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In Reply to: I Forgot to State.... posted by Todd Krieger on February 25, 2007 at 01:06:33:
HowdyI don't base my understanding on the data sheet from a manufacturer. I worked with the people who originated the current ASRC algos that many of the manufacturers use and also I have taken classes in school where this stuff (e.g. SSRC) is considered elementary. I have implemented both for myself as well as for companies I've worked for. I strongly recommend that you take a class or two or at least implement some of this stuff for yourself to get a better idea what's going on before you spread more unfounded rumors about this stuff.
I'm sorry that I also didn't make it clear that if there are two clocks that if they are not synchronized (i.e. that in the long term the ratio of the clock rates doesn't exactly match the ratio of the sample rates to the nat's ass) then you have to do ASRC conversions or worse.
-Ted
Follow Ups:
It almost looks like the root of our disagreement is over the "soundness" of ASRC for audio playback. You think the it's a true advancement. I think it's a technological fraud.I tried explaining why it's a technological fraud. The only other thing I will say is I cannot stand how it sounds.
By the way, the Lavry accusations are mostly speculation. The nuts and bolts of what's going on are not established, and I generally just avoid such feuds, unless I see something factually wrong or something factually true claimed to be wrong. But hardly anything there is factual, just merely speculative. (It's hard to figure out speculation, because it's hardly ever concept put into writing.) I presume Dan will explain the story, and I'm 99 percent certain his DAC in normal playback does *not* use ASRC. (This is something that I'm certain would pass a DBT, if it comes down to that.)
HowdyYou are putting words in my mouth. I've stated over and over that tho I'm not a fan of ASRC in principle, I have and know of DACs that use it that sound fine.
There are more than one source (including Lavry) that talk about the components actually used. Go look at the data sheets. It's not speculation. As with all technologies there trade offs one to another and in addition there are good and bad implementations.
-Ted
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