How many times have I strained to hear an important announcement from a PA system only for some cacophony to drown out the salient content?…too many times.
Today’s invention is a public address system which is attached to microphones arrayed within the space being addressed.
When the mics register too high a level of background noise (as eg when a train is leaving a station) the announcement, whether ‘live’ or prerecorded, is delayed until comparative quiet recurs.
There might be scope for raising the volume a little, rather than wait too long for a profound hush.
