SERIOUS food for thought, The Vegas "sound"

PipelineAudio wrote on 8/7/2001, 5:39 AM
First some background, three years ago, I ran a studio here where we had the best mic collection I've ever seen, SSL, Trident, and Neve consoles, all the killer mic pre's you could think of, and tons of good outboard, like Pultec EQ's, LA-2A's, Eventide H3000, the works. For tape, we had Studer A-827's, Sony PCM 3324, Ampex MM-1600, and Mitsubishi DASH. As luck would have it, my favorite engineer of all my favorite albums worked there from time to time. Three years ago, the studio owner and I had some differences, and I started building my own place.

My studio is very very modest in comparison. Now I compete with the studios I only could laugh at back at the last place. I have tried to get the maximum bang for the buck in each and every bit of the studio. The signal path from the mic to the tape recorder has gotten the most attention, with all details agonized over till I could find the best compromise. Next was the accoustics. I am very proud of my control room, and think that it can hang with anything built in the under 500,000 $ range, and it probably cost $2,000.

Of course, with my budget, I couldnt get an SSL, or a Neve, nor a Studer. What I was able to afford was a set of tascam dax8's and a soundcraft ghost console. I'd be DAMMNED if I had to mix on that console I thought! I already had some good experiences with sound forge, so when vegas came out, EXACTLY at the right time, I knew this would be a way to stay off of that ghost. I had already run the gamut of cheap audio apps, from cubase, to cool edit, to logic, and all were lacking. Seriously vegas came for me in the nick of time.

After a few mixes on vegas, I was able to get albums, that in total sounded much much better than anything I was able to get on the studer/neve combo. I say " in total " because the sound itself certainly wasn't as *hi-fi* as at the last place, but the control I now have gave me soooo much new power. Gone are drums played out of time, yes it takes a while, but every drummer comes out of here sounding like a clock, not in a dead quantized way either, just fixing the inconsistencies and such. Oh, the control! Tom-toms, always the scourge of my existence, trying to make them loud enough, yet not have the cymbals bleed through, was a pain and never really right in the old days of gates, trriggering and such, always a NASTY compromise! Now I can just edit out everything BUT the toms, time consuming, but what a joy when its done! You know the rest; easy to fix timing of guitars, places where drums and other instruments dont hit at the same time, FIXED! Doubled vocals not tight enough together? FIXED! Pitch problems that otherwise were a kickass performance? FIXED!

Sure, vegas has crashing problems, routing problems(big time), and lacks phase switches and you have to MOUSE AROUND EVERY RIGGIN FADER!, but all in all, where it all counts, it rules! Nowadays when I take my mixes to the mastering lab, the same guy Ive been using for 8 years, he is surprised EVERY time, by the quality of my mixes! In the old days, we would labor over some things that a traditional mixer/tape recorder just cant fix, now we get one song dialed, and the rest fly pretty quick. CONTROL and consistency! So far so good!

Now, back to my favorite engineer hero. I have been out of the loop so to speak, ignored by the record companies I used to deal with, since I started building my own studio. Chance smiled upon me and one of the records I mixed landed on his lap! He called, asked me to send some other projects I had done, so he could see if I was still capable of delivering product up to his standards. He must have liked what he heard, cuz he gave me yet another step up, he brought a band in to do a demo, and decided to just observe, and not take an active part, testing me pretty much.

Now I havent seen him in three years,and when he stepped into my new studio, he saw just how modest things were, but realized everything was sensible, and as it should be. Tracking went well. Then I dumped the tracks into vegas to mix. Heres where it gets nasty.

Of course I had about 50 of the obligatory vegas crashes in the first 3 hours, but after that, not so many. Having him here made obvious something that had always been brewing in my mind( not that he said anything ). I think he was happy with the overall product, well see if and when I end up getting to do the album! But here it is, THE "vegas sound":

If a track was at 0db nothing on it in anyway, busses at zero, etc... and soloed, it seemed to sound just as it had on tape. I should say that I use soundscape mixtreme TDIF cards, so ALLEGEDLY if the tape says 1000 1010 1111 0000 at a particular time, it will send the app 1000 1010 1111 0000 as well. hmmmm not so sure, but I hope. The problem is, that once the faders or pans are moved in any way, the sound is DRASTICALLY different. I know that this is the nature of digital audio here, but it shouldnt be THIS bad!

