My Loverlly GFX card

Originally Posted by Pierre-Marie Baty

The human eye samples its world 15 times a second ; you could eventually play a game at 20 fps and not notice any lag, or very little.

hmm, I really think it's not 15 but 25 fps. That's the number of frames delivered by television or cinema.
But the more fps you get, the more fluent is your game. It's very difficult to play with 25fps, much easier with 100fps

[@$3.1415rin]

no, I think pierre is right with 15-20, television is @25 full pictures per second. but you cannot compare those values. On TV you have movement blur and those effects, therefore we don't need 60fps. but with a videogame it is different : you have no blur there, just sharp pictures. to have smooth movements, the human eye needs more frames per second. and I guess nobody doubts that 60fps looks better than 30 or even 20

[Pierre-Marie Baty]

It's the Shannon theorem...

Any information digitally encoded that is to be used without loss has to be sampled at TWICE the sampling rate of the system using it.

This is to prevent signal loss due to filtering.

That's why our digital audio is sampled at 44kHz, even if the human ear rarely goes beyond 20kHz. That's also why the PAL TV standard goes at 30 fps while the eye samples at 15...

On some LCD monitors the LC latency induces a form of filtering between two frames ; that's why I have been able to play CS at 15 fps without noticing much frame skipping. On CRT monitors though, it is different and I would probably have needed 30 fps to play correctly. Anyhow, above this value is luxe only...

[Onno Kreuzinger]

hi
it is 10 frames per sec., pal is 25 so 15 would not work (cinema movies are at 24, and one mpeg standart is defined at 23,89..)
also tv uses interlave, this "enables" the human filter in your brain, which puts those half frames together. thats why viewing tv makes you faster tiered (you eyes).

when you get tired it gets slower, close to 6 frames/sec, you can test it with avi's, before you go to bed you will be able to view movies at 18-20 frames/sec without noticing. this also lead to "how long is a moment", according to studies one moment is about 1,5 seconds when you are fit, and it goes up to 3-4 seconds when you get tired. but that is psychology... :-)

the human eye samples at 120+ fps, but due to the size of our brains we are able to blend the images.

[Pierre-Marie Baty]

Originally Posted by Ava3ar

the human eye samples at 120+ fps

Where did you take this information from ??? o_O

[TruB]

that could be possible.. since you can see if the fps is low.. yeah i know digital.. but anyways..