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In Reply to: 400 khz 24 bit posted by andyshedd on March 2, 2007 at 08:01:34:
Well, it is certainly possible to decimate a sigma delta bitstream generated by an ADC to 400kHz 24-bit.However, some would argue that it's better just to retain the original bitstream and send that directly to the DAC.
That was the original premise behind DSD and SA-CD. Of course, modulation rates now exceed 2.8MHz, so DSD (at least at 1X) is no longer state of the art.
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I'm just spouting numbers and phrases at this point but here is another article of interest...and a format that would definitely make use of the space on a blue-ray disc.
It's meant to be an intermediate editing format.The actual resolution is always constrained by the original sigma delta bitstream. DXD is a way of converting this bitstream into a representation that is easily editable, and for that purpose it's fine.
Another example of an intermediate editing format that's not intended for consumer delivery is DSD Wide.
But everytime you convert from one format to another (ie. DSD to DXD and back to DSD) you lose a tiny bit of resolution/information.
Now if DXD becomes widely accepted (currently it's only used by Merging in Pyramix) then potentially yes it would be nice to put it on bluray or whatever and avoid the conversion back to DSD. That is of course assuming that DACs out there can play it.
uncompressed super hd video? 3D holographic video? i'm sure someone will figure out a new format for these.
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