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Old March 17th, 2003, 12:34 PM   #1
Capt. Quirk
 
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Dolby 5.1 for us?

I just got the new copy of Videomaker magazine, and saw a comparison of DVD creation programs. What peaked my interest, was that some of them offer Dolby 5.1 surround encoding. Affordable for even me!

Which brings me to my question- Who is actually doing 5.1 surround, and how is it accomplished? I realise that you would probably need to have multiple mic placement, and seperate channels. How do you take this, and transform it into the 3D enviroment that I love so much?
Thanks
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Old March 17th, 2003, 05:08 PM   #2
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Usually audio is recorded in mono or stereo (whereby in an orchestra
each instrument is recorded seperately) and then mixed together
in a 3D space.

What they tend to do on movies is get some ambient sound from
a location and mix that in most or all of the channels and then
have dialogue on the center and/or left/right speakers. Music
can be mixed in any of the channels depending on the wishes
etc.

Surround is a lot "less" surround (or less realistic) then you think
it is. Things like bullets flying by or planes flying over you are
done in a very simple way. They just record or create the sound
and then are moved across the 3D sound field with surround
editing programs.

Some orchestral recording are being done in real 3D, but I
haven't heard a lot about these myself...
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Old March 17th, 2003, 08:32 PM   #3
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That's the kind of stuff I wanted to know. What kind of 3D audio programs?
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Old March 18th, 2003, 01:41 AM   #4
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check out Vegas Video 4. It is the first NLE app to have 5.1 audio editing as far as I have seen.

Rob:D
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Old March 18th, 2003, 05:14 AM   #5
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I think most professionals use Pro Tools (there is also a free
version of this available, but I don't know whether this supports
surround mixing). Robert gave an excellent suggestion, the
new Vegas 4 (you can download a demo from www.sonicfoundry.com)
Editor has support for it as well.

Most more serious audio applications support surround mixing
I think. I can ask an audio friend of mine which applications he
is using for this if you'd like.
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Old March 18th, 2003, 05:49 AM   #6
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Dolby 5.1 for us?

I took a one-day seminar on DVD creation for profit during which Mac and PC solutions were demo'd. The Apple authoring tool of choice, DVD Studio Pro, had a great solution for 5.1, calling up an illustration of a surround-sound 6-speaker system on which you could drag and drop audio files. The pc-based DVD Maestro (also Apple-owned) didn't have the feature (but does of course support AC-3) and if other lower end software does I'm not aware of it.
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Old March 18th, 2003, 08:00 AM   #7
 
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I'm using Vegas 4 for my surround sound recording. Where I don't have individual mono tracks for each of the surround channels, I downmix a surround mono channel by using an equalizer to "remove" all audio frequencies but the one I want to pass to the surround channel. Gives a result that makes the listener/viewer feel right in the midst of the music.
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Old March 18th, 2003, 10:55 AM   #8
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Another high end editing application with 5.1 surround is Incite Editor 3.0 with a Merging audio Board.

www.inciteonline.com

Just thought I'll add my 2,

All the best,

Ed Smith
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Old March 18th, 2003, 11:18 AM   #9
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Ed, I have seen Incite before, and it looks wonderful. But... Is there an alternative to Incite's $3,100 price? Or, 1,984 BP, as you would say? Sorry, my keyboard doesnt have the L with the squiggles :)

Instead of another NLE system, and having to learn to edit their way, is there a simple and cheap plug-in to create an imersive audio environ?
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Old March 18th, 2003, 11:26 AM   #10
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What NLE are you using, I think there are some surround plug-ins for most packages. But I don't know where to find them.

About 6 months ago there was anarticle about creating a surround mix using Premiere. Ummmm, now where is it.

Ed Smith
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Old March 18th, 2003, 03:40 PM   #11
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what type of file does Dolby Digital 5.1 create? Is this file just imported into any DVD authoring program that can hadle Dolby 5.1?? What about DTS? How do u make that, and what apps can do it??
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Old March 18th, 2003, 04:12 PM   #12
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Dolby Digital is usually AC-3 from what I understand. You should be able to just import that file into the dvd program. I dont know any of the specifics but Im sure some others can help. I haven't heard of DTS being created within any apps as of yet.


Rob:D
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Old March 18th, 2003, 04:17 PM   #13
 
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DTS is still a fairly uncommon audio format and not supported by most audio apps. Stick with AC3, for now.
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Old March 18th, 2003, 07:14 PM   #14
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Ed- I use Premiere primarily, occasionaly using Storm. I haven't moved into creating DVDs yet, but will probably make that move before too long. Is any of this audio tech available for VHS as well as DVD?
Thanks
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Old March 19th, 2003, 01:19 AM   #15
 
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I create 5.1 discrete and also Dolby Digital EX soundtracks on my Mac. I do most of the audio mixing within Final Cut Pro. I usually allocate 4 or more tracks per channel, usually just two for the subwoofer, though. The center channel is where I keep most of the dialog. Left and right are used for music and sound effects as are the left and right surrounds. The subwoofer is used to give power to rumbling thunder, gunshots, explosions, whatever. I export each channel combined (all the center channel tracks combined into one, etc etc etc) out as single mono 48khz 16-bit AIFF files. Obviously I have 6 sound files here, each the length of the video program I am editing. I can then use Dolby A.Pack (which only works on Mac OS 9, the OS X version is extremely buggy) to drag and drop the audio files on the channel which they represent. Then I make some settings and encode a single AC3 file. I then burn the video and audio onto a DVD-RW and listen to it in my "home theater" which has properly calibrated levels and make adjustments in the audio levels in Final Cut Pro as necessary.

I have had extrememly good results.
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