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JP2015056770

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This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
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DESCRIPTION JP2015056770
A loudspeaker driver with increased dynamic range and expanded frequency response is
provided. A loudspeaker driver (10) comprises a diaphragm (20), a connection tube (24), first
and second voice coils (28, 30), and first and second magnet assemblies (16, 18). The connecting
tube 24 has a first section, a second section and an intermediate section. The first voice coil 28 is
connected to and surrounds the first section, and the second voice coil 30 is connected to and
surrounds the second section. The first magnet assembly 16 is configured to suspend the first
voice coil 28 in the first magnetic field, and the second magnet assembly 18 is configured to
suspend the second voice coil 30 in the second magnetic field. . The connection tube 24
intersects the diaphragm 20, and the middle section of the connection tube 24 is connected to
the diaphragm 20. [Selected figure] Figure 2
Loudspeaker driver with dual electromagnetic assembly
[0001]
The present disclosure relates generally to loudspeaker drivers, and more particularly to
loudspeaker drivers that include two electromagnetic structures.
[0002]
Loudspeakers have long been used to provide audio output to the audience.
Electrical signals representing sounds of various characteristics are converted by the loudspeaker
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into vibration of the diaphragm. Such movement of the diaphragm produces a sound wave that
can be heard by someone nearby. Typically, the diaphragm of the loudspeaker is cone shaped
and sound waves are emitted from the cone towards the general direction that the open end of
the cone is pointing.
[0003]
Loudspeakers typically use a voice coil. The voice coil is wound around a hollow cylinder or tube
made of paper, aluminum, resin or the like, and is positioned within the magnetic field of the
permanent magnet. Also, the hollow cylinder or tube is connected to the diaphragm. When
current flows in the coil, a magnetic field is generated around the hollow cylinder or tube. The
hollow cylinder or tube is attracted or repelled by the magnetic field of the permanent magnet
based on the direction of the current. When the direction of the current switches, the attraction
or repulsion also switches. In this way, the hollow cylinder or tube moves back and forth, moving
the diaphragm back and forth. This vibration produces the sound produced by the loudspeaker.
[0004]
Loudspeaker drivers are described in the present disclosure. According to one embodiment, the
loudspeaker driver comprises an acoustical diaphragm, a hollow cylinder or connecting tube, first
and second voice coils, and first and second magnet assemblies. The connecting tube has a first
section near the first end of the connecting tube, a second section near the second end of the
connecting tube, and an intermediate section between the first and second sections. The first
voice coil is connected to and surrounds at least a portion of the first section of the connecting
tube. The first voice coil has a first audio lead and a second audio lead. The second voice coil is
connected to and surrounds at least a portion of the second section of the connecting tube. The
second voice coil has a first audio lead and a second audio lead. The first magnet assembly is
configured to suspend the first voice coil in the first magnetic field, and the second magnet
assembly is configured to suspend the second voice coil in the second magnetic field. The
connecting tube intersects the acoustical diaphragm and the middle section of the connecting
tube is connected to the acoustical diaphragm.
[0005]
According to another aspect of the present disclosure, a loudspeaker assembly is provided. The
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speaker assembly comprises a first speaker. The first speaker is a first truncated cone frame
portion supporting the first acoustical diaphragm, and a first voice coil joined to the first
acoustical diaphragm, the first positive lead wire and the second voice coil A first magnet
assembly configured to suspend the first voice coil within a first magnetic field, the first voice
coil having a negative lead wire of And the first magnet assembly. The loudspeaker assembly
further comprises a second loudspeaker. The second speaker is a second truncated cone frame
portion supporting the second acoustical diaphragm, and a second voice coil joined to the second
acoustical diaphragm, the first positive lead wire and the second voice coil A second magnet
assembly configured to suspend the second voice coil within a second magnetic field, the second
voice coil having a negative lead wire of And the second magnet assembly. An audio signal driver
is electrically connected to each of the first and second voice coils, and the first and second voice
coils are opposite so that the first and second acoustical diaphragms vibrate in unison. Are wired
to the poles of the In one aspect, the first and second speakers are disposed such that the wideangle ends of the first and second truncated cone frame portions face each other.
