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JPH05122788

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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 JPH05122788
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is applicable
to a stereo reproduction apparatus, a television receiver, etc., and can change the directivity of
sound produced from a speaker unit housed in a speaker cabinet. The present invention relates
to a speaker device.
[0002]
2. Description of the Related Art Conventionally, when installing a speaker device including a
speaker unit in a speaker cabinet used for, for example, a two-channel stereo reproduction
device, two speaker devices are separated to some extent to provide a sense of reality The sound
was made to be pronounced to create a good sound field.
[0003]
By the way, the sound field formed in this way will differ depending on the condition of the room
in which the speaker device is installed, even if the speaker device is installed in the same
manner.
That is, such a sound field is formed by the direct sound directly heard from the speaker device
and the indirect sound reflected and reflected from the wall of the room, etc., but the indirect
sound depends on the room conditions such as the material of the wall. Because the way of
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1
sounding is different, even if the above-mentioned speaker device is installed in the same
manner, a difference occurs in the sound field. For this reason, when installing such a speaker
apparatus, it is necessary to install this speaker apparatus so that the effect which an indirect
sound gives to a sound field may become the best according to the condition of a room.
[0004]
However, it is very difficult to install the speaker device so that the above-mentioned sound field
becomes the best. That is, although it is necessary to perform the installation work of the abovementioned speaker device while listening to the sound uttered from the speaker device at a
listening position (listening point) separated from the speaker device, such work is performed
alone In this case, it was generally impossible to move the speaker device while staying at the
listening point, and it was difficult to work with certainty in checking the sound field.
[0005]
In addition, in order to form a good sound field even when the listening point changes, it is
necessary to change the installation position of the speaker device, but in practice, it takes time
and effort, so the listening point has changed. It has hardly been done to change the installation
position of the speaker device.
[0006]
The present invention has been made in view of the above-described problems, and an object of
the present invention is to provide a speaker device capable of easily setting a sound field having
a sense of presence.
[0007]
A speaker apparatus according to the present invention comprises: vertical moving means for
moving a speaker cabinet containing a speaker unit up and down; rotating means for rotating the
speaker cabinet horizontally; and the vertical moving means And control means for controlling
the rotation means, the control means controlling the vertical movement means and the rotation
means in accordance with the relative position between the listener and the speaker cabinet, the
speaker unit The above problem is solved by changing the directivity of the sound to be
produced.
[0008]
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2
Further, the speaker device according to the present invention is provided with a reflection plate
for reflecting the sound produced from the speaker unit and a reflection plate rotation means for
rotating the reflection plate, instead of the vertical movement means or the rotation means. Solve
the above-mentioned problems on the basis of
[0009]
In the speaker apparatus according to the present invention, the control means comprises
vertical movement means for moving the speaker cabinet up and down, and rotation means for
rotating the speaker cabinet left and right according to the relative position between the listener
and the speaker cabinet. The directivity of the sound emitted from the speaker unit is controlled
to vary.
[0010]
In the speaker apparatus according to the present invention, the reflecting plate rotating means
controls the reflecting plate for reflecting the sound produced from the speaker unit according to
the relative position between the listener and the speaker cabinet, and the speaker unit controls
the reflecting plate. Vary the directivity of the sound to be pronounced.
[0011]
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The preferred embodiments of the
speaker apparatus according to the present invention will be described below with reference to
the drawings.
First, as shown in FIG. 1, for example, the speaker apparatus according to the first embodiment of
the present invention includes a speaker cabinet 1 for medium to high sound provided with the
high sound speaker unit 1a and the medium sound speaker unit 1b, and The bass speaker
cabinet 2 provided with the speaker unit 2a, the up and down movement circuit 10 as the up and
down moving means for moving the middle to high sound speaker cabinet 1 up and down, and
the rotation for rotating the middle to high sound speaker cabinet 1 to the left and right A
rotation circuit 11 as a means, a system controller 4 as control means for controlling the vertical
movement circuit 10 and the rotation circuit 11, and a level of an audio signal supplied to the
middle to high sound speaker cabinet 1 and the low sound speaker cabinet 2 Level change circuit
7 for changing the level of the Are divided into a high band, a mid band and a low band, and the
high band audio signal is supplied to the high sound speaker unit 1a and the mid band audio
signal is supplied to the mid sound speaker unit 1b. And a band division circuit 9 for supplying
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3
the low-range audio signal to the bass speaker unit 2a.
