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Frequency waterfall charts of a few familiar favourites - Page 6

post #151 of 531
6/23/04 at 8:26am
Ok it's a done deal and i just looked @ the trailer from what i saw you are right about the photography.

If anyone intersted in the trailer click HERE!
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post #152 of 531
6/23/04 at 8:26am
Ok it's a done deal and i just looked @ the trailer from what i saw you are right about the photography.

If anyone intersted in the trailer click HERE!
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post #153 of 531
7/20/04 at 6:28am
Hi all

I ask you pardon my ignorance here, but what sub woofers are you guys using?????

I'm interested in a new one but I’ve been looking at the Specs, for say, the Top of the Line Velodyne, or SVS or HSU etc. but they all seem to say they will only play from about 12 Hz and up???

How do you guys then get these 'Sounds', if you'd call them that, at 4Hz????

Or is there something I am not understanding about how these Sub’s work and how to read their spec sheets?? Or am I looking at the wrong Subs, do I need to make my own??? Or is there something else you are using to feel these ultra low ‘sounds’?

I’d much appreciate you response and help

Cheers
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post #154 of 531
7/20/04 at 6:56am
Kaj, these waterfall charts are sourced from the DVD, not from the subwoofer output. Whether the subwoofer can actually faithfully reproduce these scenes is another matter entirely.

The amount of source material in the 5-15 Hz bandwidth amounts to a matter of seconds on a handful of DVDs. If your subwoofer can't reproduce this bandwidth (and most can't), I wouldn't worry much about it.

If you really do want to reproduce near-DC to 15 Hz cleanly at realistic volume levels, it will cost you. I think you are looking at a case of diminishing returns, though.

I think if your sub can do 15-16 Hz clean and strong (say maybe 105 dB at the listening position @ 10% THD or less), you're in good shape to capture nearly all of the useable infrasonic content on today's bassy DVDs.

Regards,

Ed
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post #155 of 531
7/20/04 at 1:41pm
Edward's got that right, Kaj! I've got significant output somewhere under 16 (have not been able to really measure it properly), but at those freqs, it's more of a fluttering pressure than a sound. Any sound you DO hear is coming from the induced vibrations and rattles from your house!
Gordon
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post #156 of 531
7/20/04 at 2:22pm
Kaj, I'm using a DIY Tempest in 290L tuned to 17/18Hz. I used to get more of the BHD "Irene" (@5Hz) effect before I blew a channel on the receiver I was using (didn't have a rumble filter) and switched to a Parts Express plate amp (with rumble filter). I have yet to hear the final cannonball "rip" (@12Hz) from Master & Commander that Ming posted. There's really not much need to have significant output from your sub below 15Hz or so (unless you "need" the "cool" factor).

JKS
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post #157 of 531
7/20/04 at 3:05pm
got ya

I just thought that some of you guys are actually getting your subs to play at 4Hz. that's what threw me as i thought it wasn't really possible, well not to the mainstream market anyway.

And the Charts show what is encoded on the DVD, if the sub can play it or not is a different thing.

So if i can get a sub that can play strong at about 12Hz -14Hz, i'd be sitting ok.


thanks for the info, and keep those charts coming
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post #158 of 531
7/20/04 at 6:16pm
Thread Starter 
I got my 16-46+ twins down to 12hz. Measuring on a RTA, I get useful extension down to 11hz, but by that time, my room ornaments and window panes will be rattling like crazy.

Useful extension down to 16hz would capture most of the useful and enjoyable bass from today's movies. Thats why my twins are back to stock 16hz tune.

Say hello to headroom!
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post #159 of 531
7/21/04 at 12:55am
Ming,

Regarding the Master and Commander chart, which version of the disc is this? I have no cannon shot at 14:05, the nearest being a single shot at 14:12, followed by a few broadside shots in close succession a few seconds later, then finally the 'Silence on deck' at 14:22 as they pull into the fog bank. Further, the shot at 14:12 isn't anywhere as impressive as numerous shots earlier in the sequence, which makes me wonder if my time readout is somehow screwed up, or I have a different version of the disc?

