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JPH0650098

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DESCRIPTION JPH0650098
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an
acoustic reflector device used to improve the acoustics of facilities such as multipurpose halls
and gymnasiums.
[0002]
2. Description of the Related Art In general, a facility actually used as a music performance hall is
a light music degree from a dedicated music hall with a full-scale acoustic design that can
sufficiently withstand the performance of classical music. There are various types such as a
multipurpose hall with a simple acoustic design suitable for the performance of the musicians
and a gymnasium with little acoustic design. For this reason, conventionally, when performing in
a facility such as a multipurpose hall or a gymnasium, a microphone or an acoustic reflection
plate device is used to improve the sound of the facility.
[0003]
In the case of using a microphone, as shown in FIG. 3, a stand 32 (shown in FIG. 3A) placed on
the stage or a support rod 33 lowered from the ceiling of the stage (shown in FIG. b) attached to
the microphone 31 and processed electrically by a sound processing device including an
amplifier, a mixing device, etc., and then output from a speaker and sent directly from the stage
to the audience seat And improve the acoustics of the performance venue.
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[0004]
When using an acoustic reflector, as shown in FIG. 4, an acoustic reflector 41 for reflecting the
performance sound is movably installed behind the stage (FIG. 4 (a)). Improve the sound of the
performance venue by hanging the wire 42 from the ceiling of the stage with the wire 42 (Figure
(b)) and overlapping the playing sound reflected by the acoustic reflector 41 with the raw playing
sound. It is like that.
[0005]
However, in the method by the microphone of FIG. 3, it is easily understood by the audience that
the installed microphone can be seen from the audience and the processing sound is electrically
processed. It has the disadvantage of being
[0006]
Further, the method according to the acoustic reflector apparatus of FIG. 4 merely reflects the
playing sound, so the volume of reflection of each acoustic reflector is inherently small, and
therefore, the scale is relatively large. There is a drawback in that no sufficient sound can be
obtained in the
Furthermore, the sound quality of the performance venue depends on many factors such as the
shape of the facility and the positional relationship between the stage and the audience, so to
obtain a good sound, the installation position and installation angle of the acoustic reflector
There is a drawback that it has to be adjusted slightly.
[0007]
The present invention has been made to solve such problems, and can be installed so as to be
inconspicuous from the audience, and the sound of the performance venue should be properly
improved corresponding to the venue. Aims to provide an acoustic reflector device that can
[0008]
SUMMARY OF THE INVENTION In order to achieve the above object, according to the acoustic
reflector device of the present invention, a through hole is formed in an acoustic reflector for
reflecting musical tones, and a back side of the acoustic reflector is provided. The microphone is
attached to the through hole so as to face the through hole.
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[0009]
[Operation] When this acoustic reflection plate device is installed in a performance hall and
played, the performance sound is reflected by the acoustic reflection plate, and the back side of
the acoustic reflection plate through the through hole. Is picked up by the microphone and
converted into an electrical signal.
Therefore, the converted electric signal is input to, for example, a sound processing device, and
subjected to electrical sound processing so as to be suitable for the performance hall, and then
output from a reproduction device such as a speaker and sent to the passenger side. The sound
of the facility can be improved by superimposing it on the live playing sound sent directly to the
and the playing sound reflected by the acoustic reflector.
In this case, the microphone is attached to the back of the acoustic reflector so that it can hardly
be seen from the audience.
[0010]
Preferred embodiments of the present invention will be described in detail with reference to the
drawings.
[0011]
FIG. 1 is an external view of the acoustic reflector device to which the present invention is
applied from the back side.
The acoustic reflection plate device 1 is used by being installed on a ceiling of a stage of a
performance hall or the like.
The acoustic reflection plate 2 for reflecting the playing sound has a curved rectangular shape
convex on the front side.
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A circular through hole 3 is formed at the center of the acoustic reflection plate 2, and the
microphone 4 is screwed on the back surface to face the through hole 3. The microphone 4 is
electrically connected wirelessly to a sound processing device (not shown) including an amplifier,
a mixing device and the like, and the sound processing device is further provided with a speaker
provided on the wall of the performance hall. Connected to (not shown). In addition, at the four
corners of the back surface of the acoustic reflection plate 2, wires 5 for suspending the acoustic
reflection plate 2 are fixed via fixing fixtures 6.
