Originally Posted by RavenX
I'm really sick and tired off various idiots in these forums that only mislead people. This applies to Sdurani. Dobly Digital is plain and simple 5.1 encoding that is displayed on your receiver every time. You don't get that display if there is Dolby Stereo, Dolby Surround and if you get Dolby Digital EX then EX is displayed. Dolby Digital was not used in 1990.
Would you care to comment on the Wikipedia article regarding Dolby Digital?http://en.wikipedia.org/wiki/Dolby_Digital
A relevant portion of that article reads as follows:
Although most commonly associated with the 5.1 channel configuration, Dolby Digital allows a number of different channel selections. The full list of available options is:
Mono (Center only)
2-channel stereo (Left + Right), optionally carrying matrixed Dolby Surround
3-channel stereo (Left, Center, Right)
2-channel stereo with mono surround (Left, Right, Surround)
3-channel stereo with mono surround (Left, Center, Right, Surround)
4-channel quadrophonic (Left, Right, Left Surround, Right Surround)
5-channel surround (Left, Center, Right, Left Surround, Right Surround)
All of these configurations can optionally include the extra Low Frequency Effect (LFE) channel. The last two with stereo surrounds can optionally use Dolby Digital EX matrix encoding to add an extra Rear Surround channel.
Many Dolby Digital decoders are equipped with downmixing functionality to distribute encoded channels to available speakers. This includes such functions as playing surround information through the front speakers if surround speakers are unavailable, and distributing the center channel to left and right if no center speaker is available. When outputting to separate equipment over a 2-channel connection, a Dolby Digital decoder can optionally encode the output using Dolby Surround to preserve surround information.
The '.1' in 5.1, 7.1 etc. refers to the LFE channel, which is also a discrete channel.
And of course many cable and satellite programs are in fact transmitted as Dolby Digital 2.0.