JPH0650098U - Acoustic reflector device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide an acoustic reflector device that can be installed inconspicuously from the audience and can sufficiently improve the acoustics of a performance hall in response to the hall. [Structure] A through hole 3 is formed in an acoustic reflection plate 2 for reflecting a musical sound, and a microphone 4 is attached to the back side of the acoustic reflection plate 2 so as to face the through hole 3.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an acoustic reflector device used for improving acoustics of facilities such as a multipurpose hall and a gymnasium.

[0002]

[Prior art]

 In general, facilities that are actually used as venues for playing music are from simple music halls with a full-fledged acoustic design that can withstand even classical music performances, to simple venues suitable for playing light music. There are a variety of acoustically designed multipurpose halls and gymnasiums with almost no acoustic design. Therefore, conventionally, when performing in a facility such as a multipurpose hall or a gymnasium, a microphone or an acoustic reflector device is used to improve the acoustics of the facility.

When a microphone is used, as shown in FIG. 3, the microphone 31 is placed on a stand 32 that stands on the stage (FIG. 3A) or a support rod 33 that is lowered from the ceiling of the stage (see FIG. b)), the performance sound signal input to the microphone 31 is electrically processed by a sound processing device including an amplifier and a mixing device, then output from a speaker, and is directly sent to the audience from the stage. By superimposing it on the sound, we try to improve the acoustics of the performance hall.

When the acoustic reflector device is used, as shown in FIG. 4, an acoustic reflector 41 for reflecting the performance sound is movably installed behind the stage (see FIG. )), By hanging the wire 42 from the ceiling of the stage ((b) in the figure) and superimposing the performance sound reflected by the acoustic reflector 41 with the live performance sound, the sound of the performance hall is increased. I am trying to improve.

[0005]

[Problems to be solved by the device]

 However, the microphone method shown in FIG. 3 has a drawback in that the installed microphone can be seen from the audience, and the audience can easily understand that the performance sound is electrically processed.

In addition, since the method using the acoustic reflector device of FIG. 4 simply reflects the performance sound, the reflected sound volume of each acoustic reflector plate is inherently small, which is relatively large. There is a drawback that large-scale facilities cannot obtain sufficient sound. In addition, the sound quality of the performance hall depends on many factors such as the shape of the facility and the positional relationship between the stage and the seats.Therefore, in order to obtain good sound, the position and angle of the acoustic reflector should be set. There is a drawback in that you have to finely adjust etc.

The present invention has been made in order to solve such a problem, and can be installed so as not to be conspicuous from the audience seats, and the acoustics of a performance hall can be adequately improved by appropriately responding to the venue. The object is to provide an acoustic reflector device capable of

[0008]

[Means for Solving the Problems]

 In order to achieve the above object, the acoustic reflector device of the present invention has a through hole formed in the acoustic reflector for reflecting a musical sound, and a microphone is attached to the back side of the acoustic reflector so as to face the through hole. Is.

[0009]

[Action]

 When this acoustic reflector device is installed in a performance hall and a performance is performed, the performance sound is reflected by the acoustic reflector and also picked up through the through hole to the microphone behind the acoustic reflector. It is converted into an electric signal. Therefore, the converted electric signal is input to, for example, a sound processing device, subjected to electric sound processing suitable for the performance venue, and then output from a reproduction device such as a speaker and sent to the audience. The sound of the facility can be improved by superimposing the live performance sound sent directly to the audience and the performance sound reflected by the acoustic reflector. In this case, the microphone is attached to the back of the acoustic reflector, so it is almost invisible from the audience.

[0010]

【Example】

 Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a rear view of an acoustic reflector device to which the present invention is applied. The acoustic reflector device 1 is used by being installed on the ceiling of a stage of a performance hall. The acoustic reflector 2 for reflecting the performance sound has a rectangular shape with a convex curve on the front side. A circular through hole 3 is formed in the center of the acoustic reflection plate 2, and a microphone 4 is screwed on the back surface and faces the through hole 3. The microphone 4 is adapted to be electrically connected wirelessly to a sound processing device (not shown) including an amplifier and a mixing device, and the sound processing device is further equipped with a speaker provided on the wall of the performance hall. (Not shown). Further, wires 5 for suspending the acoustic reflection plate 2 are fixed to four corners of the back surface of the acoustic reflection plate 2 via fixing metal fittings 6.

