@DSPguru - DS2 downmix bug?

[MattO]

Hi DSPGuru,

If I run besweet with the following commandline:

besweet.exe -core( -input "d:\movie.ac3" -output "d:\movie.mp2" ) -azid( -g max -s surround2 ) -ota( -d -080 -r 960 1001 ) -ssrc( --rate 44100 ) -2lame( -b 128 -m s -e )

on a AC3 source which is Dolby Surround, not Dolby Digital, (ie: Young Guns), the resultant MP2 sound is distorted. But this commandline works fine:

besweet.exe -core( -input "d:\movie.ac3" -output "d:\movie.mp2" ) -azid( -g max ) -ota( -d -080 -r 960 1001 ) -ssrc( --rate 44100 ) -2lame( -b 128 -m s -e )

Is there a way for besweet to detect whether a AC3 file is Dolby Digital or Dolby Surround and discard the -s surround2 switch when necessary?
I have a feeling besweet is attempting to do this anyway because the log window said Dolby Surround Compatible and not Dolby Surround 2 Compatible, but the resultant sound isn't correct.

your opinion would be appreciated.

MattO

[DSPguru]

yea, i'm aware of this bug...
sure BeSweet can detect this, and it even used to. i'll find that flaw, don't worry.. :)

for the time being, you can ignore it by not setting "-s surround2", just like you did.