[0012]
Further, in the speaker apparatus of the first embodiment, a remote control unit (remote control)
5 for remotely controlling the vertical movement circuit 10, the rotation circuit 11 and the level
variable circuit 7 and a remote control 5 transmit the signal. And a receiver 6 for receiving a
signal and supplying the signal to the system controller 4.
[0013]
For example, as shown in FIG. 2, the middle to high-pitched speaker cabinet 1 is formed in a
substantially cylindrical shape, and the high-pitched speaker unit 1 a is disposed on the upper
side of the speaker cabinet 1 and the lower side of the loudspeaker cabinet 1. A mid-tone speaker
unit 1b is provided.
A shaft insertion hole 1d having a circular vertical end is provided at the center of such a middle
to high-pitch speaker cabinet 1, and a shaft 19 is inserted into the shaft insertion hole 1d.
[0014]
Further, although the bass speaker cabinet 2 has a substantially cylindrical shape as shown in
FIG. 2, the diameter is larger than that of the middle to high tone speaker cabinet 1, and the bass
speaker cabinet 2 is disposed above the bass speaker cabinet 2. A bass speaker unit 2a is
provided.
The upper surface portion 2c of the bass speaker cabinet 2 is provided with a shaft insertion hole
2b which is a vertical hollow having a circular cut end, and the shaft insertion hole 2b is used to
insert the shaft of the middle to high-tone speaker cabinet 1 described above. The remaining
portion of the shaft 19 inserted into the hole 1d is inserted and fixed.
[0015]
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4
FIG. 3 shows a longitudinal sectional view of the above-mentioned speaker cabinet 1 for middle
and high-pitched sound and the speaker cabinet 2 for low-pitched sound.
In FIG. 3, a linear gear 20 is provided along the shaft 19 at a portion of the shaft 19 inserted in
the shaft insertion hole 1 d of the speaker cabinet 1 for middle and high sound.
The linear gear 20 is rotated by a circular gear 21. The circular gear 21 is rotated by a vertical
movement motor 22 rotationally driven by the vertical movement circuit 10 shown in FIG. .
[0016]
Therefore, when the vertical movement motor 22 is rotationally driven by the vertical movement
circuit 10, the mid-high-tone speaker cabinet 1 moves up and down along the linear gear 21 by
the rotation of the circular gear 21 according to this. It is supposed to be.
[0017]
Further, as shown in FIG. 4, an arc-shaped gear 25 is provided on the back side of the medium
sound speaker unit 1 b provided on the lower side of the above-mentioned middle to high sound
speaker cabinet 1.
The circular arc gear 25 meshes with a circular gear 26 provided on a rotary drive motor 27
rotationally driven by the rotary circuit 11 shown in FIG.
Therefore, when the rotary drive motor 27 rotates, the circular gear 26 rotates accordingly.
Then, the circular arc gear 25 is rotated according to the rotation of the circular gear 26, and the
middle to high-tone speaker cabinet 1 is rotated to the left and right.
[0018]
Next, the operation of the loudspeaker apparatus of the first embodiment having such a
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configuration will be described. First, in FIG. 1, adjustment is performed using the remote control
5 so that the high and medium pitch speaker units 1a and 1b provided in the middle and high
pitch speaker cabinet 1 face the direction of the listener.
