disable analog while using optical

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Mickey Ong

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Jul 24, 2013
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how to disable an analog output while enable optical output from a creative titanium hd sound card . i have 2 set of speaker 1st is logitech z906 which using optical output and the other one is focal xs book which using RCA output .when i am enable DDL/DTS both speaker will have sound at the same time . how i am going to disable the RCA output when using the optical ouput . thanks !
 
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You don't want S/PDIF as the default. S/PDIF can handle only 4 different audio formats, mono LPCM, stereo LPCM, AC3 bitstream, and DTS bitstream. It cannot handle more than 2 channels of LPCM (uncompressed audio). If it could, there would be no need for DDL/DTSConnect.

Instead, DDL/DTSConnect intercepts what's sent to the speakers and with assistance from the sound card's hardware compresses it in real time into a Dolby Digital bitstream or a DTS bitstream. This allows 6 channels to be sent over S/PDIF in real time by virtue of compressing and encoding the audio into a digital...
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Pinhedd

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Aug 7, 2007
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You don't want S/PDIF as the default. S/PDIF can handle only 4 different audio formats, mono LPCM, stereo LPCM, AC3 bitstream, and DTS bitstream. It cannot handle more than 2 channels of LPCM (uncompressed audio). If it could, there would be no need for DDL/DTSConnect.

Instead, DDL/DTSConnect intercepts what's sent to the speakers and with assistance from the sound card's hardware compresses it in real time into a Dolby Digital bitstream or a DTS bitstream. This allows 6 channels to be sent over S/PDIF in real time by virtue of compressing and encoding the audio into a digital bitstream.

In order to do this, your applications still need to target the speaker output and not the S/PDIF output (DDL/DTSConnect do that for them). Unfortunately, and I just realized this now (and if I recall correctly, it was not the case before), but the application volume is tied to the speaker volume. So by lowering the speaker volume or muting the speakers, the applications also become lowered or muted.

Your best bet may be to turn off the focal xs book when you do not wish to use it.
 
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