[0006]
The above as well as other aspects, features and advantages of the present disclosure will
become more apparent in light of the following detailed description when taken in conjunction
with the accompanying drawings.
[0007]
FIG. 5 is a side view of a loudspeaker driver in accordance with various embodiments of the
present disclosure.
[0008]
FIG. 2 is a cutaway view of the loudspeaker driver of FIG. 1 in accordance with various
embodiments of the present disclosure.
[0009]
FIG. 7 is a cutaway view of a loudspeaker driver in accordance with various embodiments of the
present disclosure.
[0010]
FIG. 1 is a three dimensional (3D) view of a speaker system in accordance with the present
disclosure.
03-05-2019
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[0011]
It illustrates the axis of the driver.
[0012]
It illustrates the high frequency propagation pattern of the second wave along the axis of the
driver.
Fig. 6 illustrates the low frequency propagation pattern of the second wave along the axis of the
driver.
[0013]
5 is a cross-sectional view of the speaker system shown in FIG. 4 in accordance with an
embodiment of the present disclosure.
[0014]
FIG. 7 is a cross-sectional view of a speaker system in accordance with another embodiment of
the present disclosure.
[0015]
FIG. 7 is a 3D view of another embodiment of a loudspeaker system according to the present
disclosure.
[0016]
For ease of understanding, the same reference numerals will be used where it is possible to
indicate common equivalent elements in the figures.
For the purpose of drawing, the diagram of the drawing is simplified and not necessarily to scale.
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4
The accompanying drawings illustrate embodiments of the present disclosure and should not
themselves be considered as limiting the other equally effective embodiments to the permissible
disclosure scope.
Correspondingly, it has been considered without further mention that features or steps of one
embodiment may be beneficially employed in another embodiment.
[0017]
The present description illustrates the principles of the present disclosure.
Thus, it is to be appreciated that without departing from the explicit disclosure or illustration, it
is possible for those skilled in the art to devise various modifications that implement the
disclosure and the principles contained within its spirit and scope Will.
[0018]
All exemplary and conditional language described herein are intended as pedagogical aims to
assist the reader in understanding the principles and concepts of the present disclosure
contributed by the inventor to advance the technology. And is intended to be construed without
limitation to the examples and conditions so described.
[0019]
Further, all descriptions describing the principles, aspects, and embodiments of the present
disclosure, as well as their specific illustrations, are intended to include structural and functional
equivalents.
In addition, such equivalents may include both currently known equivalents as well as
equivalents to be developed in the future, ie, any element that performs the same function,
regardless of structure. Intended.
[0020]
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5
FIG. 1 is a side view of one embodiment of a loudspeaker driver 10.
According to various embodiments of the present disclosure, the loudspeaker driver 10
comprises a frame 12 having holes 14 or openings.
The frame 12 encloses and protects the internal components of the loudspeaker driver 10, in
particular the components that generate sound, so that the holes 14 allow sound waves to escape
in various directions.
In this case, the loudspeaker driver 10 described in the present disclosure may also be an
omnidirectional speaker.
As shown, the frame 12 may comprise two symmetrical sections 13, 15, for example a frustum.
These two sections 13, 15 may be arranged along the barrier 21 so that the respective wideangle ends 17, 19 face each other and are joined, as shown. In other embodiments, frame 12 may
include any other suitable shape. Also, the frame 12 is configured to a suitable size based on
dimensional limitations and / or desired frequency characteristics. The loudspeaker driver 10
also includes a first magnet assembly 16 and a second magnet assembly 18. Each magnet
assembly 16 and 18 may include at least one permanent magnet for generating a magnetic field.
The magnetic field generated by the first and second magnet assemblies 16 and 18 may be
arranged such that the south pole is directed towards (or attracts) its north pole, or in another
embodiment the magnetic field is The pole and the south pole may be arranged to be in opposite
directions (repel each other).