[0019]
That is, the remote control 5 includes a right-handed rotation switch for supporting the
rightward rotation of the middle-high-pitched speaker cabinet 1 and a left-handed rotation switch
for supporting the left-handed rotation of the middle-high-pitched speaker cabinet 1. And a left
and right rotation switch. A signal for designating the rotation of the speaker cabinet 1 for
middle to high-pitched sound transmitted from the remote control 5 by turning on the rotation
switch for designating the rotation in each direction is transmitted through the receiver 6 to the
system controller 4. Supplied to
[0020]
When the system controller 4 is supplied with a signal for designating the rotation of the speaker
cabinet 1 for medium and high sound, the system controller 4 supplies a rotation signal to the
rotation circuit 11 according to this signal.
[0021]
The rotation circuit 10 rotationally drives the rotation drive motor 27 shown in FIG. 4 provided
in the speaker cabinet 1 for medium and high sound according to the rotation signal.
When the rotary drive motor 27 is driven to rotate, the rotational power of the rotary drive
motor 27 is transmitted to the arc gear 25 via the circular gear 26, and the middle to high-tone
speaker cabinet 1 is rotated to the right or to the left.
[0022]
Then, the listener turns off the left and right rotation switch when the high and low tone speaker
units 1a and 1b of the middle and high tone speaker cabinet 1 face their own direction. As a
result, the high and low sound speaker units 1a and 1b of the middle and high sound speaker
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cabinet 1 can be oriented in the direction of the listener.
[0023]
Next, the listener uses the remote control 5 to set the height of the middle-to-high-tone speaker
cabinet 1 to the height of his / her ear currently listening to. Turn on the movement switch. The
upward and downward movement switch is provided with a switch in the positive direction and a
switch in the negative direction. When the switch in the positive direction is turned on, the
speaker cabinet 1 for medium and high noise moves upward, and the negative direction is
moved. When the switch of (1) is turned on, the above-mentioned speaker cabinet 1 for middle
and high sound is moved downward.
[0024]
That is, a signal designating the up and down movement of the speaker cabinet 1 for medium
and high sound transmitted from the remote control 5 by turning on the up and down movement
switch is supplied to the system controller 4 through the receiving unit 6. . The system controller
4 supplies a vertical movement signal to the vertical movement circuit 10 in response to the
signal specifying the vertical movement of the speaker cabinet 1 for middle and high sound.
[0025]
The up and down movement circuit 10 rotationally drives the movement motor 22 shown in FIG.
3 provided in the speaker cabinet 1 for medium and high sound according to the up and down
movement signal. When the vertical movement motor 22 is driven to rotate, the rotational power
of the vertical movement motor 22 is transmitted to the linear gear 20 provided on the shaft 19
via the circular gear 21, and the middle to high-tone speaker cabinet 1 is Move to
[0026]
The listener turns off the vertical movement switch when the high and low tone speaker units 1a
and 1b of the middle and high tone speaker cabinet 1 reach the height of their ears. As a result,
the high and low sound speaker units 1a and 1b of the middle to high sound speaker cabinet 1
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can be positioned at the height of the listener's ear.
[0027]
The listener thus turns the high and low tone speaker units 1a and 1b of the middle to high tone
speaker cabinet 1 in the direction of the user, and the high and low tone speaker units 1a and 1b
are on their ears. When the height is reached, next, the remote controller 5 is used to designate
the start of sound generation. The sound generation level can be varied by a sound generation
level variable switch provided in the remote controller 5, and the listener specifies an arbitrary
sound generation level by the sound generation level variable switch.
[0028]
The signal specifying the sound generation level is supplied to the system controller 4 via the
receiver 6. The system controller 4 supplies a level variable signal to the level variable circuit 7
in accordance with the signal specifying the tone generation level. An audio signal from a sound
source (not shown) is supplied to the level variable circuit 7 via the input terminal 12, and the
level variable circuit 7 varies the level of the audio signal according to the level variable signal,
This is supplied to the amplifier 8.
