Why downmix 2 channel AC3 with surround encoding?

[Barsk]

Hi!

I have a question about 2 channel AC3 files.

When downmixing from a 5.1 to a mp3 2 channel audio file it is of course neccesary to decode all channels and combine them to produce Dolby surround sound. But if one of the tracks on a DVD contains pure 2.0 channels with Dolby surround - no processing other than extraction to WAV and MP3 encoding should be neccessary.

Is there a setting in Besweet to do this, or is Besweet already intelligent enough to do this automatically?

Regards
Barsk

[DSPguru]

no processing is done on 2.0ac3 track.

[Barsk]

Ok, thanx a lot. I *thought* that was the case, but I could not find any reference to that in the docs or faqs I.

Regards
Barsk