markus
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You mean "linear" as in "linear time-invariant"? That's what rooms, electronics and even "wobbling" SVS subs (largely) are.
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Active Room Treatment (ART) by Dirac
- Thread starter Flak
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Yes! They are as long as you don't drive them to hard.
What happens quickly when you aim for loud home cinema! (or very loud - ATMOS reference level) You need very capable woofers when you calculate your levels with very deep tunings when ported.
napfkuchen
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(Un)fortunately (?) my neighbors are still far from the necessary reference level (dead and/or deaf), so the comfortable listening volume is usually around 80 to 90 dB SPL. Thanks for all the answers, I'm wobbling now.
(be sure to get the ATMOS edition, it's a good experience)I like the dialoge about 65dBSpl. So it's easy to hear but everything is not too loud.
Someone here did a SPL recording of cinema sound and dialog was at 75dBSpl and loud effects at 105dBSpl - that's exactly ATMOS reference level.
So you can expect 30dB dynamics from speech level -> 95-100dBSpl ist still the level your speakers have to produce at the listener in your room. And woofers should be able to do 10dB more? At 20Hz ...
Someone here did a SPL recording of cinema sound and dialog was at 75dBSpl and loud effects at 105dBSpl - that's exactly ATMOS reference level.
So you can expect 30dB dynamics from speech level -> 95-100dBSpl ist still the level your speakers have to produce at the listener in your room. And woofers should be able to do 10dB more? At 20Hz ...
Vacceo
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Listening above that in a sustained way will probably hurt you. THX spl reference volume is 85db with 20 extra db for peaks, so your current pressure seems quite adequate.(Un)fortunately (?) my neighbors are still far from the necessary reference level (dead and/or deaf), so the comfortable listening volume is usually around 80 to 90 dB SPL. Thanks for all the answers, I'm wobbling now.
The Dolby LateNight mode may suit you well!
Nah - my woofers are sufficiently dimensioned and "housemates" are brave ;-)
But I really don't understand all the whining about dialogue and dynamics when every BD player or amp can help with that.
Dynamics is the ability to instantly go from quiet to loud or back... which is what all amps do (or are supposed to!)
BD players - provide a direct feed of the recorded channels for your AVR to then process.
Not sure what you mean about a BD player being involved in dialogue?
You can restrict dynamics with dolby night mode in every BD player and Receiver I know. It's just named differently sometimes. And many people don't know about it
In the AVR, late night mode is only available when loudness management is enabled... and unlike previous generations of "loudness" features, it appears to work differently, and there is little documentation out there telling you what it does exactly...You can restrict dynamics with dolby night mode in every BD player and Receiver I know. It's just named differently sometimes. And many people don't know about it
This might provide a hint:
Loudness Guide | Media APIs | Dolby.io
Guide to loudness concepts for LUFS and LKFS used in media standards and dplatforms such as ITU-1770, Apple, Facebook, Spotify, SoundCloud, Vimeo, YouTube, etc.
From that Dolby Page:
Dolby Dialog Intelligence is a technology that detects speech/dialog, extracts it and measures the extracted speech using the ITU-R BS.1770 algorithm. It is an industry-proven method for dialog/speech loudness measurements. The process of using an algorithm to extract and measuring the loudness of the speech, is commonly referred to as a speech-gated loudness measurement. This is compared the BS.1770 measurement which employs a relative-level gated or level-gated loudness measurement which only measures the "loudest parts" of the program.
The program loudness and dialog loudness measurements are based on the entire program/media and meant to provide an estimate of the loudness for the program/media as a whole. Short-term loudness is another loudness metric based on BS.1770, but using a 3-second window instead of the entire program and a relative-level gate is not used. It provides more of a localized measure of loudness in the program for the time the short-term loudness is measured, and defined in recommendations.
Loudness Range (LRA) is often use dto gauge the dynamics off a program or media. It is a statistical metric based on the short-term loudness values of the program, and meant to give an indication of the range of loudness a program has measured in LU.
This is useful in cases where media has multiple components, say background music and dialog. It's reasonable that a human listener would expect loudness of the dialog to be the anchor of how loud media is judged to be.
So I think that loudness + late night might be doing a lot more than just compression...
Wouldnt it be more efficiently to use MSO prior to Dirac ART? I would assume, you could harmonize your dips and nulls more effectively with MSO and using afterwards ART? At least this is what I experienced so far.
tjcinnamon
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In my option in yes. But perhaps dedicate a single sub to purely “support” duty depending how far down your mains go.
Am I correct thinking - with ART settings being -24dB max support setting that means it would play opposite polarity sound at certain lower output so the outcome would be cancelled sound by 24dB?
So would that mean it would be good to have lower output subwoofer closer to you that could perfectly handle those duties like KEF kc62 since it doesn’t need to match output to main bigger subwoofers?
So would that mean it would be good to have lower output subwoofer closer to you that could perfectly handle those duties like KEF kc62 since it doesn’t need to match output to main bigger subwoofers?
No, Dirac Live Bass Control would be the better solution.
azzy_mazzy
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from my understanding that value is for the algorithm to suggest how much it should be using a certain support group and doesn't directly translate to dB levels.
-24dB being the highest support whilst -6dB lowest The only way it would make sense is this being a target of how much SPL it will try to cancel using the support group. From what I’ve seen ART won’t cancel the sound entirely but lower its level to the point you won’t hear it. Otherwise they could use ambiguous low medium high levels of support.
azzy_mazzy
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that would make sense but in their documentation they do use it as "ambiguous low medium high levels of support"
here they are if you want to read them and come to your own conclusion
In this guide they specify:
Controls the amount of support the speakers in this groups gives to the main speaker.
-1 dB will contribute a minimal amount, -24 dB will contribute a maximal amount.
Default is -18dB. So that would be strength of cancelation. Hence coming back to my original question - since some already indicated first sub gets LFE and rest are doing support work (not dissimilar to current DL bass management) - having small capable subwoofers (kc62) close to you (<1m) might perhaps do the trick? They would have enough output to handle -18db under 80Hz (and remain non localizable, since Dirac mentions close support speakers should have a lower level setting)
I am with you - after reading all the ART threads and other information available, no clue whatsoever as to how it that going to work for my system. I guess that is just what is out there and there won't be much more. Many people are trying to adjust their systems for ART support but I have no idea on which basis are they doing that.
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