[0021]
FIG. 2 is a cutaway view of the loudspeaker driver 10 of FIG. According to various embodiments
of the present disclosure, the loudspeaker driver 10 further comprises a diaphragm 20 or other
type of membrane. It should be noted that the diaphragm 20 comprises any suitable material.
The diaphragm 20 may be flat and substantially vertical as shown. The diaphragm 20 may be
connected to the frame 12 by a suspension 22. In some embodiments, the suspension 22 may be
omitted and instead the diaphragm 20 may be connected directly to the frame 12. The
suspension 22 may be a ring suspension that surrounds the outer edge of the diaphragm 20
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when present in various embodiments. The suspension 22 holds the diaphragm 20 properly and
allows the diaphragm 20 to vibrate for the purpose of generating sound waves. Because of the
inherent configuration of the substantially flat diaphragm 20 instead of the conventional coneshaped membrane, the suspension 22 is sufficient without the need for additional suspension
features such as "spider" suspension elements. It should be noted that the diaphragm 20 can be
supported.
[0022]
The loudspeaker driver 10 also comprises a connecting tube 24. The connection tube 24 extends
from the first magnet assembly 16 to the second magnet assembly 18. The connection tube 24
may be made of a material such as paper, aluminum, resin or the like. In some embodiments,
connection tube 24 may include a hollow end. In this way, the connection tube 24 is properly
held by the posts 25, 27 which project from the respective magnet assembly 16, 18 respectively.
The connecting tube 24 may be configured to slide along the posts 25, 27. The side of the post
and the inside of the connection tube 24 may be formed with a slit that prevents the formation of
an air pocket at the hollow end.
[0023]
It should be appreciated that the connecting tube 24 may be otherwise shaped, such as, for
example, a connecting member, a solid cylinder member, a rod and the like.
[0024]
The connection tube 24 is inserted into the hole of the diaphragm 20.
In some embodiments, one half of the connection tube 24 may be positioned on one side of the
diaphragm 20 and the other half may be positioned on the other side. Also, the connection tube
24 may be configured such that its axis is perpendicular to the plane of the diaphragm 20. In
addition, the connection tube 24 may pass through or intersect the center of the diaphragm 20.
The connection tube 24 may also be configured to be joined to the diaphragm 20 at the
intersecting area, the intersecting area being bonded by any suitable type of adhesive 26 May be
According to some embodiments, adhesive 26 may be a grit, or other suitable adhesive that may
form a ring around the outside of connecting tube 24.
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[0025]
In addition, the loudspeaker driver 10 comprises a first voice coil 28 and a second voice coil 30.
The first and second voice coils 28 and 30 have a wire provided with a covering material for
covering the core wire. The first voice coil 28 is wound around the first end of the connection
tube 24, and the second voice coil 30 is wound around the second end of the connection tube 24.
The voice coils 28 and 30 are not only wound around the connection tube 24 but are also
connected to the connection tube 24 so that the movement of the voice coils 28 and 30 by
magnetic force causes the connection tube 24 to move sequentially. .
[0026]
As shown, voice coils 28 and 30 may be wound in the same direction. However, in other
embodiments, voice coils 28 and 30 may be wound in opposite directions. One end of each voice
coil 28 and 30 is joined to a first audio lead 32, shown as a positive ("+") lead. The other end of
each voice coil 28 and 30 is joined to a second audio lead 34, shown as a negative ("-") lead. In
the second audio lead 34, the positive and negative leads may be colored wires such as black and
red. As shown, audio leads from one voice coil are connected to specific audio leads from the
other voice coil. However, according to some embodiments, an audio lead from one voice coil
may be connected to another audio lead from the other voice coil. The particular design depends
primarily on the directivity of the two magnetic field poles (i.e., the north and south poles)
generated by the permanent magnets of the first and second magnet assemblies 16 and 18.
