Surround downmix x Stereo, wich best?

[bugeyes]

I belong to the SVCD team ( Smart Ripper>DVD2AVI>
TMPGenc sequence) and I collect music clips.

As I am looking for good sound quality can someone tell
me the difference between the options above when converting
an AC3 5.1 file? These options appear in DVD2AVI, HeadAC3he/Azid
and Besweet/Azid.

What happens with the center, rearL and rearR channels
when I do not choose the surround downmix?

I assumed by your audio FAQ that, for the same bitrate and
same sampling frequency, the dual channels and joint stereo
options would loose quality if compared with stereo. Right?

[DSPguru]

Originally posted by rvbarbosa
I belong to the SVCD team ( Smart Ripper>DVD2AVI>
TMPGenc sequence) and I collect music clips.

As I am looking for good sound quality can someone tell
me the difference between the options above when converting
an AC3 5.1 file? These options appear in DVD2AVI, HeadAC3he/Azid
and Besweet/Azid.

What happens with the center, rearL and rearR channels
when I do not choose the surround downmix? this has been discussed over and over in the past. read the guides (http://doom9.org/ac3tomp2.htm) and search (http://forum.doom9.org/search.php?s=) for old posts on this forum and the svcd forums.

I assumed by your audio FAQ that, for the same bitrate and
same sampling frequency, the dual channels and joint stereo
options would loose quality if compared with stereo. Right? http://forum.doom9.org/showthread.php?s=&threadid=22344

[bugeyes]

Hi DSPguru

I did two searches on the forum - with
AC3 and Azid - and I looked back 10
screens on each search. I found no
answer to my question.

The manuals I read only show how
to get the stereo, or surround option,
but they do not explain what is happenig
behind the option.