Microports with positioning info and automatic panning

 For use in theatres:

To be able to locate actors' positions by ear, actors could wear microports that send their position on a linear Stage Left - Stage Right axis to the mixing board, where this geographical information is directly linked to the panning settings. Panning follows the actor automatically wherever they walk so that, if they were at the very left from the audience's view, their voice would only come out of the left Main PA speaker.

For settings with more loudspeakers and actors moving on a two-dimensional plane, it should mathematically be possible to construct a similar setup. Here, the actor could probably be described with the same algorithms used to predict the movement of planets (some differential equations). According to where the actor is on a two-dimensional plane, the acoustic signal is mixed together to match the actor's position in the room. If the audio signal does not exactly follow the actor but remains in one set position at all times, using microports in e. g, a room with audience watching from three or four sides would greatly confuse the audience. In bigger settings (like a stadium / amphitheatre), amplification of the voice may become absolutely necessary.

Additional thoughts:

In larger venues, one may want to achieve panning effects by other means than having different SPL in both speakers, such as playing with delay or other ideas, to avoid a situation in which people on the e. g. right side cannot hear a voice panned 100% to the left anymore. This could also be developed in an automated way, where the panning is an autofollow parameter determined by the current position of the actor.