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JPH08214234

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Notice
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 JPH08214234
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
speaker system of a television set, and more particularly to a speaker system of a television set
for reproducing stereophonic sound with excellent stereoscopic effect.
[0002]
2. Description of the Related Art In recent years, most of the sound systems of television sets are
stereo systems, and it is possible to enjoy good sound quality of separation on the left and right.
[0003]
However, in general, the placement location of the speaker in the television set takes a lot of
space for the installation space of the cathode ray tube, and therefore the placement place of the
speakers is disposed on both sides of the cathode ray tube screen or both sides of the upper or
lower side. There are many things.
[0004]
Therefore, the distance between the left and right speakers can not be taken due to the short
width of the television set and the installation space of the above-mentioned speakers, and the
left and right stereo separation (left and right separation characteristics) is significantly
deteriorated. The feeling of movement, the feeling of widening, and the left and right separation
performance were poor as compared with stereo sound systems and the like.
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1
[0005]
Also, in order to improve the separation performance on the left and right sides, there has been a
television set in which left and right speakers 3 and 4 are disposed on the left and right side
portions of the cabinet 2 of the television set 1 as shown in FIG.
In FIG. 8, (a) is a perspective view and (b) is a front view thereof, and a net portion for sound
radiation is disposed in front of the left and right speakers 3 and 4.
[0006]
With the television set shown in FIG. 8, the sense of right and left spread is improved, but when
the user listens to the sound in front of the television set, the sound quality is unclear because
the direct sound can not be heard.
Also, when you hear the sound from the front, you can hear only the left side of the person who
listens on the left side and only the right side of the person who listens on the right side. There is
a problem that the audio signal can not be heard as reproduction sound of different stereo sound.
[0007]
However, as television sets have become larger and wider, various improvement methods have
been embodied and commercialized to solve these problems.
[0008]
FIG. 9 shows another conventional television set speaker system.
This system is described in Japanese Patent Application No. 5-70169, which the present
applicant applied for a patent on March 29, 1993.
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2
[0009]
In FIG. 9, front speaker units 5 and 6 for emitting sound in the front direction of the television
set 1 are disposed on the front and right sides, and the upper surface portion of the television set
1 is obliquely on the front of the television set Compared with the one in which only the front
speaker units 5 and 6 are provided, the reflective directional emphasis speakers 7 and 8
including the directional reflection members 7a and 8a for emitting sound are disposed. Sound
quality and performance can be greatly improved.
[0010]
However, in the case of the system of FIG. 9, in order to radiate the sound diagonally forward of
the television set 1, the sound radiation opening portions of the reflection type directionality
emphasis speakers 7 and 8 disposed on the left and right of the upper surface portion The design
needs to be designed to be located above the upper end of the front cabinet, which restricts the
design or makes it difficult to install a product such as a VTR on the upper surface of the
television set.
[0011]
As described above, in the conventional system, the stereo sound is difficult to hear as the
reproduced sound depending on the listening position, or the system is excellent in both the
sound quality and the performance, but it can not be said that it is preferable in appearance
There was a problem that.
[0012]
Therefore, in view of the above problems, it is an object of the present invention to provide a
speaker system of a television set which is excellent in stereo separation and can reproduce
sound with a three-dimensional effect.
[0013]
A speaker system of a television set according to the present invention comprises a first speaker
disposed inside the television set and a front surface of a diaphragm of the first speaker. An
acoustic waveguide for guiding and emitting the sound emitted to a part in the front direction of
the television set, and a front and back position of the sound emission position on the side
surface of the television set with respect to the sound emission position of the first speaker And
second reflectors disposed at different positions up and down and having a substantially conical
shape for radiating and diffusing sound on the front of the side, and emitting a sound to the front
of the television set It is characterized by having.
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3
[0014]
The speaker system of the television set according to the invention of claim 2 is provided on a
front surface of the television set, and has a first speaker for emitting sound in the front
direction, and a sound emission position on the side surface of the television set. The television
set further includes a reflecting member having a substantially conical shape for radiating and
diffusing sound on the front of the side surface provided at different positions in front, rear, up
and down with respect to the sound emission position of the first speaker, And a second speaker
that emits a sound forward.
