In article , Keith G
wrote:

"Jim Lesurf" wrote in message
...
Hi,

Just to let people know I've just put up a new page which looks at the
effects of room acoustics and human hearing. In particular, to assess
the amplifier powers people might need. For reasons that should be
clear if you read it, the item is called "Imagine a Room Full of
Mirrors". :-)

When I get a chance I'll also put up the first two HFN articles I did
on 'Speaker Cables'.

Slainte,

Jim



Well, Jimbo - it certainly is dead in here! That's a lot of work (2,700
words?)

Actually, what takes most of the time is the work required to get the
results shown in the diagrams! I usually 'write' articles by generating
results and graphics, then flow the words to explain what I've done and
what they show....

to go without a single flicker of acknowledgement!

You think that's bad, you should think how dissapointing it can be when
magazine articles seem to draw no comments in the form of 'letters to the
editor'. Alas, the levels of feedback from readers does generally seem low
unless you happen to gore their favourate animal. :-)

I had a skim through (I've only got 'skim' left these days, I'm afraid)
and found it very interesting; I note the comment about the varying
behaviour of different room/speaker combinations, but didn't see any
mention of 'hearing acuity' or even of the *clarity* of speakers used -
or don't they come into it when seeking an apparent 'loudness level' of
the audio system...??

All too complex. The results can be expected to vary with all kinds of
details of the room acoustic and speaker behaviour. Given I only had a few
kwords and 3-4 magazine pages I just wanted to get across the general idea
that in small domestic rooms the perceived sound level will be increased a
fair bit, so less powerful amps would be fine. This was prompted by reading
reports of an 'experiment' that showed you needed kw amps - but which was
done in a room the size of an assembly room. Much bigger room than most UK
homes.

('Clarity' should spark off a nice, busy, mile-long thread here - once I
slip the phrase 'fullrange driver' in somewhere! :-)

Is the last remark from golf or biking?... :-)

Slainte,

Jim

--
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