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In Reply to: You can't....except... posted by theaudiohiffle on April 6, 2007 at 19:19:59:
<< I think some of the latest chips do allow bass management in DSD >>No. To do *anything* to the signal, it must first be converted to some form of PCM. You can then convert it back to so-called "DSD", but what would be the point of that?
Follow Ups:
...by using 4 bit or 8 bit DSD (which some will argue IS pcm, so you have some support). Point is, IIRC it is built into some of the newer "all-in-one" chips which don't require going out of dsd mode for bass managment. This same approach is used professionally in most recent version of the SACD workstations.
Harry
First of all "DSD" is a marketing term, and not a technical term. It was defined by the marketing gurus at Sony. And what they defined "DSD" as is one-bit digital audio at a sample rate of 64 Fs.Now you *cannot* do *anything* to this signal, even change the volume, without changing it to more than one bit. Then it is, by definition, no longer "DSD".
The marketing gurus from Sony painted themselves into a corner. They claimed all kinds of sonic miracles from "DSD" precisely *because* it was just one-bit.
But they can't have it both ways! If it is so wonderful because it is one-bit (as those who drink the Kool-Aid insist), then the very act of converting it to multi-bit (ie, PCM) must *by definition* destroy the wonderfulness of "DSD".
On the other hand, if converting "DSD" to PCM somehow does *not* destroy it's alleged sonic wonderfulness, then why bother with "DSD" at all? Why not just use PCM?
...one of the Wolfsens, as well as one of the Cirrus Logics. But I am not a technologist, so I could be mistaken....I am simply dealing from memory and hearsay.
Harry
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