Hi
I have recently seen a system in an auditorium (mainly used for
classical music) where a temperature rise system was installed
underneath the stage. The idea was that by rising the temperature at
different parts of the stage they could enhance certain frequencies. Not sure if this increased the travelling speed for sound in that part of the stage, making it travel quicker to its destiny (receiver or refelction panels).
Unfortunately I couldn´t elaborate at all on this with the auditorium´s engineer.
Has anybody seen this before and could you give us a brief explanation
of the theory behind this system?
CHeers
Sergio
Most interesting but I would question the effectiveness of this. After all, how can they control the air temp so tightly in such an open airspace, especially if the temp on stage had different gradient locations and no boundary controls. Air would be moving and transferring heat rather quick.
Yes, much more questions would need answers and hard data to support:
How much temp change to affect an audible change in intended frequency, especially during musical passages, unlike a test tone that is stable in frequency and power.
How would that affect frequency arrival at the early reflections and in the auditorium where the listener is.