Next, the operation of the acoustic reflector device 1 will be described. A plurality of this acoustic reflector device 1 is installed by attaching the other end (not shown) of the wire 5 to the ceiling of the stage of the performance hall and suspending it from the ceiling so that the front surface is inclined obliquely downward. It When a performance is performed on the stage, the performance sound is sent to the audience seats directly and after being reflected by the acoustic reflector 2. A part of the performance sound directed to the acoustic reflector 2 is picked up by the microphone 4 through the through hole 3 and converted into an electric signal, which is then sent to the acoustic processing device where it is electrically processed. Later, it is output to the audience through the speaker. Therefore, the audience in the audience can hear the electrically processed performance sound and the direct performance sound and the performance sound reflected by the acoustic reflector 2 in an overlapping manner.

Therefore, the performance sound signal from each microphone 4 is amplified by the amplifier of the sound processing device so that the optimum sound can be obtained in the performance hall, so that the sound volume of the conventional sound reflector alone is increased. The shortage can be eliminated and the acoustics of the performance hall can be improved sufficiently and optimally. Further, it is possible to add the respective performance sound signals amplified by the amplifier to each other by the mixing device, thereby making it possible to provide various sounds in the performance hall. Further, since the microphone 4 is attached to the back side of the acoustic reflection plate 2 and is inconspicuous from the audience seats, the audience is not aware that the acoustic processing is being performed.

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 reflector device 11 is foldable and movable. That is, the acoustic reflection plate device 11 has two upper and lower flat rectangular acoustic reflection plates 12 and 13, and the back surface of the upper acoustic reflection plate 12 is similar to the first embodiment described above. The microphone 14 is attached so as to face the through hole 15 formed in the center. The acoustic reflectors 12 and 13 are fixed to a pair of left and right upper support plates 16 and 16 and lower support plates 17 and 17, respectively. The upper and lower support plates 16 and 17 are rotatably connected to each other by a hinge 18, and the angle between them can be adjusted to an arbitrary angle. The lower end of the lower support plate 17 is connected to the base 20 to which the casters 19 are attached. Other configurations are the same as those in the first embodiment.

Therefore, by installing this acoustic reflector device 11 behind the stage of a performance hall, for example, as in the case of the first embodiment, the sound of the performance hall can be sufficiently and optimally improved. . Further, since the acoustic reflector device 11 is configured to be foldable and movable, it has an advantage of being easy to install and store.

The present invention is not limited to the above-described embodiment, and can be implemented in various modes. For example, in the embodiment, the acoustic reflection plate is formed in a convex shape or a flat plate shape on the front side, but it may be formed in a concave shape on the front side so that the acoustic reflection plate has a sound collecting function of the microphone. In addition, the through holes may be covered with a net or a sound-permeable cloth in order to make the microphone more inconspicuous. In addition, the detailed configuration can be appropriately changed without departing from the spirit of the present invention.

[0017]

[Effect of device]

 As described above in detail, in the acoustic reflector device of the present invention, since the microphone is attached to the back side of the acoustic reflection plate, the microphone can be installed inconspicuously from the audience, and the microphone can be installed in an appropriate acoustic processing device and By combining this with a playback device, the acoustics of the performance hall can be improved appropriately by adapting to the venue.

[Brief description of drawings]

FIG. 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.

FIG. 2 is a perspective view similar to FIG. 1, according to a second embodiment of the present invention.

FIG. 3 is a perspective view schematically showing a conventional device that improves sound by using a microphone.

FIG. 4 is a perspective view showing an outline of a conventional device that improves acoustics by using an acoustic reflector.

[Explanation of symbols]

 1 Acoustic Reflector Device 2 Acoustic Reflector 3 Through Hole 4 Microphone 11 Acoustic Reflector Device 12 Acoustic Reflector 13 Acoustic Reflector 14 Microphone 15 Through Hole

Claims (1)

[Scope of utility model registration request] 1. An acoustic reflector device, wherein a through hole is formed in an acoustic reflector for reflecting a musical sound, and a microphone is attached to the back side of the acoustic reflector so as to face the through hole.