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Topic: a few questions about dts-thx and dolby digital (Read 2982 times) previous topic - next topic
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a few questions about dts-thx and dolby digital

Hello, I want to make a few questions about dts, thx and dolby digital.

I have a creative audigy 2 zs and logitech g51 soundspeakers
my questions are.

1.my sound card is THX certified but my speakers aren't, have I  a better sound quality or not ? Because my speakers don't have THX certified.

2.The audigy 2 zs has dts and dolby EX decoder, does anyone knows if it is hardware based or software emulation ?

3.If I want to enjoy dts  and dolby digital ex sound , I must have a dts-dolby ex sound card, my speakers must support dts-dolby ex and the movie must have dts-dolby ex sound ? (my speakers have dts and dolby digital ex decoder)
thanks !

a few questions about dts-thx and dolby digital

Reply #1 –
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1.my sound card is THX certified but my speakers aren't, have I a better sound quality or not ? Because my speakers don't have THX certified.
  THX certified speakers would probably sound better.  But, I'm sure that there are plenty of really good non-certified speakers.  A certified amp/speakers probably has more power and bigger woofers.  As I understand it, the amp/speakers are supposed to reproduce theater-quality sound at theater-volumes in your home.

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2.The audigy 2 zs has dts and dolby EX decoder, does anyone knows if it is hardware based or software emulation ?
I don't know, but you can check your CPU utilization (task manager) to see if enabling either of these increases your CPU usage.

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3.If I want to enjoy dts and dolby digital ex sound , I must have a dts-dolby ex sound card, my speakers must support dts-dolby ex... ?
  You need a decoder somewhere.  If you are hooked-up to the soundcard's analog outputs, the decoding has to be done by the soundcard before the digital-to-analog conversion.  If you have a S/PDIF connection (coax or optical), the decoding can be done externally.

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...and the movie must have dts-dolby ex sound ?
  Maybe...  With Dolby EX, the additional EX channel(s) is not discrete-digital.  It's derived-matrix (like Pro logic).  So, with a 5.1 channel mix, you'll probably get something out of the "extra" speaker even if the movie isn't EX encoded.  As I understand it, DTS-EX does have an additional discrete-digital channel.  But again, I assume something will be derived for this speaker/channel with a 5.1 channel DTS track.

P.S.
I don't think your G51 is an "EX" speaker system...  For EX, you a need 6.1 or 7.1 system. 

Most "current" DVDs have a Dolby 5.1 track and a Dolby "stereo track".  The stereo track (LPCM or Dolby AC3) is usually matrix-encoded with "Dolby Surround" (like most VHS tapes), and it can be decoded with a Pro Logic system set to the "movie mode".

DTS is optional, and the DTS decoder works only if you have a DTS track.