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RE: The Moncreiff stuff is a lot of nonsense

Posted by Tony Lauck (A) on February 16, 2015 at 19:14:21

In Reply to: The Moncreiff stuff is a lot of nonsense posted by Dave_K on February 2, 2015 at 16:25:13:

I would like to believe your analysis is correct. However, you should look at some of Thorsten's posts. This is a complex subject and "simplistic" analysis can sometimes be more useful than more sophisticated analysis, especially if the sophisticated analysis is made by people with skin in the game. This is not a simple issue. There is little published literature on the theory of DSD and those that exists say that the 1 bit format is flawed because it can not be properly dithered. DSD can work well, but it depends on a lot of "secret sauce" algorithms.

I tried to prove Thorston wrong. I failed. I was unable to convert a 44/16 Khz PCM signal to DSD and back to PCM and get close to 16 bits of accuracy, let alone the 20 bits claimed by Philips. I considered the peak errors, not a bunch of "averages". I was unable to get 16 bit accuracy even starting out with a DC signal. (I did this to avoid filtering issues.) I used a published DSD modulator. What I am saying is that the Philips information was marketing spin, not technical reality.

Tony Lauck

"Diversity is the law of nature; no two entities in this universe are uniform." - P.R. Sarkar

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