[0015]
According to a third aspect of the present invention, there is provided a speaker system of a
television set, comprising: a first speaker disposed inside the television set; and a sound emitted
from a front portion of a diaphragm of the first speaker. An acoustic waveguide for guiding and
emitting in the front direction of a Johnset, and provided on the side of the television set, for
emitting a sound to the front of the television set in front of one side of the diaphragm. And a
second speaker that radiates the radiation sound from the one side of the diaphragm to which
the reflection member is not opposed as it is to the side surface of the television set.
[0016]
The speaker system of the television set according to the invention according to claim 4 is
provided on a front surface of the television set, and is provided on a first speaker emitting sound
in the front direction, and provided on a side surface of the television set. The television set is
provided with a reflection member for emitting sound toward the front of the television set while
facing the front of the one side portion, while the radiation sound from the one side portion of
the diaphragm not facing the reflection member is as it is. And a second speaker that radiates to
the side surface.
[0017]
According to a fifth aspect of the present invention, there is provided a speaker system of a
television set comprising: a first speaker disposed inside the television set; and a sound emitted
from a front surface portion of a diaphragm of the first speaker. An acoustic waveguide for
guiding and emitting in the front direction of the Johnset, and a side of the television set, wherein
the sound radiation position is different from the sound radiation position of the first speaker at
different positions And a reflective member for emitting sound toward the front of the television
set in front of one side of the diaphragm while the radiation from the one side of the diaphragm
where the reflective member is not opposed remains as it is. The television set is characterized by
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4
comprising a second speaker radiating to the side surface of the television set.
[0018]
The speaker system of the television set according to the invention of claim 6 is provided on a
front surface of the television set, and has a first speaker for emitting sound in the front
direction, and a sound emission position on the side of the television set. A reflection member is
provided at different positions before and behind and up and down with respect to the sound
emission position of the first speaker, and has a reflection member for emitting a sound to the
front of the television set relative to the front of one side of the diaphragm. On the other hand, it
is characterized by comprising a second speaker that radiates the radiation sound from the one
side of the diaphragm not opposite to the reflection member to the side surface of the television
set as it is.
[0019]
The speaker system of the television set according to the invention according to claim 7
comprises a first left speaker disposed inside the television set, and a second right speaker
disposed inside the television set. A first acoustic waveguide for guiding a sound emitted to a
front portion of a diaphragm of the first left speaker in the front direction of the television set
and emitting the same, and a diaphragm of the second right speaker A second acoustic
waveguide for guiding and emitting the sound emitted to the front portion in the front direction
of the television set, and the sound of the first left speaker on the left side surface of the
television set and having a sound emission position The front surface of the left side surface is
provided with a reflecting member having a substantially conical shape for radiating and
diffusing sound, and the sound is provided in front of the television set. The second to radiate
The left speaker and the right side of the television set are disposed at different positions in
front, rear, up and down with respect to the sound emission position of the second right speaker,
and the front surface of the right side is The television set is characterized by comprising a
reflecting member having a substantially conical shape for radiating and diffusing sound, and a
fourth right speaker for emitting sound in front of the television set.
[0020]
The speaker system of the television set according to the invention of claim 8 is provided on the
front of the television set, and is provided on the front of the television set, and is provided on
the front of the television set. A second right speaker for emitting sound, and a left side surface
of the television set, the sound emitting position being different from the sound emitting position
of the first left speaker back and forth and up and down, A third speaker for the left for emitting
sound in front of the television set, and a right side surface of the television set; A sound emitting
position is provided at different positions in front, rear, up and down with respect to the sound
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emitting position of the second right speaker, and a substantially conical shape for radiating and
diffusing sound on the front surface of the right side surface A reflective member having a,
characterized by comprising a fourth right speaker that emits a sound in front of the television
set.
