How do you know the volume level of each channels in a 5.1 track?

[zee944]

I've asked this before on another site, but got no answers (yet), so I thought I'd post it on doom9:

I'm searching for a tool which can tell the volume levels of each channels in an existing (already encoded) AC3 5.1 mix.
Something which tells something like:

C: -4.76 dB (maximum)
FL: -3.87 dB (maximum)
FR: -3.82 dB (maximum)
SL: -6.78 dB (maximum)
SR: -6.79 dB (maximum)
LFE: -0.05 dB (maximum)

OR

C: -12.56 dB (average)
FL: -14.33 dB (average)
FR: -14.82 dB (average)
SL: -19.72 dB (average)
SR: -19.68 dB (average)
LFE: -22.87 dB (average)

The reason I'm asking this because I'm having problems with achieving the same mixing levels after reencoding an AC3 file.

Please help :)

[raquete]

in pc use winamp with winampac3 decoder, you'll see each level.
(but can't be measured only visualisation)

ps: i answered you in "another site" that is no big deal re encode ac3 files.

[zee944]

in pc use winamp with winampac3 decoder, you'll see each level.
(but can't be measured only visualisation)

ps: i answered you in "another site" that is no big deal re encode ac3 files.

I can't see the connection with my question. :confused:
How can I learn the gain levels (average or peak or both) of the six channels?

[raquete]

sorry, i really don't know how to measure (average or peak or both) in ac3 files.
with winampac3 decoder you can't measure but you'll see the levels of each channel in 6 bargraphs.

[Gavino]

I'm searching for a tool which can tell the volume levels of each channels in an existing (already encoded) AC3 5.1 mix.
The SoundOut plugin for Avisynth gives you this information (both peak and average levels per channel). You can then quit without saving the output.

[zee944]

The SoundOut plugin for Avisynth gives you this information (both peak and average levels per channel). You can then quit without saving the output.

Thank you Gavino, great hint, it's pretty much what I want. :D

Have to find a reliable way in SoundOut to analyze 6 ch AC3s though...