Originally Posted by Originally Posted by dragonfyr
I could post the domain map showing how all measurements in both the time and frequency domain are related and how all are but various perspectives on the same unified 'thing' - the "Analytic", but the last time I did that Ethan claimed it made his "head hurt". And we certainly don't want that!
So, maybe this will help one see that similar direct and indirect reflected signals that arrive at different times combine (the proper term is: superpose) destructively, resulting in polar lobing and comb filtering.
And that by addressing the later arriving signals in the time domain, that the quality of the frequency response and of the subjective experience can be improved.
But by adjusting the frequency content by EQ, you CANNOT change the time relationship of variously arriving direct and indirect signals! (And EQ ONLY works in the region below about 80 Hz as the particular wavelengths involved are within 1 cycle of each other in time - a condition referred to as 'minimum phase'). This is NOT the case with specular reflections where the signals are non-minimum phase.
I could post the domain map showing how all measurements in both the time and frequency domain are related and how all are but various perspectives on the same unified 'thing' - the "Analytic", but the last time I did that Ethan claimed it made his "head hurt". And we certainly don't want that!
So, maybe this will help one see that similar direct and indirect reflected signals that arrive at different times combine (the proper term is: superpose) destructively, resulting in polar lobing and comb filtering.
And that by addressing the later arriving signals in the time domain, that the quality of the frequency response and of the subjective experience can be improved.
But by adjusting the frequency content by EQ, you CANNOT change the time relationship of variously arriving direct and indirect signals! (
And EQ ONLY works in the region below about 80 Hz as the particular wavelengths involved are within 1 cycle of each other in time - a condition referred to as 'minimum phase'). This is NOT the case with specular reflections where the signals are non-minimum phase.