[0021]
The speaker system of the television set according to the invention according to claim 9
comprises a first left speaker disposed inside the television set, and a second right speaker
disposed inside the television set. A first acoustic waveguide for guiding a sound emitted to a
front portion of a diaphragm of the first left speaker in the front direction of the television set
and emitting the same, and a diaphragm of the second right speaker A second acoustic
waveguide for guiding and emitting the sound emitted to the front part in the front direction of
the television set, and provided on the left side of the television set and facing the front of one
side of the diaphragm A reflection member for emitting a lingering sound to the front of the
television set, while radiating a radiation sound from one side of the diaphragm not opposite to
the reflection member as it is to the left side surface of the television set A speaker for the left of
the television set, and a reflecting member provided on the right side surface of the television set
and for emitting a sound to the front of the television set, facing the front of one side of the
diaphragm; A fourth right speaker is provided, which radiates the radiation sound from the one
side portion of the diaphragm not opposite to the right side surface of the television set as it is.
[0022]
The speaker system of the television set according to the invention of claim 10 is provided at the
front of the television set, and is provided at the front of the television set with a first left speaker
emitting sound in the front direction, in the front direction A second right speaker for emitting
sound; and a reflecting member provided on the left side of the television set for emitting sound
to the front of the television set in front of one side of the diaphragm. Provided on the right side
of the television set and the third speaker for the left which radiates the radiation sound from
one side of the diaphragm not opposite to the reflecting member as it is to the left side of the
television set; A reflective member for emitting a sound to the front of the television set in front
of the one side of the display, while the diaphragm does not face the reflective member
Characterized by comprising a fourth right speaker that emits a sound radiated from one side
portion directly to the television set right side.
[0023]
The speaker system of the television set according to the invention of claim 11 comprises a first
left speaker disposed inside the television set, and a second right speaker disposed inside the
television set. A first acoustic waveguide for guiding a sound emitted to a front portion of a
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diaphragm of the first left speaker in the front direction of the television set and emitting the
same, and a diaphragm of the second right speaker A second acoustic waveguide for guiding and
emitting the sound emitted to the front portion in the front direction of the television set, and the
sound of the first left speaker on the left side surface of the television set and having a sound
emission position A reflective member is provided at different positions in front, rear, top and
bottom with respect to the radiation position, and includes a reflective member for radiating
sound to the front of the television set relative to the front of one side of the diaphragm. phase A
third speaker for the left which radiates the radiation sound from one side of the diaphragm not
directly to the left side of the television set as it is, and the second speaker for the right side at
the right side of the television set A reflection member provided at different positions forward
and backward and up and down with respect to the sound emission position of the light source,
for emitting sound to the front of the television set relative to the front of one side of the
diaphragm; A fourth right speaker is provided, which radiates as it is the radiation sound from
one side of the diaphragm where the members do not face to the right side of the television set.
[0024]
The speaker system of the television set according to the invention of claim 12 is provided in the
front of the television set, and is provided in the front of the television set with the first left
speaker emitting sound in the front direction, in the front direction A second right speaker for
emitting sound, and a left side surface of the television set, the sound emitting position being
different from the sound emitting position of the first left speaker in the front and back and up
and down, vibration The television includes a reflection member for emitting sound toward the
front of the television set in front of the one side of the plate, while the radiation sound from the
one side of the diaphragm not facing the reflection member is directly transmitted to the
television A third left speaker emitting to the left side of the Johnset, and a sound emitting
position on the right side of the television set relative to a sound emitting position of the second
right speaker A vibration member provided at different positions in the front and back and up
and down directions and having a reflection member for radiating a sound to the front of the
television set facing the front of one side of the diaphragm while the reflection member is not
opposite And a fourth right speaker for radiating the radiation sound from one side of the plate
directly to the right side of the television set.
[0025]
According to the first and second aspects of the present invention, the first speaker used to
radiate the sound in the front direction and the second loudspeaker emitting the sound in the
side direction orthogonal to the sound radiation direction The second speaker is disposed at
different positions before and after and up and down with respect to the sound radiation position
of the first speaker, so for example, the same audio signal is transmitted to the first speaker and
the second speaker. When input and viewed on the front side of the television set, two sounds
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7
with a time lag from each other enter the user's ear and can hear television sound with a sense of
depth.
