just so you know..This disc appears to have mix issues with the sub channel. I'm into track 5 and I've heard stuff way above 80 hz on at least three tracks. There's full range bass on a couple of tracks so far, and Short People has bass drum, some toms, and some other leakage too, again above 80 hz. That said, my player is indicating LFE rather than sub, but the above is coming out of the sub's analogue out, no bass management on the player.
Blimey! :yikesjust so you know..
Steven Wilson's "The Raven That Refused To Sing" and "4 1/2", and Nine Inch Nails' "The Downward Spiral" also feature full frequency range content in the LFE channel.
I noticed this recently while looking at foobar's spectrogram. So I listened to the LFE channel by itself playing back through my front speakers and it really is full range (though the content was relevant to the LFE: bass drum, electric bass, etc...)
*I'll show myself out now..
I think it's either oversight or... some kind of "purist-audiophile-here-don't-mess-with-the-signal" kind of thing.Blimey! :yikes
In the words of Marvin Gaye (don't show yourself out, I mean! ) ; "Please stay.. Don't go away, baby"
Seriously, you need to stick around, ji eff! Please
I'm clearly missing a trick here - what's the point of putting full range stuff in the LFE channel if the sub can't resolve anything but low bass..?
The tech specs of my "trusty" old REL (though far from the best for movies, seems its ample for music in my shoebox.. and since fixed just will not die! I want a new BK Gemini, dognammit! Die REL, Die..! Err.. where were we? ) oh yeah so REL said/say its' frequency response is 25-120hz.. so I guess that's all it can pump out, right?
If so, whats the frequency, Kenneth? ..and why put full range content in the LFE channel if nobody ever gets to hear it either, Ken?
The Pet Sounds DVD-Audio does this too, fwiw, with all sorts of stuff in the .1 channel (and the Centre, too!) its v.spooky.. anyway, sorry for carrying on the OT tangent, maybe all this useful chat could go into a dedicated thread please, Jon? Tim? Feels like it warrants it doesnt it? Unless its all been covered before in another thread maybe? Lets have a sticky debate! :banana:
There didn't seem to be a roll-off slope at all... but I believe you might be right on point with the phase issue. :upthumbFirst of all, a spec that lists a frequency response of 25-120Hz is not a brick walled kind of affair. That probably refers to the +/- 3dB roll off points or something similar. There may still be audible output up beyond a few 1000Hz. It depends on the slope of the roll off. Also back in the day, signals subjected to analog frequency manipulation always had some amount of phase shift as a side effect. Maybe this is no longer the case with digital frequency manipulation. So it could be the purist idea, why mess with it if it has a possible downside (especially if the filter for the LFE is accomplished in the analog domain).
Are you all sure that what you are hearing simply isn't signal that is part of the crossover slope? is it much reduced in volume compared to the signal in the FL and FR?
I gotta admit, I never listen to any isolated channels on my system. A lot of you seem to do that. Isolated sub, isolated center, isolated rears.
That sounds like a very shallow filter - that's just over four octaves from 120 to 1000Hz, isn't it?First of all, a spec that lists a frequency response of 25-120Hz is not a brick walled kind of affair. That probably refers to the +/- 3dB roll off points or something similar. There may still be audible output up beyond a few 1000Hz.