[0027]
The magnet assemblies 16 and 18 may each comprise one or more permanent magnets
configured to generate a permanent magnetic field in a general direction relative to the end of
the connecting tube 24. For example, according to some embodiments, the permanent magnets
may be ring magnets that surround the voice coils 28 and 30. In other embodiments, the
permanent magnet may include other shapes and may be positioned along the axial direction of
the connection tube 24. These or other configurations may be used to generate a permanent
magnetic field in a general direction with respect to the center points of voice coils 28 and 30.
[0028]
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According to some embodiments, the loudspeaker driver 10 may simply comprise an acoustical
diaphragm 20 and a connecting tube 24, as shown in FIG. The connection tube 24 has a first
section close to the first end of the connection tube 24, a second section close to the second end
of the connection tube 24, and an intermediate section between the first and second sections.
May be included. The loudspeaker driver 10 also includes a first voice coil 28. The first voice coil
28 is connected to and surrounds at least a portion of the first section of the connection tube 24.
The first voice coil 28 has a first audio lead and a second audio lead. The loudspeaker driver 10
also includes a second voice coil 30. The second voice coil 30 is connected to and surrounds at
least a portion of the second section of the connection tube 24. The second voice coil 30 has a
first audio lead and a second audio lead. The loudspeaker driver 10 is also configured to suspend
the first voice assembly 28 in a second magnetic field and a first magnet assembly 16 configured
to suspend the first voice coil 28 in a first magnetic field. And a second magnet assembly 18. The
connection tube 24 intersects the acoustical diaphragm 20, and the middle section of the
connection tube 24 is connected to the acoustical diaphragm 20.
[0029]
According to an additional embodiment, the loudspeaker driver 10 described above is further
configured such that the first magnet assembly 16 comprises a first permanent magnet and the
second magnet assembly 18 comprises a second permanent magnet. It may be For example, the
first permanent magnet may be a ring magnet positioned around the first voice coil 28, and the
second permanent magnet may be a ring magnet positioned around the second voice coil 30.
Good. The first magnet assembly 16 and the second magnet assembly 18 may include an
alignment structure configured to allow the connecting tube 24 to move substantially axially. For
example, the axial direction may be defined as the axial direction of the connection tube 24. The
loudspeaker driver 10 further causes the first voice coil 28 and the second voice coil 30 to
cooperate with each other to connect the force tube 24 by the first voice coil 28 and the second
voice coil 30 receiving electrical signals simultaneously. In addition, the connection tube 24 may
be defined to be configured to be substantially axially back and forth.
[0030]
According to some embodiments, the loudspeaker driver 10 described above is further defined to
be substantially flat when the acoustical diaphragm 20 is stationary. For example, the acoustical
diaphragm 20 may be stationary when no electrical signal is provided to the loudspeaker driver
03-05-2019
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10. When receiving an electrical signal (for example, an audio signal), the diaphragm 20 vibrates
so that sound waves are emitted from the loudspeaker driver 10. In some embodiments, the
acoustical diaphragm 20 may have a circular shape, but according to other embodiments the
diaphragm is square, rectangular or another suitable shape It is also good.
[0031]
Further, the loudspeaker driver 10 also comprises a frame 12. The frame 12 may be configured
to support the first magnet assembly 16 and the second magnet assembly 18, and may be
configured to maintain a preset spacing therebetween. The loudspeaker driver 10 may also
include a suspension 22 (eg, a ring suspension) configured to connect the edge of the acoustical
diaphragm 20 to the frame 12. The suspension 22 may have any suitable shape based on the
shape and edge dimensions of the corresponding diaphragm 20. In addition, the shape of the
suspension 22 may be based on the inner size or shape of the frame 12. The frame 12 preferably
comprises at least one hole 14 exposing the acoustical diaphragm 20 around. The holes 14 allow
sound from inside the frame 12 to the surrounding area where the audience can hear the sound.
[0032]
In addition, the loudspeaker driver further connects the first audio lead of the first voice coil 28
to the first audio lead of the second voice coil 30, and the second audio lead of the first voice coil
28 It is defined to be connected to the second audio lead of the two voice coil 30. In this case, the
pole of the first magnetic field will be substantially aligned with the pole of the second magnetic
field. Thus, while the second voice coil 30 applies a pulling force, the first voice coil 28 applies a
pressing force to the diaphragm 20 while the second voice coil 30 applies a pressing force. The
first voice coil 28 applies a pulling force. The forces in this case are such that the connecting
tubes 24 are moved in the same direction without the voice coils 28 and 30 acting in opposition.
