Re: weighting filter

On 20 Maj, 10:11, John Phillips <news0...@xxxxxxxxxxxxxxxxxxxxxxxx>
wrote:
On 2008-05-19, dpierce.cartchunk....@xxxxxxxxx

<dpierce.cartchunk....@xxxxxxxxx> wrote:
On May 19, 2:45 pm, icecube <matlab....@xxxxxxxxxxxxxx> wrote:
I'm trying to find away filter a signal with a weighting filter called
CCIR 468-4 (ITU-R 468-4) and AES17

so what i'm looking for in the math behind the weighting type so i can
use them

I believe ITU468-4 is the same as the old ANSI A weighting,
in which case, from:

Not as far as I can see.  See, for example:

   http://en.wikipedia.org/wiki/ITU-R_468_noise_weighting

The ITU-R standard BS.468-4 (not available for free, I think):

   http://en.wikipedia.org/wiki/Standard:ITU-R_468

shows a fairly simple (600 Ohm impedance, two inductors, five capacitors)
weighting network and a more complex constant resistance weighting
network.  

However these networks aren't reproduced in the URLs above although the
weights are, which may help the OP.

--
John Phillips

i was more looking the filter coef. but i'll try and see what i can do
with what i have which the information in the link
.

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