[0026]
According to the third and fourth aspects of the invention, a first speaker used to emit sound in
the front direction and a second speaker emitting sound in the side direction orthogonal to the
sound radiation direction are used. A reflection member is provided opposite to one side of the
diaphragm of the second speaker to radiate sound in the front direction, and the sound from the
other side of the diaphragm of the second speaker is as it is in the side direction When the same
audio signal is input to the first speaker and the second speaker and viewed on the front side of
the television set, three audios having time lag with each other enter the user's ear, and the sense
of spread is I can listen to a certain television sound.
[0027]
According to the fifth and sixth aspects of the present invention, a first speaker used to emit
sound in the front direction and a second speaker emitting sound in the side direction orthogonal
to the sound radiation direction are used. And the second speaker is disposed at different
positions back and forth and up and down with respect to the sound radiation position of the
first speaker, and the reflecting member is opposed to one side of the diaphragm of the second
speaker. Since the sound is emitted in the front direction and the sound from the other side of
the diaphragm of the second speaker is emitted in the side direction as it is, for example, the
same audio signal is transmitted to the first speaker and the second speaker. When input and
viewed on the front side of the television set, three sounds with a time lag from each other enter
the user's ear and can hear television sound with a sense of expanse as well as a sense of depth.
[0028]
According to the invention as set forth in claims 7 and 8, the left and right first and second
speakers used to emit sound in the front direction, and two side directions orthogonal to the
sound radiation direction The third and fourth speakers for the left and right to emit sound, and
the third and fourth speakers have different positions in front, rear, up and down with respect to
the sound radiation position of the first and second speakers For example, the same left audio
signal is input to the first speaker and the third speaker, the same right audio signal is input to
the second speaker and the fourth speaker, and the front side of the television set is provided.
When viewed, for each of the left and right channels, two sounds with superior time separation
performance, which are excellent in separation performance, enter the user's ear and can listen
to three-dimensional and depth television sound.
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8
[0029]
According to the invention of claims 9 and 10, the left and right first and second speakers used
to radiate the sound in the front direction, and the sound in the side direction orthogonal to the
sound radiation direction Third and fourth speakers for emitting left and right, and a reflecting
member is provided facing one side of the diaphragm of the third and fourth speakers to radiate
sound in the front direction; The sound from the other side of the diaphragm of the third and
fourth loudspeakers radiates to the side direction as it is, so for example, the same left audio
signal is input to the first loudspeaker and the third loudspeaker, and the second loudspeaker
When the same right audio signal is input to the speaker and the fourth speaker and viewed on
the front side of the television set, three audios with superior time separation performance with
respect to each other for the left and right channels are the user's ear Enter and have a broad
sense of television It is possible to listen to the voice.
[0030]
According to the present invention, the first and second speakers used to radiate the sound in the
front direction and the third speaker which radiates the sound in the side direction orthogonal to
the sound radiation direction , And the third and fourth speakers are disposed at different
positions in the front and back and up and down with respect to the sound radiation positions of
the first and second speakers, and the third and fourth speakers are further provided. A
reflection member is provided opposite to one side of the diaphragm of the speaker to radiate
sound in the front direction, and the sound from the other side of the diaphragm of the third and
fourth speakers is emitted as it is to the side Therefore, for example, when the same left audio
signal is input to the first speaker and the third speaker, and the same right audio signal is input
to the second speaker and the fourth speaker and viewed on the front side of the television set
Separation performance for each channel, left and right Excellent, three of voice with each other
the time difference goes into the ear of the user, it is possible to listen to the TV sound with a
sense of spread in addition to the sense of depth.
[0031]
In the first, third, and fifth inventions, the first speaker is provided with an acoustic waveguide,
but this is because there is a space for disposing the first speaker inside the television set. It is
useful in the case where the appearance of the television set is compact or small.
Similarly, in the seventh, ninth and eleventh inventions, the first and second speakers are
respectively provided with acoustic waveguides, but the first and second speakers are disposed
inside the television set. This is useful when there is little space for installation or when designing
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9
the appearance of a television set in a compact manner.
