spdif sound dynamic decrease

Discussion in 'General Discussion' started by PITmaster, Jan 21, 2007.

  1. PITmaster

    PITmaster New Member

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    Hi

    Two cards EMUAPS and Audigy2. Digital path from APS to Audigy and back to APS.
    I've noticed sound dynamic decrease, playing through mentioned digital path.
    So PC=>APS_out sound better than PC=>APS->Audigy2->APS=>APS_out

    Why?
     
  2. Max M.

    Max M. h/h member-shmember

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    maybe because of APS->resampling->Audigy2->resampling->APS?
    although i'm not really sure i understand what "sound dynamic decrease" is...
     
  3. dj_stick

    dj_stick Apple Fanboy?

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    are you talking about quality? sound level?
    but yes max is probably right, each card you send the sound through also processes it
     
  4. PITmaster

    PITmaster New Member

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    It's exactly as I said.
    I have very well working DSP settings for both cards but in fact it's very complex too.
    All streams I always send to APS's analog outs because its D/A are the best. Sometimes I play sound from EMU FXBus0/1 sometimes from A2 FXBus0/1 or from both sources.
    It sounds little bit worse when has to go through digital connections. I don't understand why. Have I to use b2b, dither or something else?
    I will do more tests today evening.

    BTW, I've tried to use FXBusX and epiloglt to experiment with bit-to-bit playback but I can't connect anything to epiloglt. Streams sounds strange from FXBusX, even 48/16.

    PITmaster
     
  5. PITmaster

    PITmaster New Member

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    Yes, I think the difference it's about -3db or something.

    PITmaster
     

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