AC-3 5.1 channel mapping

Hi there … my question is about the opening a AC-3 6 channel ac-3 audio file.

I extracted an … .ac3 … file from a AVI video and I want to enhance the Left surround channel.

When I load the avi video into … TMPGEnc Video Mastering Works 5 … it shows the Left Surround is weak compared to the Right Surround.

I see heavy activity in the top 3 channels … Front … Left and Right … and Center … but … starting from the Top channel … which is Front Left … Front Right and the Center … all three … look the same … by looking at them … I cannot tell …

As for SL and SR and the LFE channels … because the Left surround is weak … I can figure that out … the Right Surround is larger [as a way of saying it]

LFE is easy … has bass and only bass. And that channel is … 5 … So without opening up Audacity again … 4 and 6 … are the surround channels.

My question is … Audacity version 2.0 … Channels … 1 … 2 … 3 … >>> which ones are Front Left and Front Right and Center

Thank you

https://forum.audacityteam.org/t/ogg-vorbis-why-mono/13050/1
https://forum.audacityteam.org/t/5-1-multichannel-ac3-creating-5-1-ac3-file-without-downmix/17667/1

Koz