[0032]
Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing a speaker system of a television set according to an
embodiment of the present invention, and FIG. 2 is a perspective view showing a configuration in
which the speaker system of FIG. 1 is modeled.
However, in FIG. 2, in order to make the arrangement relationship between the external cabinet
22 and the speaker 20 easy to understand, the speaker 20 is separated from the external cabinet
22.
[0033]
In FIG. 1, reference numeral 11 denotes a television set. A cathode ray tube 13 constituting a
display is disposed inside a cabinet 12 of the television set, and left and right front speakers are
provided at left and right positions on both sides thereof. 14, 15 are provided.
The acoustic waveguides 16 and 17 are attached to the front portions of the left and right front
speakers 14 and 15, respectively, and the sound emission ports 16a and 17a of the left and right
acoustic waveguides 16 and 17 are the front of the cabinet 12. It is arranged in the panel (front
frame).
The sound emission ports 16a and 17a are respectively connected to sound emission holes
provided at left and right positions of the front panel.
Therefore, the left and right sounds from the diaphragms of the left and right front speakers 14
and 15 are guided forward by the left and right acoustic waveguides 16 and 17 to pass through
the sound emission ports 16a and 17a, and then to television. It radiates in the front direction of
the set 11.
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10
[0034]
At the rear of each of the left and right front speakers 14 and 15, the sound produced from the
rear of the diaphragm of each speaker is produced from the rear 12A of the cabinet 12 to the
outside, and the sound is produced at the front of the television set Rear cabinets 18 and 19 are
attached to shield the sound emitted from the rear of the speaker diaphragm in order to prevent
it from mixing up with the sound and giving an unclear sound to the user.
[0035]
Furthermore, in the present embodiment, the left and right side speakers 20 and 21 (see FIG. 2)
are directed to the left and right sides of the rear portion 12A of the cabinet 12 of the television
set 11 with the diaphragm surface facing each side. It is arranged.
A substantially semi-conical reflecting member 24, 25 is disposed facing the front of a portion
(hereinafter referred to as one side of the diaphragm) corresponding to a half of each diaphragm
of the left and right side speakers 20, 21. External cabinets 22 and 23 for holding the reflecting
members 24 and 25 on the inner surface are attached to the left and right outer side surfaces of
the rear portion 12A of the cabinet 12.
The external cabinets 22 and 23 have a substantially box shape, and include sound emission
ports 22a and 23a for emitting sound in the front direction of the television set 11, and one side
of each diaphragm of each of the side speakers 20 and 21. While the above-mentioned reflecting
members 24 and 25 for radiating sound to the front of the television set 11 facing the front of
the unit while the reflecting members 24 and 25 are not facing each other Radiation holes 22b
and 23b are provided to radiate the radiation sound from the one side part to the outside of the
left side and the right side of the television set 11 as it is.
[0036]
The left and right side speakers 20, 21 are disposed on both sides of the television set as shown
in FIG. 2, but their respective sound radiation positions (i.e., positions in front of the diaphragm)
are the left and right front speakers 14 respectively. , And 15 are disposed at different positions
in front, rear, top and bottom, as viewed from the front of the television set.
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11
[0037]
In the speaker system configured as described above, for example, the front speaker 14 and the
side speaker 20 are electrically connected so that the audio signal of the left channel is
simultaneously supplied to the front speaker 14 for the left and the side speaker 20 for the left.
The front speaker 14 and the side speaker 21 are electrically connected in parallel so that the
audio signal of the right channel is connected in parallel and simultaneously supplied to the front
speaker 14 for the right and the side speaker 21 for the right.
[0038]
Accordingly, since the left and right side speakers 20 and 21 are provided in addition to the left
and right front speakers 14 and 15, the left and right sound radiating portions are apparently
expanded laterally, so that the excellent separation performance of the left and right is exhibited.
be able to.
