Channel order when exporting to AC3 5.1 surround

[DrLex]

I'm trying to make my own AC3 surround track. I have 6 separate channels for Lf, Rf, C, Ls, Rs and LFE respectively. Can anyone tell me in what order I should put these channels to get them assigned correctly when exporting to an AC3 file?

I could search the correct channel order through trial & error when I have access to a surround system, but it would save me a lot of time if someone has done this before and could share their experiences...

Edit: adding '5.1' to make this topic easier to find in search engines, because I couldn't even find my own post while searching for stuff like "5.1 channel ordering"

[kozikowski]

How sure are you it doesn't let you assign them at the export step?

Koz

[DrLex]

How sure are you it doesn't let you assign them at the export step?

It lets me assign channels (if 'custom mix' is enabled in the preferences), but the target channels just have numbers, not very helpful.

Anyhow, I did the trial & error thing, and the correct ordering appears to be:
1. L front
2. Center
3. R front
4. L surround
5. R surround
6. LFE

[takm]

Just to complement, i think if you try to export to OGG it is:

1. Left
2. Center
3. Right
4. LS
5. LFE
6. RS

[DrLex]

It seems that the ordering of the AC3 channels has changed between Audacity 1.3.7 and 1.3.8
The new ordering is:
1. L front
2. R front
3. Center
4. LFE
5. L Surround
6. R Surround

1.3.8 is useless anyhow because it refuses to save .aup projects. Time Machine to the rescue...

[kozikowski]

<<<1.3.8 is useless anyhow because it refuses to save .aup projects. Time Machine to the rescue...>>>

So you're on a Mac. Have you been following all the troubles 1.3.8 has on Macs? Try the latest build.

http://forum.audacityteam.org/viewtopic ... 37&t=11534

Koz

[Gale Andrews]

It seems that the ordering of the AC3 channels has changed between Audacity 1.3.7 and 1.3.8
The new ordering is:
1. L front
2. R front
3. Center
4. LFE
5. L Surround
6. R Surround

Whatever may or may not have happened, that ordering is correct for 5:1.



Gale