If you’re gonna read a book then Robert Harley’s Complete Guide to High End Audio is a far better place to start. Its not that the other one is bad, its just I find understanding concepts works a whole lot better in the long run than memorizing platitudes. The difference is my way you can actually build a music system and not just type word salad.
Like fibbo. Yeah Fibonacci, you looked it up. Did you find anything useful? Did the word salad typer have anything useful to say? No. Word salad.
Let me explain why it matters, so you will understand, and be better able to position speakers and do all the other stuff that matters.
Sound travels in waves of different wavelengths. Which in a room is a problem, because sound keeps hitting the walls and bouncing back. Which if this happens with short frequencies like treble no problem we can disperse it or absorb it pretty easy. Because the wavelengths are short the stuff that will diffuse or absorb can be small. No problem.
Lower down though, the wavelength can be longer than the room. The wave hits the wall, bounces back, reinforces itself. You get what is called a room mode. Where this happens the bass will be really loud. But it can also cancel. Where this happens the bass can be almost totally cancelled to nothing.
Got it? So far we’re just talking like its one way. But its three ways- length, width, and height. So what’s the worst room? A cube. 12x12x12 or whatever. Doesn’t matter. 20x20x20. Whatever. All those duplicate dimensions result in the same mode and the same null and the only thing different is the frequency.
Knowing the physics you can sit down with a piece of paper and map or graph out the various length, width, and height room modes for any given room. Then plot them out and see. And oh, guess what? There’s actually a chapter in Harley’s book on this.
So anyway, you do this enough times for enough rooms and eventually some smart alek says hey the room with the smoothest most spread out modes follows this fibonacci sequence where the dimensions are fibonacci ratios of each other. Only nobody ever gonna build a room like that, because its like fractions of an inch difference, you just want to avoid stuff like 8x16x24 which you would know because I just explained and now you know all those are multiples of each other.
You see, I hope, the difference between information and word salad?
Like fibbo. Yeah Fibonacci, you looked it up. Did you find anything useful? Did the word salad typer have anything useful to say? No. Word salad.
Let me explain why it matters, so you will understand, and be better able to position speakers and do all the other stuff that matters.
Sound travels in waves of different wavelengths. Which in a room is a problem, because sound keeps hitting the walls and bouncing back. Which if this happens with short frequencies like treble no problem we can disperse it or absorb it pretty easy. Because the wavelengths are short the stuff that will diffuse or absorb can be small. No problem.
Lower down though, the wavelength can be longer than the room. The wave hits the wall, bounces back, reinforces itself. You get what is called a room mode. Where this happens the bass will be really loud. But it can also cancel. Where this happens the bass can be almost totally cancelled to nothing.
Got it? So far we’re just talking like its one way. But its three ways- length, width, and height. So what’s the worst room? A cube. 12x12x12 or whatever. Doesn’t matter. 20x20x20. Whatever. All those duplicate dimensions result in the same mode and the same null and the only thing different is the frequency.
Knowing the physics you can sit down with a piece of paper and map or graph out the various length, width, and height room modes for any given room. Then plot them out and see. And oh, guess what? There’s actually a chapter in Harley’s book on this.
So anyway, you do this enough times for enough rooms and eventually some smart alek says hey the room with the smoothest most spread out modes follows this fibonacci sequence where the dimensions are fibonacci ratios of each other. Only nobody ever gonna build a room like that, because its like fractions of an inch difference, you just want to avoid stuff like 8x16x24 which you would know because I just explained and now you know all those are multiples of each other.
You see, I hope, the difference between information and word salad?