[0033]
In another embodiment, the first voice coil 28 and the second voice coil 30 are wound in the
same direction around the connection tube 24 such that the first magnetic field pole is
substantially opposite to the second magnetic field pole. It may be In other words, the north pole
is both inside (or outside) and the south pole is outside (or inside). In this case, the first voice coil
28 and the second voice coil 30 are wound in the opposite direction around the connection tube.
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Again, the voice coils 28 and 30 will be biased to move the connecting tube 24 in the same
direction without counteracting.
[0034]
Due to the two electromagnetic structures as described herein, the force acting on the diaphragm
20 can essentially be doubled. For example, in any electrical signal, one voice coil exerts a
pushing force (i.e., while the other voice coil is applying a pulling force to the connection tube 24
(i.e., away from the center of the frame 12). Facing to the center of the frame 12) feed the
connecting tube 24. The result is a rapid response of the diaphragm 20 and a rapid movement. It
increases the dynamic range of the loudspeaker driver 10. Because the diaphragm moves with
high acceleration by both pulling and pushing forces, the diaphragm transmits forces more
effectively when generating sound. That is, it is highly efficient in power conversion of electricity
to sound energy. Also, dual pushing and pulling voice coils can extend both the high frequency
response and low frequency response of the loudspeaker driver 10.
[0035]
Furthermore, the symmetrical aspects of the loudspeaker driver 10 described in the present
disclosure allow for better control of the diaphragm 20, thereby resulting in a more accurate
reproduction of the audio signal. By applying pushing and pulling forces to the diaphragm, the
vibration of the diaphragm more accurately follows the acoustoelectric signal, resulting in a
higher definition of sound reproduction as compared to conventional devices.
[0036]
The teachings and principles of the present disclosure may constitute various embodiments to
achieve a loudspeaker with increased dynamic range. In one embodiment, two conventional
speakers may be joined together with the openings, that is, between the diaphragms and
diaphragms, and the poles may be wired in opposite directions so that the two diaphragms
vibrate simultaneously. In such an embodiment, the two diaphragms vibrate in unison as if they
were one signal diaphragm. Such an embodiment is illustrated in FIG.
[0037]
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Referring to FIG. 3, the speaker assembly 100 includes first and second speakers 112-1 and 1122. The first speaker 112-1 includes a truncated cone frame portion 113 having a cone-shaped or
truncated cone-shaped diaphragm 120-1 joined to the frame portion 113 by a suspension 122.
The first speaker 112-1 further includes the magnet assembly 116 and the voice coil 128 as
described above. Similarly, the second speaker 112-2 includes a truncated cone frame portion
115 having a cone-shaped or truncated cone-shaped diaphragm 120-2 joined to the frame
portion 115 by a suspension 122, a magnet assembly 118, and a voice coil 130. And. In the first
and second speakers, the wide-angle ends 117 and 119 of the frame portions 113 and 115 face
each other, and in this state, at least a part of the diaphragms 120-1 and 120-2, for example, the
portion 123 is connected to each other Are configured to Since each diaphragm 120-1 and 1202 has a cone shape or a truncated cone shape, the portion 123 is circular, so that the diaphragms
120-1 and 120-2 are connected in a circle. It should be recognized. In another embodiment, the
diaphragms 120-1 and 120-2 are not in contact with each other.