Furthermore, the arrangement positional relationship between the left front speaker 14 and the
left side speaker 20 and the arrangement positional relationship between the right front speaker
15 and the right side speaker 21 differ from front to back and up and down when viewed from
the front of the television set 11 Therefore, when the user listens to the sound on the front side
of the television set 11, the same left sound is different between the left channel audio from the
left front speaker 14 and the left channel audio from the left side speaker 20. The same right
sound is emitted from a different position and enters the ear between the right channel sound
from the right front speaker 15 and the right channel sound from the right side speaker 21
similarly.
For this reason, for each of the left and right ones, the same sound having a temporal deviation is
simultaneously put into the ear, which makes it possible to give the sound a sense of depth and a
sense of movement.
Thus, in the television set of this embodiment, a time difference (that is, a phase difference) is
generated for the same sound emitted from the front and rear speakers (front speaker and side
speaker), which causes the thickness of the sound on the user's ear. Sound, which produces a
sense of depth and a sense of movement in the front-rear direction.
[0039]
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12
Furthermore, in the present embodiment, in addition to the sound A from the front speakers 14
and 15, the sound B of the television set 11 of each of the side speakers 20 and 21 is opposed to
the front of one side of the speaker diaphragm. Sound emission hole 22b for the radiation sound
C from the other side of the speaker diaphragm which is provided with the substantially semicone-shaped reflection members 24 and 25 for emitting forward, while the reflection members
24 and 25 do not face each other , 23b directly radiates to the outside of the television set side,
so that the same signal is radiated from the three sound radiating parts for the left and right, and
the separation performance of the left and right sounds can be improved, and the sense of depth
to the sound, In addition to the sense of movement, a sense of spread can be produced.
The radiation sound C emitted from both sides of the television set 11 is reflected on the wall
surface in the room to be reflected on the user's ear to produce a three-dimensional effect as well
as a sense of spreading.
[0040]
FIG. 3A shows an example of the configuration of the external cabinet 22. As shown in FIG.
The other external cabinet 23 has the same shape.
The external cabinet 22 shown in FIG. 3 (a) is formed so that the area of the portion of the sound
emission port 22a is large, and the area of the sound shield 22c on the opposite side is small. In
the inner surface position of the external cabinet where one side of the diaphragm of 2) is to
face, a reflecting means 24 of a substantially semi-conical shape as shown in FIG. 3 (b) is adhered
(adhesive or locking screw etc.) To the outside surface of the external cabinet where the other
side of the diaphragm of the side speaker 20 (see FIG. 2) is to face, a large number of sound
emission holes 22b are penetrated to the outside. It is open to you.
When the outer cabinet 22 of FIG. 3A is molded with a synthetic resin or the like, it is of course
possible to integrally form the substantially semi-conical reflecting member 24 simultaneously
with the outer cabinet 22 by molding.
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13
[0041]
FIG. 4 is a perspective view showing a speaker system of a television set according to another
embodiment of the present invention, and FIG. 5 is a perspective view showing a configuration in
which the speaker system of FIG. 4 is modeled.
However, also in FIG. 5, the arrangement relationship between the external cabinet 31 and the
speaker 20 is shown in a state in which the speaker 20 is separated from the external cabinet 31.
[0042]
4 and FIG. 5, the point different from FIG. 1 is that the sound radiation holes are not formed in
the external cabinets 31 and 32, and side speakers 20 respectively corresponding to the
respective inner surfaces of the external cabinets 31 and 32. The substantially conical reflecting
members 33 and 34 are provided to face the whole of the respective diaphragms 21 and 21.
[0043]
In FIG. 4, a Braun tube 13 is disposed inside a cabinet 12, and left and right front speakers 14
and 15 provided with acoustic waveguides 16 and 17 at left and right positions on both sides
thereof (see FIG. 5). Is provided.
The sound emission ports 16 a and 17 a of the left and right acoustic waveguides 16 and 17 are
disposed on the front panel (front frame) of the cabinet 12.
The sound emission ports 16a and 17a are respectively connected to sound emission holes
provided at left and right positions of the front panel.
Rear cabinets 18 and 19 (see FIG. 5) are attached to the rear of the left and right front speakers
14 and 15, respectively.
