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Old October 7th 07, 08:37 PM posted to uk.rec.audio
Don Pearce
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Default Noise Weighting Curves

On Sun, 7 Oct 2007 23:21:27 +0300, "Iain Churches"
wrote:


"Don Pearce" wrote in message
...
On Sun, 7 Oct 2007 21:25:51 +0300, "Iain Churches"
wrote:


"Don Pearce" wrote in message
...
On Sun, 7 Oct 2007 21:02:56 +0300, "Iain Churches"
wrote:


"Don Pearce" wrote in message
...


We aren't talking about what need be, but what is typical. The typical
valve amp lives in an open backed box with a 12 inch Celestion speaker
and quarter inch jacks for inputs. It also hums like it has forgotten
the words.


That is what *was* typical.
Things have changed:-)

Iain



How many hundreds of thousands of AC30s, Fender Tweeds, Marshall 50s
etc are still out there and going strong in pubs every Friday night.
They are still very much typical.

I thought we were talking hi-fi here?
Iain


No - typical valve amps. Hi Fi is a begged question in that it will
necessarily have low hum and noise, which would make the whole
discussion sort of pointless.

How can we play football here when you keep moving the
goal posts? :-)

Just insisting on a full-sized goal. :-)

I have some more info about ITU-468ARM. Are you still
interested?

Of course. What do you have? I've been playing with making noise files
with various weightings lately, And the ARM version is interesting
when applied in third octaves to noise, and seeing how loud they
sound.

d

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Pearce Consulting
http://www.pearce.uk.com