Its the system used I'd like to find out about though.

Brian

--
Brian Gaff....Note, this account does not accept Bcc: email.
graphics are great, but the blind can't hear them
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"Phil Allison" wrote in message
...

"Brian Gaff"

Hi, I was just wondering, does anyone know anything about the system
installed in Theatres and cinemas to give audio description?I'm not
interested in the DVD interface and all that stuff. I'd like to know how
the transmission is done. I assume its analogue of some sort, judging by
the way the noise level can vary if you move.
The reason I'm interested is that a user of these is looking for a device
to be able to test the headsets are working when they are giving them to
the customers. Being a big multi screen cinema with only 1 equipped
screen, it is irritating to the blind customers to get in the cinema, and
then find when the film starts, the headsets battery is knackered or the
headset is not working for some reason. What seems to be needed is a
device like a remote control, which puts out a tone on the infra red
system used so the set can be tested at the box office. After all, if it
is not working in the cinema, and you are not with a sighted person,
getting the headset swapped is going to be awkward and would mean missing
the film or part of it.


** The best idea is to find an IR transmitter intended for domestic use
that is a close enough match to the system used in the cinema. Then it
could be used for testing purposes.

Gotta know all about the cinema system to do that.

Or get very lucky.


...... Phil