Even worse is when multiple tracks are mixed together, the stereo field seems mushed together, and looses a LOT of depth! This is probably the same general " smalleness of DAW sound " that you hear in everything from nuendo to pro-tools, yet I havent ever heard about in PARIS.

SF engineers, I would like to know if vegas is capable of " garbage in, garbage out" performance, that is not altering a file in anyway at the rendered output.

* If so, what console settings achieve this?

* It is well known, that if you want to use discrete outs, you MUST pan the tracks Hard left or right and drop them 6 db. Is GIGO performance still possible in this way? Also this is a BIG problem in vegas, that if you DO use these discrete outs per track, and also have an fx send from that track, the fx send will follow the panning of that track and COMPLETELY RUIN the stereo placement of that track for things like reverb

I have a hunch that lack of resolution may be to blame for the unfortunate signal degradation. This would be somewhat akin to " gain staging " in a traditional studio environment. How exactly are signals in vegas mixed or summed? I hear there is an internal resolution of 32 bits or 64 bits or whatever, but what about at each point?

At the point that the channel fader sends the track to the mixdown buss, what is the resolution? Could the fader be turning up or down in 16 bit steps, instead of the maximum internal resolution of the app itself? Or at all points is the resolution at its highest? If most of the signal path is carried out and edited at 16 bits, then this could EASILY be the problem of the collapsing soundfield!

Also is there a way that dither could be applied to the output of each fader, BEFORE it hit the mix buss? Could some settings in vegas cause each and every point in Vegas' mix architecture to be at a higher or lower resolution?

As for the direct-x plugs themselves, many have high internal resolutions, but what bit rate do they send and recieve? This could also be whats killing the sound!

Flame away, no doubt many will say how none of these apps should have a sound, that none of them DO have a sound. This may be true in theory, but not in practice. Also maybe we need to change our thinking about all of digital audio. Many times digital apps talk about signal to noise ratio, how it works tthe same in analog as in digital. IT DOES NOT!

In an analog singal chain, as the SNR drops noise is more noticeable, yet the signal is still the same, maybe with some losses in the extreme highs or lows do to tranfer loading, capacitors, or transformers, etc.. but it is still very close. In digital, quantization " noise" is higher at lower resolutions, but the signal itslef is now VERY VERY VERY different from the original.

Try it yourself. Turn down a fader on your analog console with the signal coming from vegas, zeroed out. Listen close. Now play vegas thru your two track outs or whatever, and turn down a fader in vegas. These two signals are now DRASTICALLY different!!!

What can we do? Maybe Im too anal, but thats me! What can we do?

Comments

RobSoul wrote on 8/7/2001, 10:43 AM
Anal.

Audio Engineer.

They both start with "a".

Coincidence? I think not.

What good is an engineer or mixer if he's not picky? I tried your test and I agree. There seems to be a slight difference in sound between using the fader on my O1V, and using the Bus fader in Vegas. However, I didn't notice as much of a difference when using the envelope to lower and raise the volume. (I did the test on a stereo music file.)

Of course, this was a non-scientific, non-blind listening test. For best results one guy should be listening and the other should be running the controls - and the guy listening should not know which is which.

And these differences to my ears are very sublte. Like, say, the difference between a listening test performed on an SSL vs. a Neve desk.

One item I wanted to mention to you...do your Tascam decks record at 24-bit? Becuase if you're dealing with 16-bit audio then you're missing a lot of fidelity. The biggest increase in fidelity comes when recording a mutli-track project all at 24-bits. When you're at 16-bit, the more tracks you add the more "cluttered" the sound becomes. At 24, things are a lot more wide open and full, if you know what I mean. They retain their "space".

I'm interested to hear SF's response to your questions...

Rob

RobSoul wrote on 8/7/2001, 12:23 PM
Oh, yeah...I forgot to mention. Vegas seems to crash abnormally often for you. Have you tried troubleshooting this?

Rob
PipelineAudio wrote on 8/7/2001, 1:58 PM
I am constantly trying new cards, pc's OS's, video cards, etc... Some have more crashes some have less. For my main mixing PC though, echo just released a new beta driver that says " fixes crashes with multiple CPU systems" this may be the ticket on this PC! I can only hope!