[0038]
Speaker assembly 100 further includes an audio signal driver 150. The audio signal driver 150 is
for electrically driving the voice coils 128 and 130 including the positive output unit 152 and the
negative output unit 154. Illustratively, the audio signal driver includes an audio amplifier,
receiver, etc. or any other known device that provides an electrical signal indicative of the audio
signal. Each voice coil 128, 130 includes a positive audio lead 132 and a negative audio lead
134. In this embodiment, the voice coils 128, 132 are wired to opposite poles so that the two
diaphragms vibrate in unison. For example, the positive audio lead 132-1 of voice coil 128 is
connected to the positive output 152 of driver 150 while the positive audio lead 132-2 of voice
coil 130 is the negative output of driver 150 Connected to 154. Similarly, the negative audio lead
134-1 of the voice coil 128 is connected to the negative output 154 of the driver 150 while the
negative audio lead 134-2 of the voice coil 130 is positive of the driver 150. It is connected to
the output 152. In this case, while the second voice coil 130 applies a pulling force to the
diaphragm 120-2, the first voice coil 128 applies a pressing force to the diaphragm 120-1, and
While the voice coil 130 applies a pushing force, the first voice coil 128 will apply a pulling
force. Thus, the two diaphragms 120-1 and 120-2 vibrate simultaneously as if they are one
signal diaphragm.
[0039]
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In another embodiment, a wooferless, boxless loudspeaker system is provided that includes a
plurality of drivers and driver placement methods. In this embodiment, the loudspeaker system
uses a multi-driver as described above, and the low frequency is enhanced by the outputs of the
other tweeter drivers while the equiangularly distributed drivers evenly distribute the high
frequencies. Generate a space of sound waves. The placement of the driver can be placed
anywhere else that angle is important. That is, the arrangement is concentric and equiangular
distribution. The configuration of the driver is three-dimensional, and thus the resulting shape
may be cubic, flat, spherical, cylindrical or other shapes.
[0040]
Referring to FIG. 4, the figure shows a speaker system 200 viewed in three dimensions (3D)
according to the present disclosure. The loudspeaker system 200 comprises a plurality of drivers
10 as described above in connection with FIGS. 1 to 3 and is configured in a three-dimensional
spherical configuration.
[0041]
Referring to FIG. 5A, there is a geometrically symmetrical imaginary axis 214 for each driver 10.
Each driver 10 includes a front or face 216 and a back or face 218. A virtual axis 214 extends in
both directions from the back surface 218 of the driver 10 through the front surface 216.
Because the driver's diaphragm moves along an axis 214, this axis also indicates the direction of
propagation of the sound waves, which generally propagates from the front face 216 of the
driver along this axis 214. 5B illustrates the high frequency propagation pattern along axis 214
at driver 212, and FIG. 5C illustrates the low frequency propagation pattern along axis 214 at
driver 212. In this embodiment, a seal or muffler 224 is added to the back or back of the driver
10 to prevent the front and back frequencies from interfering with each other.
[0042]
Various support mechanisms can be configured to support the multi-driver 10. The drivers 10
may be spaced apart from one another such that the axes of symmetry extending from the front
face of the driver intersect at a point centered on the inner volume of the support structure. In
some embodiments, the axis of symmetry may pass through a relatively small volume at or near
the center of the interior. The driver 10 may be equally spread around the interior where each
03-05-2019
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face of the driver 10 is oriented in the direction in which it is directed. When the drivers 10 are
evenly disposed, the angles formed by their symmetry axes may be substantially equal. In this
configuration, the sound waves originating from the driver 10 are directed inwardly towards the
center of the support structure.
[0043]
FIG. 6 shows a cross-sectional view of the speaker system 200 shown in FIG. As shown in FIG. 6,
the driver 10 may be disposed on the support mechanism 230 such that the axis 214 of each
driver 10 converges forward with respect to one point of the space 220. In this embodiment, the
drivers are equally spaced from the convergence point 220. Although all the drivers preferably
share an origin and one converging axis point, the driver distances to this point do not have to be
identical, ie different drivers differ from the convergence point It may be arranged at a distance.
As a result, the arrangement of the driver is flexible to form a flat, cylindrical, square, spiral or
spherical shape. For example, in one embodiment, a configuration may be provided in which the
drivers are arranged in an oval or a protrusive shape. In this embodiment, each driver is placed at
a different angle relative to the other while ensuring forward convergence of the axis 214 of each
driver, which converges to a single point 220.
