Now, play a file using that configuration to one of the "manual" (non-Dirac) presets (Preset 1 or Preset 2… whichever you have properly set up) and note how it sounds to you. Integer Mode will automatically detect that the XMC-1 prefers 24 bit resolution and pad accordingly. What I would suggest to you is to do yourself a favor and set Audirvana to convert DSD to either 88.2k or 176.4k PCM. Nonetheless, I'm still a big fan of Audirvana and, if I were still using it, this is how I would have it set up. I still own a copy of Audirvana, but find JRiver's feature set a bit more suited for my needs in my system. I agree that it's ideal to perform as few data conversions as possible and, since Audirvana does an excellent job at this, it only makes sense to do it here. Again, that's "my" opinion.Īudirvana is an extremely nice Mac based player which utilizes iZotope algorithms for all up/down resampling. If a recording isn't either DSD > DSD or, in the case of "vintage" recordings, Analog > DSD from beginning (recording/editing/mixing) to end (mastering), then it's all a moot point. IMO, there's far too much "over-thinking" wasted over the whole PCM vs DSD debate. However, Dirac is not applied to DSD streams and would be decoded in the native Reference DSD mode. I believe that was simply a typo in markc's response. The native operating parameters of the Dirac implementation in the XMC-1 is 24bit/48k. Jriver will then be set to downconvert DSD to 24/176.4 over HDMI to the XMC-1 to play back direct, without any processing OR, if I choose to use Dirac on DSD files too, I will downconvert to 24/28kHz which is the native bit depth/frequency of Dirac processing. I have plans to build a Home Theatre PC with JRiver and will use the Pentium Core CPU's embedded Intel HD Graphics to output audio over HDMI and this WILL allow 192, 176.4, 96, 88.2, 48 and 44.1kHz. Sitting at my desk with my home PC, I use JRiver which software transcodes to 44.1kHz 24 bit PCM which my embedded realtek sound chip will convert to analogue (It only does 44.1, 48, 96 and 192kHz and sadly not 88.2 or 176.4 which would be more purist for DSD down converting). The Oppo has a clunky interface for browsing the disc but will play DSD "direct" to analogue with no PCM intermediary from which I output with the 7.1 RCA outputs and play direct with no processing. Personally, I have an Oppo 105 with a 3TB Seagate USB hard drive which contains all my audio files, including backup archival. If by some super special audio card you have, the DAC there might accept DSD direct to analogue then you could get DSD "direct" to analogue (I am not aware of a computer add on sound card that will do this, however) You can PLAY a DSD file on a computer and listen to it - this usually uses the CPU to software decode to PCM which it passes to your audio chip for conversion to analogue. The XMC-1 does not, at this time and may never do so. You can however get Stereo DSD over a USB cable IF the processor will accept DSD over USB. You therefore cannot currently get multichannel DSD direct out of a computer via HDMI and probably not USB. You CANNOT currently output a pure DSD stream from a home computer (PC or Mac) over HDMI as there are no drivers to allow you to do this. The capability to transmit ANYTHING over HDMI has to be hardwired into the video chipset AND the operating system's drivers need to be written to allow the video chipset to tag the DSD onto a video signal for HDMI transmission. HDMI output from a PC or mac is a feature of the video chipset and nothing whatsoever to do with the audio capability of the computer otherwise. The best hope is for Emotiva to have a change of heart and find some way of allowing the XMC-1 to accept DSD over PCM (DOP) which a computer can output as a pure DSD stream carried over a 24/192 PCM stream and wrapped / unwrapped at each end. Given that many NVidia graphics systems don't even enable 88.2 and 176.4 kHz frequencies, it seems unlikely they will simply include DSD. It would need Intel to enable the feature in their HD Audio drivers if you are using an embedded Intel graphics solution or NVidia / AMD to write it into their HD Audio Drivers if you use one of their graphics solutions with it's attached HDMI/Display port out. All HDMI audio is tagged onto an HDMI video feed. It would require the graphics system drivers to enable it. There is no technical reason that it can't but it simply is not implemented. It doesn't matter that the XMC-1 accepts DSD over HDMI (You can use a SACD player like the Oppo to utilise that feature with SACD or DSD files) 4:33:16 GMT -5 markc said:At the risk of repeating myself, stop torturing yourself trying to find a solution!Ī computer (PC or Mac) currently CANNOT output a pure DSD stream over HDMI.
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