I can get a lot more/less crashes depending on where I put my promise ultra 66 controller card too.
Scary that a PC is supposed to do the same thing, the same way everytime, yet is so random and variable, maybe one day these kind of issues will be adressed by PC manufacturers.

I have no doubt that somewhere out there, is a PC that vegas runs perfectly on, yet may not suit my particular needs...
Rockitglider wrote on 8/7/2001, 5:10 PM
Hello,

I read somewhere that it does help to apply dither as the last effect at each buss going out. I use Settings (24 Bit, 1/2 Bit, Off) for general recording.
Seems to work pretty good.

See ya
PipelineAudio wrote on 8/7/2001, 5:26 PM
Dither will certainly help in the end, but I am afraid the sound gets murdered quite a while before that point.
In the signal flow diagram, I have to wonder about the resolution at each gain stage.
trockman wrote on 8/7/2001, 7:02 PM
I agree with what RobSoul said about you (Vegas) seeming to crash abnormally often. I use Vegas a lot for pro projects and I honestly can't remember the last time it crashed but it was many months ago and I think it was due to a rogue plug-in, from what I remember. For what it's worth. I use Win 98Lite (which ironically SF "doesn't support"). My system may indeed not suit your needs but it works well for me. In case it's of interest, it's a PIII/866 with 512MB RAM, a 75GB Deskstar and a 40GB DiamondStar. I use the LynxOne and OmniStudio/Delta 66 sound cards. Very key to not crashing is I also use DX 7 and Vegas 2.0d. I had very bad results with DX 8.0a and 2.0g. I also had to do a lot of work to get my numerous plug-ins to co-exist peacefully in Vegas. Tony
RobSoul wrote on 8/7/2001, 8:34 PM
Are you tracking at 16 or 24 bits?

Rob
jboy wrote on 8/8/2001, 12:28 PM
PipelineAudio-why dont you post your PC parts profile, maybe you've got some problematic components somebody's had experience with ?
PipelineAudio wrote on 8/8/2001, 1:06 PM
Crashing problems are across many different PC's, usually as the envelope and split count comes up.

Here is my personal system:

Win2k sp2
Promise UDMA66
supermicro p6-dbe
2 x PIII 700 @100mhz
384 megs SDRAM ( tried many different brands )
Many different hard disks by many manufacturers usually 3 in the PC
Many diferent CD ROM drives 1 at a time in the PC
Linksys LNE-100 LAN card ( also tried a few others )
Matrox G-400
Soundscape Mixtreme
Echo Gina 20
Midiman Midisport USB

