How loud is 43Db when compared with 52Db. Sorry to ask what seems to me as a
slightly daft question but our kitchen is open plan and noisy appliances are
I obviously do not own a decibel meter (I am sure they are not called that).
So could anyone offer a comparison.
Christian, thanks. It is a 20% reduction which I agree would be very
noticeable. My quandary is whether or not 52db would be invasive in an open
plan kitchen/dining area, but this could be subjective anyway.
Appliance in question is a dishwasher (we do not have one currently). The
comparison is between an AEG (43db) and a Bosch (52db). I have no data on
our existing Hotpoint washing machine to see what noise rating that has.
It isn't a 20% reduction. The different between 52 and 43 is the same as the
difference between 10 and 1. It is even the same as reducing 5 to -4. It is
reducing the power of the noise by a factor of 8. Ears have an amazing
dynamic range, so it won't actually be perceived as an 8 times reduction. I
would guess it will sound about half as loud.
A quick Google search would have removed the need for the question (!) and
Decibel ratings and common sounds
Lowest sound audible to human ear
Quiet library, soft whisper
Quiet office, living room, bedroom away from traffic
Light traffic at a distance, refrigerator, gentle breeze
Air conditioner at 20 feet, conversation, sewing machine
Busy traffic, office tabulator, noisy restaurant
Subway, heavy city traffic, alarm clock at 2 feet, factory noise
Truck traffic, noisy home appliances, shop tools, lawnmower
Chain saw, boiler shop, pneumatic drill
Rock concert in front of speakers, sandblasting, thunderclap
Gunshot blast, jet plane
Rocket launching pad
(anti-spam is as easy as 1-2-3 - not)
Don't worry about it, if everybody was a google expert the ng would have to
shut up shop, unless we could find a few wannabe trolls to have some fun
with - and I wouldn't have seen that handy list - I'll make a point to use
earplugs on a rocket lauching pad next time
It's almost 10 times quieter. However, the figures, and the
behaviour of the ear are logarithmic (approximately).
The difference between the figures is important, as is the method of
measurement and the distance. Unless these are the same, you can't
compare the figures.
Assuming that the conditions are the same, then if noise is a concern,
this is a difference worth having.
To email, substitute .nospam with .gl
If you give the average person a volume control and get them to set it to
half the level, and then measure it, it will be about 10 dB, so the
difference between 43 and 52 is, in practice, a great deal.
*Born free - taxed to death *
Dave Plowman firstname.lastname@example.org London SW 12
Missing from the table shown previously in thread is a garden vacuum cleaner
(for sucking up leaves etc). It is about 250db (oh yes it is - especially at
8:30 in the morning and I work nights sometimes). Nice neighbours eh! :-)
We have a 46dB Dishwasher (Bosch) and its very quiet - much quieter than the one
replaced - this was also a Bosch
but 20 years older (never went wrong) and we gave to a friend 30 months ago, who
runs it twice a day in a B and B !!
(its well shagged though now !)
46dB is quiet enough to have a normal conversation 4 feet away in a quiet room
notice its on when someone
points out it is on - not even obtrusive - it was selected for its quietness as
the kitchen / diner where the family
seem to spend most of their time !!
Hope that helps...
We got the model below that one - 51db - and most of the time you
don't really know it's on, and the kitchen is the quietest room in the
house in relation to traffic and other noise. We get more noise in the
front room from someone passing in the street :)
That's *passing* for any of you that might think summat else :oD
9dB difference. 3dB is a doubling, which is also roughly the smallest
level that you'll notice. So this is about "3 subjective notches"
43 dB is a "typical room" sort of level. 52dB is "outdoors on a city
(Yes, and I _know_ that dB aren't an absolute measure)
Die Gotterspammerung - Junkmail of the Gods
The following web page provides dB(A) ratings for a personal computer,
though I'm not sure (okay, okay, I don't know) what the "A"
Above 35dB(A) is, in PC terms, loud.
Less than 25dB(A) is extremely quiet.
I can vouch for these figures having fitting a couple of ultraquiet
fans to my PCs.
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