[0044]
Returning to FIG. 6, the drivers 10 are arranged such that the symmetry axis 214 of each driver
10 converges to a single point 220 in space. In some embodiments, the drivers may be located
substantially equidistant from the single point 220. In such an arrangement, the general lines
through which the sound waves generated from the driver 10 propagate are concentrated at a
common point 220. From the common point 220, the sound wave continues to propagate
through the gap formed between the drivers 10. In this way, the sound waves are equally
distributed to the outer area inside the support mechanism 230 and there is no bias in the
listening space. By providing such a configuration, the driver enhances the low frequencies that
can reach the listener, regardless of whether the driver sets a standard for the listener.
[0045]
The loudspeaker system configured as described above consists of one without a midrange driver
and one without a woofer driver. Furthermore, the loudspeaker system configured as described
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above consists of one without a box and / or enclosure commonly employed in conventional
loudspeakers. Since a typical speaker driver is mounted in a closed box, such an arrangement
effectively becomes a "drum" that imparts its characteristic resonance to the sound material.
Although the driver 10 is assembled to some type of support mechanism 230, the structure 230
is the smallest to support the driver and does not alter or affect the sound quality of the speaker
system. In one embodiment, the support mechanism 230 is comprised of a wire frame. The wire
frame supports the driver without any coloration of the sounds generated by the speaker system.
It will be appreciated that other support mechanisms constructed of various known materials
may be employed to position the driver based on the teachings of the present disclosure. For
example, the support mechanism may be configured as a tree-like structure, a honeycomb
structure with a hollow core, or the like. In a loudspeaker system according to the principles of
the present disclosure, the effect of box and enclosure resonances on timbre is thus completely
eliminated.
[0046]
In addition, an inert muffler or baffle ball 221 may be placed inside the support mechanism to
reduce resonance. Preferably, the ball 221 is made of a material inert to sound frequencies, such
as gypsum, styrene foam, cement or any other material that does not resonate to any sound
frequency.
[0047]
Numerous advantages can be achieved by employing the principles of the present disclosure.
1. The loudspeaker system of the present invention can be configured in the form of a ball, a
column, a pyramid, a thin panel, an oval or the like. 2. The speaker system has no restriction
on the place. For example, as shown in FIG. 4, the speaker system is configured as a threedimensional spherical object that emits sound waves in all directions in the space, equally in any
direction, and is thus called omnidirectional Ru. There is no restriction on the relative
relationship of the listener to the loudspeaker system, and vice versa. 3. The speaker system
can also be heard regardless of the relative position of the listener, whether it is sitting, standing
or moving. 4. The speaker system is not affected by the woofer or the tone of the box. 5.
The speaker system is compact and requires a small installation space, so it is ideal for
installation in a narrow space like a car. In a further example, the speaker system shown in FIG. 4
can be installed on a cradle. The platform can be a relatively small installation space, and the
platform of the platform is provided with a system installation space.
03-05-2019
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[0048]
The ideal speaker system is a three-dimensional driver assembly, but in some embodiments, as
illustrated in FIG. 7, the back half of the assembly may be removed leaving only the front half. .
FIG. 7 shows a hemispheric configuration 250. The result is that the sound quality, especially the
low frequency part, ie the bass sound, is a compromise. This is because the bass sound
contributed by the rear half of the accumulation is no longer available. In the listening area
where the front half of the cluster faces, the high frequency portion of the sound will be
relatively too strong as the low frequency intensity is reduced. To correct this, an inactive muffler
ball 221 is placed at the front of several drivers 10 to reduce the strength of the high frequency
part of the sound. This is because the high frequency part of the sound is reflected to the rear
side. Preferably, the ball 221 is made of a material that is inert to sound frequencies, such as
gypsum, styrene foam, cement, or any other material that does not resonate with any sound
frequencies.
[0049]
According to some embodiments, the general shape of the driver 10 viewed from the front is
circular or oval. It should be appreciated that by configuring the drivers 10 in a circular or oval
configuration around a three dimensional interior, gaps will be formed between the drivers 10 no
matter how close the drivers 10 are. Many of the sound waves that are directed towards the
interior can thus be emitted to the space outside the placement of the driver 10 through the gap.
