Martin Underwood wrote:
"Cast_Iron" wrote in message

Perhaps they should provide every passenger with a
headset, then they be able to broadcast up to the minute
travel info. :-))

But if they did that, they'd have to develop a special
reverberation filter to render the announcements
unintelligible (as for PA announcements on tube platforms)
or only employ announcers with strong non-English accents
who were unfamiliar with station names or even the English
language ;-)

No problem, it could be built in, there's all sorts of filters available to
give audio effects.