AC3 5.0 to 5.1 ? -AC-3 Encoder - MAGIX Community Forums Archive

Subject:AC3 5.0 to 5.1 ? Posted by: kenma Date:9/27/2003 4:58:20 PM Hello, I have an ac3 where the LFE-Channel is missing. Is it possible to generate a LFE-Channel from the other five channels ? How does one has to do that ? I'm using Vegas4 with 5.1 Surround Plug-In. regards Ken
Subject:RE: AC3 5.0 to 5.1 ? Reply by: kenma Date:9/29/2003 9:24:48 AM I've seen, that vegas has an low-pass-filter, when setting up a new project in surround-mode, but I'm not getting through, how it has to be used, the manual is not very handy to that, or did I misread something ? Is it possible to generate a new LFE-channel out of the other channels with vegas ? what are the steps to do it or to use the low-pass-filter in vegas ? My first test to do so was not successful. That's what I did: - loaded all mono-wavs (C, FL, FR, SL and SR) and panned to their surround-position - created also a track for LFE, panned to LFE but loaded nothing to this track, because I want to let vegas generate it :D - went to "render as...", choosed the 5.1 template and vegas started to calculate the new ac3 - when finished, I extracted the wavs from the newly generated ac3-file again, and opened them into soundforge, but there is no data in the lfe-wav again, but in the others! What am I doing wrong ? How is it possible to generate the LFE-channel ? regards Ken
Subject:RE: AC3 5.0 to 5.1 ? Reply by: vonhosen Date:10/1/2003 12:36:18 PM I don't think you can load AC3 files into Vegas If you have your original source (.wav) tracks I think you have to duplicate each of your tracks , then right click on the duplicates & select it as "LFE only" you will be OK (if I understand you correctly). No panning on LFE ,you can't , but LFE for each track will then be passed to your .1 channel at X over point.
Subject:RE: AC3 5.0 to 5.1 ? Reply by: JasonMilo Date:10/6/2003 12:49:58 AM If this is a music track.....don't make a LFE track. Let the consumer's bass management take care of the low frequency routing. Only use the LFE for Low Frequency Effects for explosions and walking dinosaurs and the like. Music does not need to be 5.1.....5.0 is actually preffered.

Subject:AC3 5.0 to 5.1 ?

Posted by: kenma

Date:9/27/2003 4:58:20 PM

Hello,

I have an ac3 where the LFE-Channel is missing. Is it possible to generate a LFE-Channel from the other five channels ? How does one has to do that ? I'm using Vegas4 with 5.1 Surround Plug-In.

regards
Ken

Subject:RE: AC3 5.0 to 5.1 ?

Reply by: kenma

Date:9/29/2003 9:24:48 AM

I've seen, that vegas has an low-pass-filter, when setting up a new project in surround-mode, but I'm not getting through, how it has to be used, the manual is not very handy to that, or did I misread something ? Is it possible to generate a new LFE-channel out of the other channels with vegas ? what are the steps to do it or to use the low-pass-filter in vegas ?
My first test to do so was not successful. That's what I did:
- loaded all mono-wavs (C, FL, FR, SL and SR) and panned to their surround-position
- created also a track for LFE, panned to LFE but loaded nothing to this track, because I want to let vegas generate it :D
- went to "render as...", choosed the 5.1 template and vegas started to calculate the new ac3
- when finished, I extracted the wavs from the newly generated ac3-file again, and opened them into soundforge, but there is no data in the lfe-wav again, but in the others!
What am I doing wrong ? How is it possible to generate the LFE-channel ?
regards
Ken

Subject:RE: AC3 5.0 to 5.1 ?

Reply by: vonhosen

Date:10/1/2003 12:36:18 PM

I don't think you can load AC3 files into Vegas

If you have your original source (.wav) tracks I think you have to duplicate each of your tracks , then right click on the duplicates & select it as "LFE only" you will be OK (if I understand you correctly).

No panning on LFE ,you can't , but LFE for each track will then be passed to your .1 channel at X over point.

Subject:RE: AC3 5.0 to 5.1 ?

Reply by: JasonMilo

Date:10/6/2003 12:49:58 AM

If this is a music track.....don't make a LFE track. Let the consumer's bass management take care of the low frequency routing. Only use the LFE for Low Frequency Effects for explosions and walking dinosaurs and the like. Music does not need to be 5.1.....5.0 is actually preffered.