Date and time:2019Years6Month22Day(Sat)　14:00-15:30
Location: Otsu City, Shiga Prefecture　Biwako Hall
Participation:9First name (Member7First name, non-member2First name)

　This year's Kansai facility tour will be held at Biwako Hall in Otsu City (1998Completed in the year) visited.Biwako Hall is the first in western Japan4It is a theater with a face stage, and is active as a hall dedicated to performing arts such as opera, ballet, and concerts.

In addition to visiting the backside of the theater such as the stage, sound room, dimming room, and dressing room, which you cannot normally enter, you will also be asked to explain the features of stage tools such as microphones and lighting, and further sound and dimming. I was able to actually operate about.

Audience seat: Since the absorption of sound by people differs depending on whether there is an audience or not, it seems that even if the rehearsal works well, the actual sound is not good enough and the artist cannot concentrate on the performance.At Biwako Hall, by considering the wood of the seats, the angle of the seating surface when folded, and the cushioning materials such as the backrest, it is possible to obtain the same acoustic effect as the actual performance even when there is no audience.In addition, it was said that movable ceilings and walls are playing an active role in adjusting the sound depending on the performance.
Maidai:18x18mIn addition to the front stage of3Because there is a face4It's called a face stage.In addition, the front stage moves up and down and is used to install stage props.Even if you want to pull the opera from overseas as it is, if there is little space on the stage other than the front, you need to omit the production, but4It was said that if it is a face stage, it can be handled as it is without omission.It was a masterpiece that the front stage rotated and moved up and down and back while riding on the stage.When moving up and down, I could see that the huge counterweight was moving up and down like an elevator, and I could feel that engineering was useful for society.
Mic and Wright: There are many types of microphones that deliver the sound of the stage to the audience, and they demonstrated that it is meaningless if they do not have the directivity of the microphones in mind (the basics of how to hold a microphone are microphones). To face).Also, if you hold the sound collecting part of the microphone so that it takes a lot of work, the directivity will change, and the wireless microphones that are widely used these days have the upper and lower frequency bands cut when digitizing the sound. The artist in the club said that he intended to use a wired microphone that is inconvenient but does not cut the band.The lack of information when digitized is the basis of signal processing, but it is often used in our lives because it brings a lot of convenience.On the other hand, it was a fresh feeling that analog is still better for those who value the difference.

　 Regarding the lighting, I was able to experience the fact that a fairly strong light was shining on the stage to make the actors on the stage look clear.I could see that the opera scene was formed by adjusting the angle of lighting, the amount of light, and the type of lighting according to the standing position of the actor, and I felt the craftsmanship that the machine could not enter.I think that technological innovation will advance automation, but I felt that there are things that only humans can do.By the way, when I look at the audience seats while illuminated by the stage lights, I can only see the faces of the audience clearly in the front row, and if I want to make eye contact with the artist, I find that there is no point other than the front row, which makes me feel complicated. I did.

Even if I usually go to the concert hall, I can hardly feel anything more than the impression that the performance and music were wonderful and what was good.This time, you can see what kind of technology is used to realize that stage, and even if there are similar opportunities in the future, it seems that you can see it from a different perspective than before. is.

Participants this time9Not many namesJSPENot only the members, but also the members' families2I think it was a big step forward for us to participate.Family cooperation is indispensable for us to play an active role as engineers, so I would like to continue planning events that allow not only members but also families to interact with each other.At the same time, if you would like to go to such a place, please let us know (please let us know ()plan.2007@jspe.org）..It is most important that all members want to participate.

(Personally, I think it would be nice to have a tour of Kindai tuna and Kindai experimental reactors next year, but I would appreciate it if you could give us your opinion.)

JSPEPlanning Subcommittee

Nishikubo