PDA

View Full Version : Working with EAC3to more gui


carlmart
21st February 2009, 14:23
I have used EAC3to more gui to convert AC3 and DTS files, with success.

Is it possible to use it to adjust levels? How?

I am re-authoring some of my DVDs, and as I always convert the demuxed AC3 file to was in order to help me with the subtitles, I use Soundforge to navigate the audio track accurately.

It's quite common that the converted wav track, which is only 2-track stereo now, shows low levels, sometimes very low, like +/- 30dB or less.

Usually I proceed as this:

1) If peaks are within +/- 6dB things are fine and should be left untouched.

3) If levels are less than that, and the film was not mixed in 5.1, then I adjust levels up.

The question is how to do it with the original AC3 files directly, but also being able to "see" the levels to avoid clippings.

How can I do that?

madshi
21st February 2009, 19:58
You can use eac3to's option "-normalize" which will automatically up the gain as much as possible without producing clipping. Don't ask me how to do this with the GUI, though, cause I can't help there...

carlmart
21st February 2009, 22:03
You can use eac3to's option "-normalize" which will automatically up the gain as much as possible without producing clipping.

Can you or someone explain me how this "normalize" thing works?

My concern is that it works as a sort of AGC, increasing all levels up without keeping the original relative levels between them. That's why I wanted to see some kind of level meter as I do that.

Don't ask me how to do this with the GUI, though, cause I can't help there...

I am not familiar with scripts yet to do that myself. I have to use some GUI.

madshi
21st February 2009, 22:49
Can you or someone explain me how this "normalize" thing works?

My concern is that it works as a sort of AGC, increasing all levels up without keeping the original relative levels between them.
No, "normalize" retains the relative levels. It works similar to what happens if you raise volume on your receiver/amp.

carlmart
22nd February 2009, 01:37
No, "normalize" retains the relative levels. It works similar to what happens if you raise volume on your receiver/amp.

Then normalize is what I am looking for. Now let's hope there's a way to do it with EAC3to more gui.