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Re: [microsound] Parametric EQ
On 08/05/2006, at 9:25 PM, Mark R. quoted:
— you grab a hold of the notch filter of the parametric and, like
tuning a
radio real slow, as you tune through the frequency . . . BINGO . . .
it will
find THE frequency and the feedback will go away, and that's exactly
where
the notch should be. Then you feather it out, and then you are done.
Why is
this not done so much today? Why are we not hearing people doing that?
Did
they forget? Hell, THIS IS SCIENCE. You can't forget science. Some
people
today just don't understand. 'Let's use a graphic EQ.' That's the worst
thing that ever hit us, the damned graphic EQ.
While a parametric eq with a large number of bands can be used to tune
a PA, most parametric eqs have 4 bands or less, making them of limited
use for PA tuning. In a difficult room, 4 bands is often not enough. I
also think that a fixed band graphic has several advantages over a
parametric in that when something rings during a gig, you can reach for
the frequency and pull it out straight away. This is much quicker than
finding the frequency on a parametric and when you are dealing with
feedback, speed is of the essence.
Some digital parametrics, with large numbers of bands are useful in PA
applications, in fact I've used a BSS Varicurve to tune a PA on several
occasions
http://www.bssaudio.com/products/equalisers/fcs-926/images.html
but I would have to say it can be a more complex and slow process
getting the same result and I'm not convinced the result is better than
with a good graphic. I would therefore question the position presented
above which makes some pretty naive assumptions about how people might
use a graphic for live sound.
julian
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