Quote:
Originally Posted by DanDan  Thank you Paul, looks like a good workout there. Plus some very interesting side issues. e.g. the varied impedance corner arrangement. I will take some time to it later. However I did go straight to the good stuff as you suggested. There is indeed a 'mystery' path which would not be obvious to the eye or intuition. The path would be of great interest to a Snooker pro  . However, it is a third bounce, likely to be of very low level, and it doesn't end up in the mix area.
Those graphs mumblesound linked to are simple and clear. Not at all like the IMHO difficult to view 'haircuts' we see in our typical hovels.
DD |
Yes, they are simple and clear, but that is by design. In a space retro-fit, like most of our spaces, it ain't so clear.
My room is not tiny (2,500 cubic feet) but it is narrow. It's almost as tall as it is wide. It's a weird room. I am fairly confident that there are reflections at work that would be very hard to find with a mirror.
There is one thing about this that puzzles me.
We keep talking about first, second, third reflections and how early or late they are arriving to the listening position. In all the tests that I know of, there is a single impulse that is used to determine when they arrive and at what levels, correct?
Music is far from a single impulse. It's pretty relentless in that way. Who's to say that the third reflections aren't effecting the second or first reflections, even if they are lower in level by themselves.. in a vacuum.
This is going to sound stupid, but.....
You know how the song "Row, Row, Row Your Boat" can be sung by an infinite number of people all starting out at different points in the song? Imagine 4 or 5 people in an anechoic room singing that. Depending on where they are standing in the anechoic room, the 3rd person that starts the song could trample all over the first or second person.
That is for 4 or 5 people singing the same thing, just starting at different times.
Now replace all of those people with 4 or 5 identical bands (a band like a musical group). Drums, bass, a couple of guitars and a vocal or 10. 4 or 5 of these bands in the same room, all playing the same song, but starting at different times.
Things could get pretty messy.
I get the Haas effect and RFZ, but it seems like something is missing from the big picture when we base all of our facts about how reflections effect a room (and, ultimately, the original signal) when we are just using a gun shot or a sine sweep.
I'm on Dayquil and I can't breath out of my left nostril, so if I'm making an ass of myself, just ignore me.