Please help noob with audio questions...

geowickey wrote on 2/1/2010, 12:16 PM
Hi. Please help. I am producing an instructional DVD that has two audio tracks- (music and voiceover).

All I know is that I have levels for each audio track and then I have a master level.

Can someone please dummy down for me what approx levels I should set these to?

I know that I need to set my voice louder (relative to my music). But are there thresholds/ranges I should shoot for when setting the audio tracks and the master?

Also, I keep reading about other audio render settings but I can't find these. Perhaps I am using the wrong workflow???

All I do now is click Make Movie, then I select burn it to a DVD and hit Next, then I choose DVD and hit Next, then I check the box that says Use Widescreen DVD Format and that's it.

I'm using Vegas Platinum 9. Like everyone else says- my audio seems low when I play my DVD's.

Please please help.

Comments

cbrillow wrote on 2/1/2010, 1:42 PM
Have you also posted this in the Vegas Movie Studio forum? This is the Vegas Pro forum, where most of us aren't familiar with the capabilities and options offered by Vegas Movie Studio. Someone may, but you'd probably have better luck in the other forum.

Good luck in finding your solution.
richard-amirault wrote on 2/1/2010, 2:54 PM
Hi. Please help. I am producing an instructional DVD that has two audio tracks- (music and voiceover). All I know is that I have levels for each audio track and then I have a master level.

That's not all you have. What you really need to do is adjust the music up and down when you stop and start speaking. I would leave those "master" levels and the audio track levels alone .. or, if needed, just tweak them a little bit.

What you want to use is the AUDIO ENVELOPE to control the volume. To get that you need to use the ENVELOPE EDIT TOOL. To select that tool go to the icons at the top of the page. The NORMAL EDIT TOOL is selected by default. It looks like a squiggly horizontal line with a capitol "i" over it. It will already be "selected" and have a box around it. Click on the tool to the right of that tool. It looks like 4 small circles with a line connecting them. THAT is the ENVELOPE EDIT TOOL.

Now, when you bring your cursor down to the timeline it will have those 4 circles and a line to the right of the cursor. Place your cursor on the MUSIC audio track and right click. Select INSERT/REMOVE ENVELOPE then VOLUME. A purple line will appear in the center of your audio track. Click on the purple line and a box will appear on the line. Move your cursor slightly to the right and click again for a second box.

Now you can click and drag each box up/down/left/right and it WILL DRAG THE ENVELOPE WITH IT. By adding boxes at the right places and adjusting the audio envelope you can reduce (or increase) the volume of that audio track for as long or as short as you wish.

So .. when the voice track has words, reduce the volume of the music track ALMOST to the bottom FOR THE DURATION OF THE SPEECH. If you pause for any length of time bring the music up and then down again when the speech resumes.

You may have to play with the levels a bit 'till you find what works, but it is very easy once you know how.

Can someone please dummy down for me what approx levels I should set these to? I know that I need to set my voice louder (relative to my music). But are there thresholds/ranges I should shoot for when setting the audio tracks and the master?

Your voice should not be louder relative to the music. The music should be softer relative to your voice. As I explained above you do not want to increase your voice level .. you want to decrease the music level. If you try the former you may end up with distortion, and bad sound.

Also, I keep reading about other audio render settings but I can't find these. Perhaps I am using the wrong workflow???

Your "audio" or your "voice"?? If you have the music at the same level as your voice you will have a hard time hearing what you are saying. Again, *reduce* the level of the music when you are speaking and all will be good.
marks27 wrote on 2/1/2010, 3:25 PM
Geowickey,

I am not familiar with Platinum 9, but I believe it has many of the same features as Vegas Pro.

Re levels: Does Platinum has audio meters appearing on the tracks somewhere? If so, then a reasonable level to aim for with the master volume, which is the final volume, is around -6 Db. At least make this your starting point - you might wish to experiment a little. Avoid going above 0.

Remember: the master audio is the sum of all the other audio tracks, so you might need to experiment a little to find a good balance of levels between the dialog and music tracks.

The other posters referred to dropping the level of your music when there is dialogue. This practice is known as "audio ducking", and is just that, one audio level "ducks" to allow space for other audio. Thus, you drop the level of the music in those places when you wish to hear the dialogue. You can easily do this using a Volume envelope on the music track. I'm sure the Platinum 9 help will be able to assist you on the use of track envelopes.

Hopefully this will give you a bit of info to start with.

Good luck,

marks
BudWzr wrote on 2/1/2010, 9:00 PM
There is no "standard" volume for DVD's.
geowickey wrote on 2/2/2010, 5:39 AM
Thx for the replies. So what I am hearing so far is to use audio envelopes so that I can lower the sound of the music when I am speaking. Got it. This helps me a lot for what to do on the project timeline but I am still confused about rendering.

I keep reading something about -31 being some sort of magic number for rendering.

Anyone?
rs170a wrote on 2/2/2010, 6:23 AM
I keep reading something about -31 being some sort of magic number for rendering.

Sorry but that's a setting that you can only get if you have the Pro version of Vegas with the pro AC-3 encoder.

Mike
BudWzr wrote on 2/2/2010, 6:24 AM
Look up "gain" and "volume" on the Wiki. They are two different animals.

Gain has to do with sample rate, and volume has to do with playback level.

A track with too much gain will have clipping (red) peaks, too little gain will not have enough dynamic range.

Mixing tracks with different "levels" are constrained by the track with the poorest levels. Increasing volume in a track with low levels results in distortion.

And my post will attract the audio pros to give me a lecture, so you will learn more soon.
geowickey wrote on 2/2/2010, 9:33 AM
So let me come at this from another angle.

If I've adjusted the levels on my voice track and my music track so that my voice can be clearly heard over the music (with or without envelopes) and my master is set to around -3 (and everything sounds reasonably good after I burn the DVD) then...

am I good?

Is there any fatal step I am missing? Am I okay with the render workflow I described above?

THANKS!
Yoyodyne wrote on 2/2/2010, 11:12 AM
If it sounds good to you then its' good :)

have not read whole thread but just making some suggestions.

Master peaking at -3 is fine. You could go up to -1 and still be fine, just don't want to be hitting the red.

If I understand your work flow properly it looks to me like your music volume will be too low. When there is no speaking the music should increase in volume. It can still be lower than the voice level but having it stay at the "under the voice" level the whole time should result in the music track seeming to low.

Using volume envelopes to bring down the music when your speaking is the way to go. Another trick is to use the track eq and reduce about 3db at 3k from the music bed. It carves out some sonic space for the voice track, this will keep the music bed from competing with the voice. Feel free to adjust to taste.

Hope this helps.