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In Reply to: Re: Oh, really? posted by Christine Tham on September 22, 2006 at 15:36:49:
... just to give you an idea that I do have some basis and background for what I'm talking about and am not just "making it all up".You seem to think that being able to measure the jitter of various transports connected to the same DAC is "essentially impossible." I would say it's actually relatively easy, provided you know what you are doing. I used to work for HP over ten years ago. The HP I knew made measuring equipment, amongst other things. I can assure you even ten years ago it was relatively easy to generate the different signals required to drive different transports - the measuring equipment should provide some hardware and software support for doing this. Heck, I was doing it over 20 years ago on different lift controllers, and we simply simulated the signals required using some assembly software I wrote on an 8088 PC and the parallel port (of all things).
Another hint: in the field of high bandwidth communications, particularly where channels are time- and frequency-multiplexed, there is already a LOT of understanding of jitter and how to deal with it. If you recall, Shannon's theorem was in the field of communications, not audio. The fact that buffering data does not eliminate jitter is already well established.
If you apply some of that knowledge into digital audio, it may provide some additional insights. I won't say further, but I do note that at least one manufacturer had hired a top notch communications engineer a few years ago.
Final hint: I know at one inmate who has actually done some of the things I was hinting about. He's very wisely staying silent in this conversation.
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Follow Ups
- Just a little bit more background ... - Christine Tham 16:26:51 09/22/06 (0)
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