[0029]
The amplifier 8 amplifies the audio signal with a predetermined gain and supplies the amplified
signal to a band dividing circuit 9. The band dividing circuit 9 divides the audio signal supplied
via the amplifier 8 into a high band audio signal, a middle band audio signal and a low band
audio signal, and the high band and middle band audio signals. Is supplied to the speaker unit 1a
for high sound and the speaker unit 1b for medium sound provided in the speaker cabinet 1 for
middle and high sound respectively, and an audio signal of the low band is provided in the
speaker cabinet 2 for bass The signal is supplied to the low frequency speaker unit 2a.
[0030]
As a result, from each of the speaker units 1a, 1b and 2a, sound of an arbitrary level is divided
into high sound, middle sound and low sound.
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[0031]
As described above, the loudspeaker apparatus according to the first embodiment adjusts the
directions of the high and low pitch speaker units 1a and 1b of the above-mentioned mid to high
tone speaker cabinet 1 so as to turn to their own direction. After adjusting the speaker cabinet 1
to the height of the listener's ear, the speaker cabinet 1 can be adjusted to sound at an arbitrary
level, that is, it is sounded from the high and medium sound speaker units 1a and 1b. Can change
the directionality of the sound being sounded, and also the sound level to be pronounced, so it is
easy to always make the sound field with an optimal sense of reality always at any level
according to the listener's listening point It can be set to
[0032]
Next, by using two speaker devices according to the first embodiment as described above, an
operation when the specification of the stereotype is made will be described by giving a specific
example.
First, as shown in FIG. 5A, the first speaker device 40 and the second speaker device 41 having
the characteristics as described above are installed at arbitrary intervals at the corners of the
room, and the listener E Explain the case of sitting in the middle of the room and listening to the
voice.
[0033]
In this case, the listener E uses the remote controller 5 as shown in FIG. 5A, the sound generator
of the high / high sound speaker unit 40 a of the first speaker device 40, and the second speaker
device 41. Both of the sound producing units of the middle to high-tone speaker unit 41a are
adjusted so as to face in their own direction.
Next, the listener E uses the remote control 5 and as shown in FIG. 5 (b), the middle high / low
sound speaker unit 40 a of the first speaker device 40 and the middle / high sound of the second
speaker device 41. The speaker units 41a are adjusted to have the height of their ears when
sitting together.
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[0034]
Then, since the listener E has the same distance from the first and second speaker devices 40 and
41, as shown in FIG. The sound levels produced by the first and second speaker devices 40 and
41 are adjusted to the same level. As a result, it is possible to easily set a realistic sound field that
is optimal for the listener E to sit in the middle of the room and listen to the voice.
[0035]
Next, as shown in FIG. 6A, the first and second speaker devices 40 and 41 are installed at
arbitrary intervals at the corners of the room, and the listener E substantially lowers the lower
left side of the room. The case of sitting on the floor and listening to the voice will be described.
In this case, the listener E uses the remote controller 5 as shown in FIG. 6A to indicate the sound
producing unit of the medium / high sound speaker unit 40 a of the first speaker device 40 and
the second speaker device 41. Both of the sound producing units of the middle to high-tone
speaker unit 41a are adjusted so as to face in their own direction.
[0036]
Next, the listener E uses the remote control 5 and as shown in FIG. 6 (b), the middle high / low
sound speaker unit 40 a of the first speaker device 40 and the middle / high sound of the second
speaker device 41 The speaker units 41a are adjusted to have the height of their ears when
sitting together. And since the above-mentioned listener E is nearer than the distance from the
above-mentioned 2nd speaker apparatus 41 to self since the distance from the above-mentioned
1st speaker apparatus 40 to self is shown in Drawing 6 (a), The sound level generated by the
second speaker device 41 is adjusted to be higher than the sound level generated by the first
speaker device 40 using the remote controller 5.
[0037]
Thus, it is possible to easily set a sound field having a sense of reality that is optimal when the
listener E sits approximately at the lower left side of the room and listens to the voice.
[0038]
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10
Next, as shown in FIG. 7A, the first and second speaker devices 40 and 41 are installed at
arbitrary intervals at the corners of the room, and the listener E substantially lowers the lower
right of the room. The case of standing on the side and listening to voice will be described.