Thus, by having the listening area be outside the loudspeaker system, the audio signal appears to
originate from a single origin, which is at or near the center point 220.
[0050]
The driver 10 shares a single point of origin and convergence to the axis of symmetry according
to the embodiment of FIG. 6, but the distance of the driver 10 to the point 220 need not be
identical. That is, the various drivers 10 may be disposed at different distances from the
convergence point 220. As a result, the driver arrangement can be flexible in some embodiments,
such as planar, cylindrical, cubic, spiral, spherical, etc. For example, the driver 10 may be
arranged in an oval or a protrusion. In such embodiments, each driver is placed at a different
angle relative to the other while ensuring that the symmetry axis of each driver intersects the
common point. In some embodiments, the axis of symmetry 214 intersects a relatively small
03-05-2019
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volume, elongated portion, or line segment at or near a point 220 located at the center of the
driver 10 and support arrangement configuration. It is also good.
[0051]
The speaker systems 200 and 250 of FIGS. 4 and 7 may be configured to include only the
tweeter and not include the midrange driver or the woofer driver. Furthermore, speaker systems
200 and 250 may generally be configured without the box or enclosure employed in
conventional speaker systems. Conventional speaker drivers, as described above, are generally
mounted on the surface of a closed box having a diaphragm facing outwards to project sound
waves in a straight line. For this reason, the conventional speaker box gives the sound wave a
characteristic resonance that considerably changes the sound quality. According to various
embodiments of the present disclosure, the driver 10 is mounted on a support structure that has
little, if any, impact on the sound quality of the speaker systems 200, 250. The support
mechanism may include a minimal amount of material so as to reduce or even eliminate the
effect of the box or enclosure resonance on timbre when supporting the driver 10.
[0052]
In one embodiment, the support structure may be comprised of a wire frame. The wire frame will
support the driver without any effect or impact on the sound produced by the speaker system. It
will be appreciated that other support mechanisms constructed of various known materials may
be employed to position the driver based on the teachings of the present disclosure. For example,
the support mechanism may be configured as a tree-like structure, a honeycomb structure with a
hollow core, or the like.
[0053]
In another embodiment, in order to extend the bass performance of the loudspeaker system, the
loudspeaker system will employ a woofer driver in which a spherical woofer driver is
concentrically arranged around a spherical driver. Referring to FIG. 8, there is illustrated a threedimensional view of a loudspeaker system 300 according to an embodiment of the present
disclosure. In this embodiment, the driver assembly is configured inwards and in a spherical
structure and is also directed inward and known to generate bass frequencies, typically from 40
to 1 KHz or higher. It is supplemented by a woofer driver configured as. Each spherical cluster
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may be individually powered, and speaker system 300 may operate as a two-way speaker system.
[0054]
In FIG. 8, the tweeter ball includes a plurality of drivers 10 and is shown as a dashed line within
the outer sphere of the plurality of woofers 302 surrounding the inner driver sphere. The inner
tweeter ball and the outer woofer ball are concentric and share a common end point in space. It
should be appreciated that the woofer driver 302 can be arranged in various configurations
relative to the inner driver 10. For example, in one embodiment, the woofer driver 302 may be
disposed directly behind the tweeter driver 10 to deflect the emitted sound waves. In another
embodiment, each woofer driver 302 may be arranged such that the axis of symmetry passes
through the gap of the tweeter driver 10 and through the center.
[0055]
The various features illustrated and described above are substitutable, and the features
illustrated in one embodiment may be included in another embodiment.
[0056]
Although the present disclosure has been described with reference to the specifically illustrated
embodiments, it should be understood that these embodiments are merely illustrative of the
principles and applications of the present disclosure.
Accordingly, numerous variations may be made to the illustrated embodiments without departing
from the spirit and scope of the present disclosure as defined by the appended claims, and other
configurations may be devised. It is.
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