I know EQ will effect allsorts of things other than just the relative level / freq response of a system... however, I'm not clear that this is the case with digi EQ?
Is it the same? does a digi EQ have the same effect as an analog one?
Most likely you'll get the same kind of response as analogue equipment from amplitude and phase POV. This is because even though DSP is a lot more flexible than analogue filters, the underlying maths says you can't really do much better than what analogue filters give you if you need a minimal insertion delay (which you do for live work).
Fundamentally, you can't modify the frequency content of a signal in real time without incurring delay of some sort. In digital systems you can have a constant group delay (=linear phase), but that would mean adding significant delay to everything that goes through the system. Doing it like an analogue filter gives a variable group delay but it's smaller and proportional to the amount of EQ adjustment you apply (minimum phase).
Ahaha... soo, from that I think I understand that with a digi EQ you get a delay on the whole spectrum, with analogue you get a delay only on the freqaffected by the EQ.
I will check the manual on my digi EQ and see what kinda insertion delay it gives.. can't be much (I certainly cannot tell the difference).
No, a digi eq can do it either way and I suspect it would choose to do it the same way as an analogue eq otherwise the constant delay would be too much for live use. But of course each manufacturer can make their own choices.
