tones and lower the bass reproduction limit.
[0016]
The results of this experiment are shown in FIG.
In the figure, the vertical axis is the sound pressure level, the horizontal axis is the reproduction
frequency, and the drawn line of the code A is data of the speaker system according to the
present embodiment, and the drawn line of the code B is a pair of left and right general It is data
of bass reflex type speaker.
In addition, in comparing both, the total volume of both cabinets is made the same, and
experimental conditions, such as an input signal and a measuring method, are made to
correspond.
[0017]
As apparent from this experimental result, in the reproduction of middle and high range, there is
almost no difference between the two, but in the reproduction of low range, the change is seen
01-05-2019
5
from around 300 Hz, and the line A from the line B is It is recognized that the bass reproduction
limit is lowered.
[0018]
Thus, the speaker system according to the present embodiment shares the third cabinet 3 with
the first cabinet 1 and the second cabinet 2 and adds resonance by the third cabinet 3 to the first
cabinet. While achieving downsizing of the first and second cabinets 2, it is possible to lower the
bass reproduction limit.
[0019]
For example, when the speaker system according to the present embodiment is incorporated in a
receiver M such as a liquid crystal television or a brown television, as shown in FIG. 4, a layout is
adopted to surround the display section m1 such as a liquid crystal panel or a brown tube (By
utilizing a space formed in advance below the display unit m1), the low-pitched sound
reproduction limit is lowered to obtain high-quality sound in a limited space without enlarging
the receiver M. Can.
In addition, the code | symbol which shows each structural member attaches | subjects the code |
symbol same as the above.
[0020]
As another embodiment, as shown in FIG. 5, instead of the duct 5 provided in the third cabinet,
the duct 5 in communication with the outside is connected to both the first cabinet 1 and the
second cabinet 2. It may be provided.
Even in this aspect, the above-described effects can be obtained.
[0021]
Further, between the first cabinet 1 in which the speaker 6 is disposed and the second cabinet 2
in which the speaker 6 is disposed, the connection duct 4 is connected to both the first cabinet 1
and the second cabinet 2. A sound path forming method may be provided in which a third
01-05-2019
6
cabinet 3 communicated via is provided, a duct 5 communicating between the inside of the
cabinet and the outside is provided, and a sound path for emitting the sound from the back of the
speaker 6 is formed.
[0022]
As mentioned above, although the speaker system concerning this embodiment was described,
the embodiment mentioned above shows an example of a suitable embodiment of the present
invention, and the present invention is not limited to it, Various modifications can be made
without departing from the scope of the invention.
[0023]
It is a front view which shows the outline of the speaker system concerning this Embodiment.
It is a cross-sectional top view which shows the outline similarly.
It is a graph which similarly shows an experimental result. It is a schematic diagram at the time
of applying to a receiver. It is a cross-sectional top view which shows the outline of another
aspect.
Explanation of sign
[0024]
1 first cabinet 2 second cabinet 3 third cabinet 4 connection duct 5 duct 6 speaker M receiver
m1 display
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