In this case, the listener E uses the remote controller 5 as shown in FIG. 7A to indicate the sound
generator of the high / high sound speaker unit 40 a of the first speaker device 40 and the
second speaker device 41. Both of the sound producing units of the middle to high-tone speaker
unit 41a are adjusted so as to face in their own direction.
[0039]
Next, the listener E uses the remote control 5 and as shown in FIG. 7 (b), the speaker unit 40 a
for medium to high sound of the first speaker device 40 and the middle to high sound of the
second speaker device 41. The speaker units 41a are adjusted to have the height of their own
standing ears. And since the listener E is closer to the self from the second speaker device 41
than to the self from the first speaker device 40, as shown in FIG. 7A, The sound level generated
by the first speaker device 40 is adjusted to be higher than the sound level generated by the
second speaker device 41 using the remote controller 5.
[0040]
As a result, when the listener E stands approximately at the lower right side of the room and
listens to an audio, it is possible to easily set a sound field having a sense of reality that is
optimal.
[0041]
Next, a second embodiment of the speaker device according to the present invention will be
described.
In the speaker apparatus according to the second embodiment, as shown in FIG. 8, two shafts 52
are fixed to the bass speaker cabinet 51 so as to maintain a distance wider than the width d of
the middle-high-pitched speaker cabinet 50. ing. A support bar 53 provided with two insertion
holes to be inserted into the two shafts 52 is fixed to the above-mentioned speaker cabinet 50 for
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middle and high sound. Further, a screw-cut shaft 54 is fixedly provided in the speaker cabinet
50 for middle-high-pitched sound so as to be parallel to the shaft 52.
[0042]
The portion of the threaded shaft 54 inserted into the bass speaker cabinet 51 is threaded.
Further, in the above-mentioned bass speaker cabinet 51, there is a hole into which a screw cut
portion 54a which is a screw cut portion of the screw cut shaft 54 is inserted, and a screw cut
screw cut hole 55a is provided. The rotating gear 55 is provided.
[0043]
The threaded portion 54 a of the threaded shaft 54 is inserted into the threaded hole 55 a of the
rotating gear 55. Further, the circular gear 55 is configured to rotate along with the rotation of a
rotating gear 57 provided to the vertical movement motor 56.
[0044]
In the speaker apparatus of the second embodiment having such a configuration, when the
vertical movement motor 56 is driven to rotate, the rotary gear 57 rotates, and the circular gear
55 rotates as the rotary gear 57 rotates. . As described above, since the screw cutting hole 55a of
the circular gear 55 is screwed off, the screw cutting shaft 54 is moved up and down by the
rotation of the circular gear 55, and accordingly, the speaker cabinet for middle-high-pitched
sound 50 moves up and down.
[0045]
For this reason, the speaker apparatus according to the second embodiment can match the
height of the middle to high-tone speaker unit 50 with the height of the listener's ear.
[0046]
Next, a third embodiment of the speaker device according to the present invention will be
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described.
In the speaker apparatus according to the third embodiment, as shown in FIG. 9, the shaft 62 is
fixed to the bass speaker cabinet 61 so as to stand up. The middle and high-pitched speaker
cabinet 60 is provided on the shaft 62 so as to be vertically movable without being rotated.
Further, a pulley (rotary pulley) 63 is provided at the upper end portion 62 a of the shaft 62.
[0047]
Further, the bass speaker cabinet 61 is provided with a vertical movement motor 68, and the
vertical movement motor 68 is provided with a rotary gear 67. The rotating gear 67 meshes with
the circular gear 66. The circular gear 66 is fixed to the wire winding portion 65, and the wire
winding portion 65 is interlocked with the circular gear 66.
[0048]
The speaker cabinet 60 for middle-high-pitched sound is suspended via the pulley 63 by the wire
64 wound up or delivered by the wire winding unit 65.
[0049]
In the speaker apparatus of the third embodiment having such a configuration, when the vertical
movement motor 68 is rotationally driven, the rotary gear 67 is also rotated.
