2.0 ac3 file just mono?

[Arcon]

what is the easiest way (next to "hear it") to determine if a 2.0 ac3 file from a dvd (old movie from the 1960's) is really stereo? i think it's just the mono track in a stereo ac3 file, so i'd like check if the two channels really differ somewhere. what application can help me with this?

[Sycho]

you take the right channel and subtrack it from the left channel, if that produces any audio it is stereo

[E-Male]

of you got a 5.1 system set it to dolby surround/dolby prologic/dolby prologic II/ ...
if the soruce is mono it#ll come from the center leaving the other 4 speakers dead

[Arcon]

Originally posted by sycho
you take the right channel and subtrack it from the left channel, if that produces any audio it is stereo
can you give me a hint what software i can use for this?

[Arcon]

i found a cheap solution that can visualize the two channels: nero wav editor with ac3 importer plugin.

[eb]

there is also free solution by instaling AC3Filter
http://img62.exs.cx/img62/9189/AC3Filter1.jpg

eb