"UnsteadyKen" wrote in message
m...
Keith G said...

Ditto here, but "noises off" are most obviously way off over there.


Not surprised!! You mustn't leave a 'hole in the middle' with wide
speaker
arrangements!

I was getting a good solid central image but with exaggerated width,
and stereo was of the ping pong variety, visitors enjoyed it.
It's surprising how many people have never heard a reasonable stereo
image . Wow! Is this multichannel? you can't hear the speakers. etc.


Been there and done that no end of times!



I've moved them closer together and further out from the back wall now,
the wide placement was yet another unsuccessful experiment to tame the
room boom in my 8 x 12 x 16 ft auditioning environment. It would appear
that acoustics don't get much priority when designing sheltered
accommodation.


The easiest 'room treatment' in my book is to fill the room with soft
furniture. It's hard, reflective surfaces combined with wide, open spaces
that give you problems.



They probably think we'll be deaf anyway. Speaking of which, I had a
comprehensive hearing test earlier this year and the audiologist was
surprised how good mine was at age 58.5 . He remarked that if he were
to judge my age from the results he would place me in the 25 to 30 age
bracket. Me very chuffed.


That's excellent, but I suspect a good 'audiologist' is one who knows how to
conduct his tests properly but also sends his customers away feeling good
about themselves and things generally...

;-)


I'd never heard of SIGSALY till I googled it just now, interesting.
Like all the secret squirrel kit, we were never told how it worked or
where it came from, just how to operate it and do basic maintenance,
though in that case the punch cards were a bit of a give away.


There is a ton of very interesting 'audio' stuff once you get away from
'domestic hifi' it seems - mainly defence and Post Office and almost all of
it going back to the good old days of valves, from what I can see of it.
There is a continual dribble of very interesting programmes on these sort of
topics on BBC 4 and BBC 2 at various, odd times which I have recorded for
me!



I came across the BID150 link when I was trying to find out what
sampling rate and bit depth it operated at. I've tried simulating with
various programs but can't get low enough to approach the effect that
it had on voices. I would guess at a depth of 2 bits. Listening to
voices with it was most strange, It removed nearly all dynamic range
and the tiny inflections that make an individuals voice recognizable.
Only the most gross regional accents survived the process, but speech
was still perfectly intelligible.



Not my bag, but all very interesting....