Since the rotating gear 67 meshes with the circular gear 66, the circular gear 66 rotates as the
rotating gear 67 rotates. The wire winding unit 65 rotates in conjunction with the rotation of the
circular gear 55. As a result, the wire 64 is wound up or delivered, and the middle to high-tone
speaker cabinet 60 moves up and down.
[0050]
For this reason, the speaker apparatus according to the second embodiment can match the
height of the middle to high-tone speaker unit 50 with the height of the listener's ear.
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[0051]
In both of the speaker devices according to the second and third embodiments, the middle and
high-tone speaker cabinets 50 and 60 can move only up and down. However, the middle- and
high-tone speaker cabinets 50 and 60 can be moved. For example, by providing a reflector 70 as
shown in FIG. 10, the sound to be produced can be reflected to the left and right.
[0052]
For example, as shown in FIG. 11, the reflecting plate 70 is configured such that a plurality of
substantially rectangular plate members 71 are vertically arranged at predetermined intervals.
The plurality of plate members 71 are all connected by a connecting rod 72.
Such a reflection plate 70 is provided by the support rod 73 in front of the high / low sound
speaker unit of the middle / high sound speaker cabinet 50 or the middle / high sound speaker
cabinet 60.
[0053]
Of the plate members 71, for example, the support rod 73a of the leftmost plate member 71a is
coupled to a reflection plate rotation motor 74 which is reflection plate rotation means, and the
reflection plate rotation motor 74 is rotated. Then, all the plate members 70 rotate.
[0054]
Therefore, such a reflection plate 70 is provided in the speaker cabinets 50 and 60 for medium
and high sound in the speaker apparatus according to the second and third embodiments, and
the speaker cabinets 50 and 60 for medium and high sound as described above are The
reflection plate 70 is rotated to reflect the sound produced from the high / low sound speaker
unit to the left and right, so that the sound is produced from the high / low sound speaker unit.
Sound can be adjusted to reflect it in your own direction.
[0055]
For this reason, the directivity of the sound to be pronounced can be arbitrarily changed, and a
sound field having an optimum sense of reality can be easily set according to the listening point.
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[0056]
In the speaker devices according to the second and third embodiments, only the middle and high
sound speaker cabinets 50 and 60 move up and down, but the middle and high sound speaker
cabinets 50 and 60 are respectively left and right. In the case of rotating only, as shown in FIG.
12, by providing a plurality of substantially rectangular plate-like members 81 with a
predetermined interval and overlapping horizontally, a high-tone product can be used. , The
sound emitted from the speaker unit for middle sound can be reflected up and down.
[0057]
Therefore, the middle and high-tone speaker cabinets 50 and 60 are rotated to the left and right
to adjust their direction, and the sound produced from the high- and mid-tone speaker units is
reflected in the user's direction. By adjusting, the directivity of the sound to be pronounced can
be arbitrarily changed, and an optimum realistic sound field can be easily set according to the
listening point.
[0058]
According to the present invention, the speaker apparatus according to the present invention can
move the speaker cabinet up and down according to the relative position between the listener
and the speaker cabinet containing the speaker unit, and move the speaker cabinet left and right.
The control unit controls the rotating unit to be rotated to change the directivity of the sound
emitted from the speaker unit, so that the speaker unit can be moved up and down to the height
of the listener's ear. Since the sound can be directed toward the listener and sounded out, it is
possible to always set the sound field having the most realistic sensation regardless of the
listening position and the listening direction.
[0059]
Further, in the speaker device according to the present invention, the reflecting plate rotating
means controls the reflecting plate for reflecting the sound produced from the speaker unit
according to the relative position between the listener and the speaker cabinet in which the
speaker unit is housed. Then, by changing the directivity of the sound produced from the speaker
unit, the sound produced from the speaker unit can be made variable in the direction of the
listener, so again, regardless of the listening position or the listening direction. You can always
set the sound field with the best sense of reality.
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