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Audio channels
Hello. I’m a new Vegas user and I hope I can quickly get some help for a problem I can’t find an answer for it the forums. Here’s my situation. I was working on a video project that I wanted to get done with today using Windows live movie maker but that doesn’t do what I wanted to do, so my son suggested trying Vegas. I started last night, so far I’ve got 2 video tracks w/ they’re respective audio track (which are muted b/c I don’t want them) and I’m matching the video w/ audio that was created in cubase le4, exported to 2 split audio files (l/r) which I then imported into Vegas. Then I panned each audio channel to full l/r (appropriately) but when it plays back, both audio channels come though both audio channels in my headphones but the master output (mixer?) shows only the left or right, depending on which track I have muted. I imagine that I’m overlooking something simple but I can’t find the answer in the forums. Please help, I really need to get this done and I’m going to lose a lot of time while I continue to figure out how to use the video editing tools. I have a feeling it has something to do w/ the proxy audio file, but I really don’t have a lot of extra time to figure this one out.
Thanks for reading,
Joe -
13 Replies
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Why don’t you just export a single stereo file from Cubase LE so that you don’t have to do any other fiddling around. This would be the easiest solution.
~jr
http://www.johnrofrano.com
http://www.vasst.com -
I could do that, but when I export from cubase to an interlaced wave file, I lose a lot of stereo quality when compared to the way it sounds in cubase. (I still have things to learn in LE when it comes to the final mix) So, I thought the sound quality would improve if I used 2 true separate channels. Theoretically it should, right?
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[Joe Davies] “So, I thought the sound quality would improve if I used 2 true separate channels. Theoretically it should, right?”
Nope. A stereo wave file contains two mono channels. A mono wave file contains one mono channel. The sound is exactly the same whether you render two mono or one stereo wave file. You will notice that the one stereo file is twice the size of one of your mono files because it contains two channels of audio. There is absolutely no difference in sound quality.
~jr
http://www.johnrofrano.com
http://www.vasst.com -
I understand that they’re both mono file, but they shouldn’t be identical. One file should have all the audio and effects that are panned left and the other should have all the stuff that are panned right. So, if I put these files on two separate channels in Vegas, I would think Vegas should output a true stereo signal(?). Like I said, I’m completely new to Vegas, but it seems to me that if I put a mono file in an audio track and then pan that full left, I shouldn’t hear anything on the right channel. Am I wrong?
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You are absolutely correct. If you place a mono file on a track and pan it hard left you should not hear anything coming out of the right speaker. I realize that you did this and it didn’t work. Then I went back and re-read your original post where you said:
[Joe Davies] ” Then I panned each audio channel to full l/r (appropriately) but when it plays back, both audio channels come though both audio channels in my headphones but the master output (mixer?) shows only the left or right, depending on which track I have muted.”
If I understand correctly, the master bus in Vegas is showing just the left or just the right depending on which you mute. That sounds like Vegas is working properly. That leaves your headphones. How are they plugged into your computer because they seems to be summing the output.
~jr
http://www.johnrofrano.com
http://www.vasst.com -
I don’t have any peripherals connected, so my headphones are just plugged into my computer’s headphone jack. (By the way, thanks for your help, I just realized I’ve thought it, but haven’t typed it)
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If you’re just using the sound chip on your PC then you might want to look into the settings to see if it is summing the headphone output for some reason. I assume the headphones are stereo (i.e., they have a TRS connector) and they are plugged all the way in. (it pays to double check)
If the Vegas meters are showing the correct left and right signals then the final rendered file will be fine.
BTW, you’re welcome. 😉
~jr
http://www.johnrofrano.com
http://www.vasst.com -
Ok, now it’s starting to make sense. I thought I had something major going wrong. Hey, aside from the possible summing thing, could I be double monitoring? Something you said made me flashback to something in the user guide about setting the monitor separate from the audio output. Could I be hearing both signals? (the monitor being a mono channel)
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Yea, it’s hard to say what’s going to the headphone jack on the motherboard audio chip. I would double check the documentation just to be sure.
Also make sure that your headphones are really stereo, i.e., they correctly playback stereo signals using an MP3 player or some other device.
~jr
http://www.johnrofrano.com
http://www.vasst.com -
You might have the mono downmix selected above your mixer. It looks like a little speaker. If yes, you simply click on it and the icon will change to one of two speakers: this means you’re on stereo.
Daniel Hughes
Amateur Writer, Director,
Director of Photography
United Kingdom
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