[0044]
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14
Furthermore, in the present embodiment, the left and right side speakers 20 and 21 (see FIG. 5)
are directed to the left and right sides of the rear portion 12A of the cabinet 12 of the television
set 11 with the diaphragm surface facing each side. It is arranged.
A substantially conical reflecting member 33, 34 is disposed facing the front of each diaphragm
of the left and right side speakers 20, 21 and an external cabinet 31 for holding the reflecting
member 33, 34 on the inner surface. , 32 are attached to the left and right outer surfaces of the
rear 12A of the cabinet 12.
The external cabinets 31 and 32 have a substantially box shape, and include sound emission
ports 31 a and 32 a for emitting sound in the front direction of the television set 11.
[0045]
FIG. 6 is a longitudinal sectional view taken along line x-x of FIG.
The side speaker 21 is attached to an opening provided in the rear cabinet 12A, and the outer
cabinet 32 is fixed on the rear cabinet 12A such that the reflecting member 34 comes to a
position facing the diaphragm of the side speaker 21.
[0046]
The left and right side speakers 20, 21 are disposed on both sides of the television set cabinet 12
as shown in FIG. 5, but their respective sound radiation positions (i.e., positions in front of the
diaphragm) are the left and right The respective sound emission positions of the front speakers
14 and 15 (i.e., the positions in front of the diaphragm) are disposed at different positions in the
front, rear, upper and lower directions as viewed from the front of the television set.
[0047]
In the speaker system configured as described above, for example, the left channel audio signal is
electrically wired so as to be simultaneously supplied to the left front speaker 14 and the left side
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15
speaker 20, and the right channel audio signal is for the right Electrical wiring is performed so as
to be simultaneously supplied to the front speaker 14 and the side speaker 21 for the right.
Accordingly, since the left and right side speakers 20 and 21 are provided in addition to the left
and right front speakers 14 and 15, it is possible to exert an effect excellent in the separation
performance of the left and right sound.
Further, the arrangement positional relationship between the left front speaker 14 and the left
side speaker 20 and the arrangement positional relationship between the right front speaker 15
and the right side speaker 21 are as viewed from the front of the television set 11 in the front
and rear direction and the vertical direction. The same left sound differs between the left channel
audio from the left front speaker 14 and the left channel audio from the left side speaker 20
when the user listens to the sound on the front side of the television set 11. The same right
sound is emitted from a different position and enters the ear between the right channel sound
from the right front speaker 15 and the right channel sound from the right side speaker 21 as
well. .
For this reason, for each of the left and right ones, the same sound having a temporal deviation is
simultaneously put into the ear, which makes it possible to give the sound a sense of depth and a
sense of movement.
Thus, in the television set of this embodiment, a time difference (that is, a phase difference) is
generated for the same sound emitted from the front and rear speakers (front speaker and side
speaker), which causes the thickness of the sound on the user's ear. Sound, which produces a
sense of depth and a sense of movement in the front-rear direction.
[0048]
In this embodiment, in addition to the sound A from the front speakers 14 and 15, the sound B
from the side speakers 20 and 21 which are at different positions from the front speakers 14 and
15 in the front-rear direction (and the vertical direction) is superimposed. Can be heard.
However, in the present embodiment, unlike the embodiments of FIG. 1 and FIG. 2, there is no
sound radiated from the side speakers 20 and 21 to the left and right side directions of the
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television set 11, and , 35, the sound pressure level radiated in the front direction of the
television set 11 becomes large.
Therefore, the time-shifted sound due to the same signal from the side speakers 20 and 21 is
added to the sound in the front direction from the front speakers 14 and 15, and it is larger than
the case of the embodiment of FIGS. It is possible to output a sound which is added at the sound
pressure level and in which the depth feeling in the front-rear direction is emphasized.
[0049]
FIG. 7 is a perspective view showing a speaker system of a television set according to another
embodiment of the present invention.
