How can the concert hall be light?
Artificial lighting, no windows. If there is a window (but not), it will have a serious impact on acoustic design.
It's usually made of high windows
For professional music hall, acoustical design should be carried out. It is not a simple window opening, and most of the concert halls are artificially illuminated.I do not know whether art institutions, such as the general concert hall, and energy-saving windows must be opened, we should consider high windows as well.
