I compared 4 different Channels without Home Theater Sony TV Speaker output from Airtel Internet TV
Movies Now HD Dolby Digital enabled
but in DTH Audio Setting if I set Dolby Digital or Stereo both Sounds same and in lower side (getting optimal audible sound when volume kept at 22)
Discovery HD world same as Movies Now HD sounds same in Dolby Digital or stereo
(getting optimal audible sound when volume at 22)
Vijay TV HD sound output is low in Dolby Digital (but getting good sound at 22 here too) while stereo sound is loud (10 itself will be very loud)
While Fox Life HD sound loud both in Dolby Digital and Stereo (6-8 itself will be very loud in both Stereo & Dolby)
@thisisjagan bro this isn't a problem with Airtel at 22 I'm getting good sound in Dolby Digital enabled channels and channels where both Dolby Digital & Stereo sound difference at under 10 for stereo and sharply at 22 for Dolby the sound is good and there is third case both in Dolby & Stereo under 10 itself good sound.
In my obsevation Both Discovery HD & Movies now HD is pure Dolby enabled channels and while checking further via Home Theater Movies now HD producing extraordinary Sound while movie plays but Discovery HD the program that's running now Food Factory doesn't consist of any Dolby effects that a Movie has so Discovery HD sound will be better when a program that has very good Dolby effects gets telecasted and regarding Tata Sky they might be allowing a seperate Stereo feed that might be a reason for better sound.