[0050]
The embodiment of FIG. 7 is different from the embodiments of FIGS. 4 and 5 in that the
vibration of the front speakers 14 and 15 is eliminated without attaching the acoustic
waveguides 16 and 17 to the front surface of the diaphragms of the front speakers 14 and 15.
The face of the board is directly attached to the opening portion opened in the front panel of the
television set 11.
In this case, the rear cabinets 18 and 19 of the front speakers 14 and 15 may be attached, but in
this example, the rear cabinets 18 and 19 are removed. The other configuration is the same as
the embodiment of FIGS. 4 and 5.
[0051]
According to the embodiment of FIG. 7, as compared with the embodiments of FIGS. 4 and 5,
since there is no acoustic waveguide on the front surface of the diaphragm of the front speakers
14 and 15, the television set front by these front speakers 14 and 15 is front The sound pressure
level in the direction can be raised. Further, compared to the embodiment of FIGS. 1 and 2, the
sound pressure level in the front direction of the television set by the front speakers 14 and 15
can be increased, while the sound from the side speakers 20 and 21 has a substantially conical
shape. By reflecting the light by the members 34 and 35, the sound pressure level in the front
direction of the television set can be raised, and the thickness and depth of sound can be
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improved as in the other embodiments.
[0052]
In the embodiment described above, the left front speaker 14 and the side speaker 20 are
connected in parallel, and the left channel signal from the same left amplifier is supplied to both
the speakers 14 and 20, and the right front speaker 15 and the side speaker Although the case
where the right channel signal from the same right amplifier is supplied to both speakers 15 and
21 is connected in parallel to 21 described above, the front speakers 14 and the side speakers 20
are driven by separate amplifiers, Of course, the respective speakers of the front speaker 15 and
the side speaker 21 may be driven by separate amplifiers, and the outputs of the respective
amplifiers may be adjusted. In this way, the sound pressure level of each speaker can be
individually changed and viewed.
[0053]
In the embodiments shown in FIGS. 1 and 2, although it has been described that the sound is
emitted in the front direction of the television set by the reflecting members disposed in front of
the side speakers 20 and 21, the sound emission ports of the external cabinets 22 and 23 are
described. The sound radiation direction may be set to a direction different from the front
direction, for example, obliquely forward (obliquely outward), by changing the direction of 22a,
23a, or changing the direction or shape of the reflecting members 24, 25. By partially changing
the radiation direction of the sound as described above, it is possible to view the sound whose
balance of the sound pressure levels of the plurality of sounds entering the user's ear is changed.
The same applies to the external cabinets 31 and 32 in the embodiments of FIGS. 4 and 7.
[0054]
As described above, according to the present invention, it is possible to reproduce a threedimensional sound which is excellent in stereo separation and has a sense of depth, a sense of
spread, and a sense of movement.
[0055]
Brief description of the drawings
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18
[0056]
1 is a perspective view showing a speaker system of a television set according to an embodiment
of the present invention.
[0057]
2 is a perspective view modeling the configuration of the speaker system of FIG.
[0058]
3 is a perspective view showing a configuration example of an external cabinet to which a
reflecting member is attached on the inner surface.
[0059]
4 is a perspective view showing a speaker system of a television set according to another
embodiment of the present invention.
[0060]
5 is a perspective view modeling the configuration of the speaker system of FIG.
[0061]
6 is a longitudinal sectional view taken along line x-x of FIG.
[0062]
7 is a perspective view showing a speaker system of a television set according to another
embodiment of the present invention.
[0063]
8 is a perspective view showing the speaker system of the conventional television set.
[0064]
9 is a perspective view showing a speaker system of another conventional television set.
[0065]
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Explanation of sign
[0066]
11 Television set 12 Cabinet 13 Braun tube 14, 15 Front speaker 16, 17 Acoustic waveguide
16a, 17a Sound radiation port 20, 21 Side speaker 22, 23 External cabinet 22a, 23a Sound
radiation Ports 22b, 23b ... Sound radiation holes 24, 25 ... Reflective members 31, 32 of
substantially semi-conical shape ... External cabinets 31a, 32a ... Sound radiation ports 33, 34 ...
Reflective members of substantially conical shape
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