besweet ac3 to wav

[graysky]

I have a 5.1 AC3 file generated from DGIndex (Jersey Girl-AC3 T01 3_2ch 448Kbps DELAY 0ms.ac3). When I try to convert the AC3 to either ogg, mp3, or wav either using besweet or oggmachine the resulting file is always too quite. I have tried using normalizing to 100% or not at all, and using hybrid gain or not at all. I should mention that I'm interested in stereo output... I have no special speaker system, just the stereo speakers in my TV

Can anyone tell me how to decode my file to either wav or directly ogg such that the output file will have the same volume level as the original AC3? I'd even do this with azid.exe and commandline, it doesn't have to be a gui method.

Thanks!

[fritzi93]

You could install AC3Filter. In "Configuration", go to "System" and set "Prefer AC3 Filter", then go to "Main" and increase both gain sliders, also normalize. I have gains set at +20 db. Works for me.

Good luck.

[graysky]

But shouldn't the gain depend on the source? In some cases 20 dB might be overkill and introduce clipping.... there has to be a way for the util (besweet or oggmachine in my case) to analyze the ac3 file and select the correct amount of gain automagically.

[fritzi93]

Sorry, I neglected to say make sure Auto Gain Control is checked in "Configuration" > "Mixer" > "Options". Also, it's the left hand master slider that really matters under "Main" tab, haven't looked at it in a while.

Here's a quote from the help file: " Auto Gain Control - automatic gain control. It controls current gain to prevent overflow. Current gain is shown at GAIN level. When this option is disabled high-level signal is clipped on overflow what leads to unpleasant distortions. When this option is enabled then current gain level will be decreased and overflow does not happen. System behavior after overflow is defined by One-Pass Normalize Option. If one-pass normalize is disabled then current gain will be gradually restored up to Master Level. In this case Master defines mean gain level."

There's more, but you can read it yourself if you want to try it. As I said, it has worked well for me.

Let us know what solved your problem.