Thread: What is DSD?

Posts: 9
Post by sammyh June 21, 2010 (1 of 9)
Please Help. I am confused. Is DSD, "pulse density modulation" pdm, or "differential pulse code modulation" dpcm?
Post by Claude June 21, 2010 (2 of 9)
Post by sammyh June 21, 2010 (3 of 9)
The confusion is 1bit or delta modulated pcm.

http://en.wikipedia.org/wiki/DPCM
Post by DSD June 21, 2010 (4 of 9)
Issac DSD is 1 Bit, see "Super Audio Compact Disc A Technical Proposal"
http://www.superaudiocenter.com/images/dsd.pdf
Post by sammyh June 21, 2010 (5 of 9)
http://einstein.informatik.uni-oldenburg.de/rechnernetze/dpcm.htm

Maybe DSD is based on 1bit DPCM instead of 1bit PDM.
Post by audioholik June 21, 2010 (6 of 9)
sammyh said:

The confusion is 1bit or delta modulated pcm.

http://en.wikipedia.org/wiki/DPCM
Every new PCM dac is delta sigma modulated pcm.
Post by sammyh June 21, 2010 (7 of 9)
audioholik said:

Every new PCM dac is delta sigma modulated pcm.
Oh i see.Thanks for solving this problem(confusion).
Post by audioholik June 21, 2010 (8 of 9)
sammyh said:

Oh i see.Thanks for solving this problem(confusion).
no problem, in short: DSD is based on delta sigma and PCM is in fact based on delta-sigma.
Post by audioholik June 21, 2010 (9 of 9)
DSD said:

Issac DSD is 1 Bit, see "Super Audio Compact Disc A Technical Proposal"
http://www.superaudiocenter.com/images/dsd.pdf
Thanks for the link.

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