I suppose some may use the LFE LPF to eliminate the potential of localizing bass above 80Hz. I don't really know any other reason for it, but some processors put it there... I suppose thinking some might find a reason for it. :huh:Regarding the LFE bandwidth, just because you set your subwoofer crossover at 80hz doesn't mean your sub automatically isn't still getting the full LFE channel. Processors with a richer feature set usually give you fine control over the LFE channel, and by default, they tend to feed the sub the full signal regardless of your redirected bass crossover point. You can reduce the bandwidth of the LFE channel if you desire in stated processors, but why would you?
There can be quite a bit of bass in the LFE channel from 80-120hz assuming the scene calls for it.
For me... I am not worried about bass localization because I have subs all around me... creating much less sense of localization.
I am looking... maybe I can find a solution.If you can find my old disk it has the LFE from 1-20Hz in one hertz increments, and then 25-120Hz in five hertz stops. All other 5. channels are 20-120hz in five hertz stops.
I have popped out custom test signals in raw ac3 for computer playback with multi-tracked tones, but I don't have any links.
I could run you some myself, if I ever get that computer back up and running again. Anyone with a old spare ATI 9800 Pro 256MB, or better AGP x8 card laying around unused?