worst crashes of all happen when I am using discrete outs thru the mixtreme to do submixes on a console
PipelineAudio wrote on 8/8/2001, 4:30 PM
but I digress, this isnt so much about vegas crashing, but more aboutits sound when rendering
axissport wrote on 8/8/2001, 8:18 PM
I find the opposite to be true.Vegas sounds cleaner than most of the apps I've used(Cubase/Logic).I think there are problems elsewhere in your system.Seriuosly if Vegas sounds so bad why not dump it and get PARIS or a digital mixer or something.You can get demos of other programs and see how they sound.I mean if you have problems with the sound and the stability why use it at all?
This isn't the first post I've read where you've complained, it seems obvious Vegas isn't for you?You seem to want motorized faders,vst support your unhappy with the sound and stability why are you using Vegas?I've never used a studer/ssl so I can't compare it to that but I have used a DDA console with DA-88 and Vegas sounds good.
PipelineAudio wrote on 8/8/2001, 10:12 PM
reread the post, I say this is a problem in all apps. Each has a sound, to me vegas is more " garbage in garbage out" then the rest, which is what I like. I far prefer the sound of vegas to logic for everything but vocals, and the only thing that I think sounds better in cubendo than vegas is drum overheads, but this misses the point.
There is a thinness which happens as soon as a fader is moved. Maybe the reason for this could be found, if we knew what the app was doing at each gain stage in the signal chain.
Are there different resolutions at different points?
Is dithering being applied in places where we cant access?
Things like this, we need to know, and if the product is better, more people will buy it, well get more plugs, everyone is happy.
Burying your head in the sand wont make anything better, and saying that there isnt a problem doesnt make it so.
wilkee wrote on 8/8/2001, 11:20 PM
I had to junk my G400 when using Vegas went to an Nvidia MX. I personally have not noticed any degredation of sound before any effects are added or a render is applied and I find Vegas to be very stable.
For the record I use
Abit Motherboard
AMD 1200 tbird,
2 x ibm 30 gb on a Highpoint raid array,(Striping)
Delta 1010 sound card etc.
On my home machine
Jetway motherboard
AMD 1200 tbird,
ibm 40 gb
delta audiophile
Both machines are solid as a rock even with DX 8.0a and 2.0g?
BUT IT IS THE SOUND THAT MATTERS AND THAT IS GREAT
PipelineAudio wrote on 8/9/2001, 2:21 AM
is the Nvidia supporting dual monitors? and runs ok in win2k?
gonna go check it out thanks!
Rahl wrote on 8/9/2001, 6:34 AM
Maybe you would want to try out Windows XP. It's still in beta form, but I have been using it for about a month now and it works awesome. You can get testers copies for 9.99$ on Microsoft.com... Try it out, it's the best windows so far... And Sonic Foundry appz work great in the operating system...
PipelineAudio wrote on 8/9/2001, 12:56 PM
I cant wait to try XP! What sound cards are you using with it? Are you using 98 style drivers or 2000 style drivers? How much more RAM do you really need to run it ?
billybk wrote on 8/9/2001, 5:00 PM
Like many people I am running WinXP(RC1).
It is a preview version good for six months.
You can download it from Microsoft for $9.99
or you can do what I did and order the CDROM
for $19.99. I have had it for 3 weeks now, I am still crash free( no BSOD's) and it has, at least for me, been the most stable OS yet. The install CDROM created
a dual boot for me, along side my copy of WinME.
Very nice indeed. I have the Delta 66 (WDM drivers)
and the Roland Audio Canvas UA-100 (USB) both devices
have the W2K drivers installed. I am not sure how much
ram you need, but I've got 512MB myself. I do not care
too much for the XP cosmetic interface, but you have
the option to use the so-called "Classic Windows" look
and then you feel right at home.
All of the Sonic Foundry apps except the Vegas Capture
Tool (it keeps asking for Direct8 or later on install,
strange thing is XP has the latest 8.1 already integrated into the OS) install and operate as they
should. SF will need to update the Capture Tool though.
Once XP is released I do plan on getting the upgrade
from WinME.

Billy Buck
trockman wrote on 8/9/2001, 9:08 PM
I noticed you listed a LAN card in your equipment list. I know this is a stupid question but I assume that you have that card completely disabled via a different hardware profile when you're doing anything audio?
PipelineAudio wrote on 8/9/2001, 11:04 PM
A long ways back, i thought the LAN cards could be a problem ,so on customers PC's I set up user profiles that excluded LAN, modem, and autoinsert notification of the CD drives> After some time, I noticed the crashes would occur either way, so I havent even thought about the LAN card. Is there a way in win2k to create separate hardware profiles as there is in win98? If so I'd like to try it.
Rockitglider wrote on 8/9/2001, 11:05 PM
Why do you have to disable NIC's when performing audio functions?

Rockit
PipelineAudio wrote on 8/10/2001, 12:30 AM
A packet (?) may come and the PC wants to devote attention to it.
Actually I know little of how the coding and addressing schemes actually work, but I just figure ANYTHING that computer might devote attention to besides your audio app may be a little frightening!
Foreverain4 wrote on 8/10/2001, 10:21 AM
Could it maybe be your soundcard that is coloring the sound instead of vegas? Just a thought. I have noticed somewhat of that "vegas sound" you were talking about earlier, but I am also running Cakewalk Pro Audio 9 and have heard some of the same things that I hear with Vegas.
PipelineAudio wrote on 8/10/2001, 10:57 AM
The soundcard is not a possible factor, as I am very careful to keep the rest of the system transparent.

Try the digital vs analog fader test for yourself, you will hear it.

The tracks come in digitally thru a TDIF card. I am not surprised at all that cakewalk and vegas sound alike.
Downloaded the SAW demo last nite from IQS. BOY do you appreciate Vegas' ease of use and GUI whwen you try to run an app like that!!!!
However, playing tracks together in that app sounded totally different than playing them together in vegas. In that app the summed files kept more of a "real " bottom, but then kind of sounded like they could be lost in a mix...