[0012]
Next, the operation of the acoustic reflector plate device 1 will be described. The acoustic
reflector plate device 1 is installed with a plurality of other ends (not shown) of the wires 5
attached to the ceiling of the stage of the performance hall and suspended from the ceiling so
that the front surface is inclined obliquely downward. . When a performance is performed on the
stage, the performance sound is sent to the audience directly and after being reflected by the
acoustic reflector 2. In addition, a part of the performance sound directed to the acoustic
reflection plate 2 is picked up by the microphone 4 through the through hole 3 and converted
into an electrical signal, and then sent to the acoustic processing device where it is electrically
processed here , Output to the passenger side via the speaker. Therefore, to the audience at the
audience, the electrically processed performance sound and the direct performance sound and
the performance sound reflected by the acoustic reflection plate 2 overlap and sound.
[0013]
Therefore, the sound volume of the conventional acoustic reflector alone is insufficient by
amplifying the playing sound signal from each microphone 4 with the amplifier of the sound
processing apparatus so that the optimum sound can be obtained at the playing place. To
improve the sound of the performance venue adequately and optimally. Further, it is also
possible to further add the respective performance sound signals amplified by the amplifier to
each other by the mixing device, whereby the sound of the performance venue can be diversified.
In addition, the microphone 4 is attached to the back side of the acoustic reflection plate 2 and is
not noticeable at all from the audience, so the audience is not noticed that the acoustic
processing is being performed.
[0014]
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FIG. 2 is an external view of the acoustic reflector device of the second embodiment of the
present invention as viewed from the back side. The acoustic reflection plate device 11 is
foldable and movable. That is, the acoustic reflection plate device 11 has upper and lower two
flat rectangular acoustic reflection plates 12 and 13, and the back surface of the upper acoustic
reflection plate 12 is the same as in the first embodiment described above. The microphone 14 is
attached to face the through hole 15 formed at the center. The acoustic reflection plates 12 and
13 are fixed to the left and right pair of upper support plates 16 and 16 and the lower support
plates 17 and 17, respectively. The upper and lower support plates 16 and 17 are pivotally
connected to each other by the hinges 18, and the angle between the two can be adjusted to an
arbitrary angle. The lower end portion of the lower support plate 17 is connected to a base 20 to
which the caster 19 is attached. The other configuration is the same as that of the first
embodiment.
[0015]
Therefore, by installing the acoustic reflector device 11 at the back of the stage of the
performance hall, for example, the sound of the performance hall can be sufficiently and
optimally improved as in the first embodiment. In addition, since the acoustic reflection plate
device 11 is foldable and movable, it has the advantage of being easy to install and store.
[0016]
The present invention is not limited to the above-described embodiment, but can be implemented
in various modes. For example, in the embodiment, the acoustic reflection plate is configured to
be convex or flat on the front side, but it may be concave on the front side so that the sound
reflection function of the microphone can be provided with the sound collection function of the
microphone. Also, in order to make the microphone less noticeable, the through holes may be
covered with a mesh or a sound-permeable cloth. In addition, it is possible to change suitably the
composition of details in the range which does not deviate from the meaning of the present
invention.
[0017]
As described in detail above, in the acoustic reflector device of the present invention, since the
microphone is attached to the back side of the acoustic reflector, it can be placed
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inconspicuously from the passenger seat, and the microphone is suitable. The combination with
the above-mentioned sound processing apparatus and reproduction apparatus has an effect such
that the sound of the playing place can be adequately improved corresponding to the place.
[0018]
Brief description of the drawings
[0019]
1 is a perspective view of an acoustic reflector device according to a first embodiment of the
present invention as viewed from the back side.
[0020]
2 is a perspective view similar to FIG. 1 according to a second embodiment of the present
invention.
[0021]
3 is a schematic perspective view of a conventional device for improving sound using a
microphone.
[0022]
FIG. 4 is a perspective view showing an outline of a conventional apparatus for improving sound
by using an acoustic reflection plate.
[0023]
Explanation of sign
[0024]
Reference Signs List 1 acoustic reflection plate device 2 acoustic reflection plate 3 through hole
4 microphone 11 acoustic reflection plate device 12 acoustic reflection plate 13 acoustic
reflection plate 14 microphone 15 through hole
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