In any case, the whole sequence starting from the first shot of the Acheron is quite impressive, and there definitely is a lot of sub 20-Hz information to be had. This is one area where home theaters can really shine, in my opinion. I saw this movie in the theater, and the bass was nowhere near as impressive - nor the surround integration, for that matter. This DVD is certainly among the best for true deep bass.

My subwoofer is tuned to 11Hz, and coupled with room gain, is only down a few dB at that point, so it's nice to see more movies making use of the subsonic frequencies.


Aaron Gilbert
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post #160 of 531
7/21/04 at 2:04am
Thread Starter 
I realised that the time stamping can vary between disc from different regions. PAL speed-up may be one of the reasons. The other reasons may also be due to starting trailers identifying the studios and distributing houses, as well as warnings in different languages. Even the timing accuracy can vary between DVDPs and PC-based DVDP. Even special edition, collectors edition and different batches may have different time stamping due to insertion/removal of trailers, FBI warnings and similar.

I used the DD track of the NTSC R3 version of this disc. Don't fret on the precision of the time stamping.......

My gut feel is that the last shot thru the air is so low that we may not always feel its as impressive as the heavy broadside barrage a few seconds earlier. Nonetheless, the sound of cannons blasting away with sufficient force in the infrasonic region will put this starting sequence on my list of "bass demo scenes" permanently.

70% of the cannons shots are mighty impressive AFA infrasonics are concerned.
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post #161 of 531
7/21/04 at 2:05am
Re Master & Commander

I checked my R4 release and at 14:02 Russell crow says "No Shouts No Calls", and there is a sound of a single cannon shot and the shell flying through the air.

Is this the sound you guys are talking about?
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post #162 of 531
7/21/04 at 2:09am
Thread Starter 
Quote:
I checked my R4 release and at 14:02 Russell crow says "No Shouts No Calls", and there is a sound of a single cannon shot and the shell flying through the air.

Is this the sound you guys are talking about?

Yep thats the one.

In a way similar to BHD's 5hz harmonics, this 11hz info may not be as impressive as that of other bass scenes.
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post #163 of 531
7/21/04 at 2:49am
Thanks Ming...

Yes I love the way the subs driver does is slow dance routine in BHD
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post #164 of 531
7/21/04 at 7:34am
Quote:
it's nice to see more movies making use of the subsonic frequencies.


I love it my it too! I hope sound engineer's continue to utilize subsonic frequencies more with dvd releases.
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post #165 of 531
7/22/04 at 1:25am
I didn't see it mentioned anywhere before, but what about Dr. Chesky's Magnificent, Fabulous, Absurd & Insane Musical 5.1 Surround Show.

I'm suprised no one has tested it yet, it even warns you on the cover to turn down your Sub(s)

especially tracks:

6. The Storm
9. Music for Cello, Helicopter and Cars
26. Organ & Chimes (my subs can hardly, if at all do the last cord of the organ!)



it's the ultimate in bass i've ever heard so far! and for the surround it's awsome as well!

i'd love to see this tested and analzyed!

Chesk'y Surround Show
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post #166 of 531
10/11/04 at 9:13am
Thread Starter 
Guys, just wanted to mention:

Having just got "The day after tomorrow" DVD, I immediately popped it into my DVDP and devoured it in all its sonic glory. So we would be expecting tons of bass right?

Well, the movie has bass, and tons of near infrasonic bass. But, the on-screen action gets very little of those deep stuff. The really deep stuff comes more in the form of sonic cues to add suspense to the movie. Let me try to clarify:

Tornadoes ripping thru LA - some deep stuff.
Music in opening credits - more deep stuff than the tornado sequence.

