I am very curious to know more about how Audyssey corrects the time domain, which is said to be one of its advantages compared to other equalizing techniques.
I am not 100% into the math of FIR filters, but as far as I've read, it is possible to create filters without any kind of phase shifts compared to the theoretical phase distiotion of high Q IIR filters. If we take aside the number of correction points and the frequency response, what exactly does Audyssey do compared to conventional EQ? Can it take the delay as a function of frequency and correct the arrival of frequencies according to a measurement which includes the time domain?
Lets say you have much reverb time at 40-60hz in your room. Apart from correcting any dips/peaks like a conventional EQ, how does Audyssey handle this? Sorry if I sound sceptical, but it does not make sense to me, that it is able to handle reflections in the room. When the sound at a certain frequency "leaves" the speaker, Audyssey cannot do anything to it. So reflections caused by this sound, is not in the hands of Audyssey anymore. The only way to lower these reflections must be to lower the output of the certain frequency coming from the speaker.
I hope my question makes sense, and I'm looking forward to an answer.