If you’re suffering from noise complaints the good old electronic orange is your best solution.
I installed in an electronic orange in a small hall back in the eighties which was sandwiched between a theatre and a concert hall.
The unit measures the level of the sound in the hall and, using preset levels, signals the stage/DJ via an illuminated orange ball when the sound is reaching a preset level.
When that preset level is reached and maintained for a pre-determined period the mains power feeding the stage/DJ is turned off.
Contact the Castle Group for more information