Somehow the deep bass manifest as part of the musical soundtrack than the action soundtrack. Great audio, fantastic PQ. (although there is a blue video bias to complement the bleak situation to come)

EDIT
The deep stuff is scattered everywhere in this movie. Holler if there is a particular scene thats worth plotting.
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post #167 of 531
10/11/04 at 10:29am
In the movie theater the sub made a lot of noise, so i figure wants it hits dvd it should be something special. Oh well thx for the heads up Ming. i will pick this one up any way.
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post #168 of 531
10/11/04 at 10:41am
Ming,

Don't forget to check the last James Bond flick (Pierce Brosnan) too; is got some terrific low bass scenes!

Now, I know you're a fellow SVS bassaholic ...and that you use 16-46s for your pleasure...but where did I get the idea you were using three of them instead? I believe you are actually using two, am I right? :b

I'd love to be able to produce such waterfall charts like you guys are doing as well!

Man...one of these days I get the 16-46 octet and B4-Plus twins properly calibrated and EQ'd. That would really be something, methinks... :wink:

-THTS

"...hi, my name is Frank...and am an SVS bassaholic..."
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post #169 of 531
10/11/04 at 11:28pm
I am interested in using the Spectrum Lab software which has been mentioned here. Is it possible to use the cd/dvd drive in the pc rather than an external source? I am currently using the Echo Gina for the soundcard. Also, I noticed that the spectograph is rahter slow. Is there any way to speed it up through settings. What settings do I need to post compatable screenshots?
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post #170 of 531
10/15/04 at 5:08am
Quote:
Holler if there is a particular scene thats worth plotting.



I played around with this flick last night, and Ming you are dead on on your observation.

I have 2 requests.

-Please plot the 1st chapter w/ opening credits with the deep subsonic bass that hits every 10 sec.

-Please plot chapter 14 when the ocean comes over Paris Island, and into New York.

Thx buddy.
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post #171 of 531
10/15/04 at 6:29am
Quote:
Holler if there is a particular scene thats worth plotting


This may be the lowest scene in the film...IMO

When the ship is going downtown, the rumbling starts as it scrapes across the building. The lowest tones came from hitting the bus underwater.
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post #172 of 531
10/15/04 at 8:13am
Thread Starter 
I'll try to plot these 3 scenes over the weekend.
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post #173 of 531
10/15/04 at 11:05am
Quote:
I'll try to plot these 3 scenes over the weekend.



Thx Ming, can't wait!
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post #174 of 531
10/15/04 at 3:23pm
-Please plot the 1st chapter w/ opening credits with the deep subsonic bass that hits every 10 sec.
__________________________________________________ ___

I think that very well might be the lowest Terence? A plot would be great.

>>>When the ship is going downtown, the rumbling starts as it scrapes across the building. The lowest tones came from hitting the bus underwater.<<<<br />
Loved that scene and the bass was superb. Thanks MingL
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post #175 of 531
10/15/04 at 4:12pm
Ming

Will be interesting to see which scene is lower
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post #176 of 531
10/15/04 at 7:55pm
Quote:
I think that very well might be the lowest Terence? A plot would be great.



Steve, Keith, from in my veiwing in my room, the opening chapter tends to be the lowest. We will see soon enuff.
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post #177 of 531
10/15/04 at 9:07pm
Steve, Keith, from in my veiwing in my room, the opening chapter tends to be the lowest. We will see soon enuff.
__________________________________________________ ___

Most likely the lowest Terence, but would you not agree that the scene Keith mentions is the funest? Pretty nice special effect. Incredible view.
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post #178 of 531
10/15/04 at 10:32pm
Just rewatched both scenes, the opening and the ship...
it's pretty damn close, like you said...we'll find out soon enough.
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post #179 of 531
10/17/04 at 12:33am
Has anybody run sweeps on the Telarc 1812 cannons yet? It would be interesting to see where most of the energy is.
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post #180 of 531
10/17/04 at 5:22pm
Jeff,

The Telarc 1812 is one that SVS has up on their site:

HERE

JKS
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