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JP2006191510

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DESCRIPTION JP2006191510
An object of the present invention is to eliminate internal reflection pressure to a speaker unit, to
fully exhibit the ability of the speaker unit, and to remarkably improve the sound quality. A top
plate of a box is removed, and a speaker unit (B) identical to the speaker unit (A) is mounted in
the box in order to cancel the sound from behind the speaker unit (A). First of all, when the top
plate of the box is removed, the sound coming out of the back of the speaker unit (A) comes out
from here, and the internal reflection of the box disappears. The sound coming from behind the
speaker unit is out of phase with the sound coming from the front, and when it mixes, the
cancellation sound disappears. The sound coming out of the back of the speaker unit (A) is
canceled by the sound coming out of the front of the speaker unit (B), and the sound coming out
of the back of the speaker unit (A) comes out of the box and can be solved around the front of
the box. [Selected figure] Figure 1
ノンプレッシャースピーカーシステム
[0001]
The present invention relates to the inner and outer shape of a speaker system.
[0002]
The conventional speaker system is a shape which attached the speaker unit (A) which makes a
sound to the front of a box as shown in FIG.
[0003]
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1
However, according to the above technology, the sound emitted from behind the speaker unit (A)
itself is reflected in the box and bounces back to the speaker unit (A).
For this reason, the speaker unit (A) always emits sound while receiving internal reflection
pressure, and the speaker unit can not fully exhibit its ability.
Therefore, the object of the present invention is to eliminate internal reflection pressure to the
speaker unit (A) and to sufficiently exhibit the ability of the speaker unit (A) to remarkably
improve the sound quality.
Means to solve the problem
[0004]
The invention for solving the above problems removes the top plate of the box in order to
eliminate the internal reflection pressure to the speaker unit (A) and to fully exhibit the capability
of the speaker unit (A), and the speaker unit A speaker unit (B) identical to the speaker unit (A) is
mounted in a box in order to cancel the sound from the back of (A). This is a speaker unit that
produces the same sound back and forth, but uses the characteristic that the sound emitted
backward is the opposite phase sound to the sound emitted forward. First of all, when the top
plate of the box is removed, the sound coming out of the back of the speaker unit (A) from here
escapes, and the internal reflection pressure of the box disappears. However, the sound coming
from the back of the unit (A) turns around the front of the box and mixes with the sound coming
from the front of the speaker unit (A). The sound coming from behind the speaker unit is out of
phase with the sound coming from the front, and when it mixes, the cancellation sound
disappears. The sounds that blend here are mainly low-range sounds. Therefore, the low range
becomes extremely lacking. The reason is that the directivity is wide and the sound is easy to
wrap around to the middle and high regions where the directivity is narrow and the sound is
hard to wrap around. Therefore, the same unit (B) as the speaker unit (A) is mounted on the
lower surface of the speaker unit (A). The sound coming out of the back of the speaker unit (A) is
canceled by the sound coming out of the front of the speaker unit (B), and the sound coming out
of the back of the speaker unit (A) goes out of the box and solves the problem of getting around
the front of the box. The reason why the speaker units (A) and (B) are required to be the same is
that if the units are different, the characteristics of the reproduced sound are also different and
the sound can not be canceled well.
04-05-2019
2
Effect of the invention
[0005]
According to the invention, the internal reflection pressure to the speaker unit (A) disappears and
the sound coming from the back of the speaker unit (A) disappears to the front, the speaker unit
can fully exhibit its ability, and the sound quality is significantly improved. .
BEST MODE FOR CARRYING OUT THE INVENTION
[0006]
One embodiment of the present invention is shown in FIG.
Remove the top plate behind the speaker unit (A), that is, the top plate (C) of the box. And attach
the speaker unit (B) to the top of the back of the speaker unit (A) to cancel the sound coming
from the back of (A). At this time, the mounting position of the speaker unit (B) should be as close
as possible to the unit (A). The reason is to cancel out the sound coming from behind the speaker
unit (A) and make it cheaper. Speaker units (A) and (B) must be identical units. In addition, the
connection of the speaker units (A) and (B) may be either in series or in parallel, but should be
the same output.
Effect of the embodiment
[0007]
According to the invention, the internal reflection pressure to the speaker unit (A) disappears and
the sound coming from the back of the speaker unit (A) itself disappears to the front, and the
speaker unit (A) can fully exhibit its ability, the sound quality Significantly improved. A blind
hearing was conducted with 20 people for the speaker system (Fig. 1) and the prior art system
(Fig. 2) using the invention, and all 20 people confirmed the effect.
04-05-2019
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Other embodiments
[0008]
Although the top plate of the box is removed in FIG. 1, the same effect can be obtained by
removing a plate (indicated by hatching in FIG. 1) opposite to the speaker unit (A).
[0009]
It is a perspective view showing one embodiment of this invention.
It is a perspective view which shows a prior art.
Explanation of sign
[0010]
(A): Speaker unit producing sound (A) (B): Speaker unit canceling the sound coming from behind
the speaker unit (A) (B) (C): Box top plate
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