What the hell is Dolby-Digital 2 chanel???

Andre Barros

Stunt Coordinator
Joined
Mar 12, 2003
Messages
72
I recently purchased the first season of C.S.I. and the only soundtrack available is DD 2 chanel. What the hell is this? I never knew there was such format and my receiver only decodes it as prologic II. Any thoughts?

Regards,

André
 

Vince Maskeeper

Senior HTF Member
Joined
Jan 18, 1999
Messages
6,499
dolby digital is a format of compressing digital audio, like WMA or MP3. This format can contain between 1 and 6 channels (7 with matrixing).

Many dvd titles are dolby 2.0, which basically means stereo using dolby's format to compress the audio. Dolby can also do mono.

Some 2.0 titles are matrixed to allow pro logic processing to extract a surround channel, but they are still 2 channel.

This is mentioned in the FAQ and Primer, and on Dolby's site.

-V
 

Vince Maskeeper

Senior HTF Member
Joined
Jan 18, 1999
Messages
6,499
Just a FYI- Uncompressed 2 channel PCM data at 48k/16bit takes about 1500kb per second while Dolby 2 channel at 48/16 is less than 200kb per second.

That's one of the main reasons it's used.
 

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