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Digital Drive Upsamplers, DACs, jitter, shakes and analogue withdrawals, this is it. |
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Digital Drive Upsamplers, DACs, jitter, shakes and analogue withdrawals, this is it. |
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In Reply to: RE: It would be a deal-breaker for me indeed.....to this reviewers credibility. posted by dave789 on January 2, 2015 at 19:30:00:
It is possible that two adjacent units off a production line might have a critical component from two very different manufacturing lots. This could account for a large variation in performance between two successive units. I know this from personal experience. I was managing a line of hardware products back in the 1970's and there was one unit that was poorly designed. It had a poor quality hardware design and the firmware was designed and coded by an incompetent dishonest man. (Obviously we didn't realize the full extent at the time, but later we wasted millions of dollars redesigning the product using a super-competent engineer who did both the hardware and firmware.) We built a pilot run of a few dozen units and tested them. The product appeared to work, not at full speed, but it did work. At that point we cranked up the manufacturing line. As soon as we started shipping products to customers we began to get complaints. All the pilot production units came from one lot number. Another lot number had slightly different timing performance and there was a race condition in the firmware that caused intermittent crashes. I remember this situation quite clearly, because it seemed rather mysterious at the time. Now, I would dismiss it completely as a possibility because over the years I learned to distinguish between two kinds of "engineers", those who don't know what they don't know and so run into problems and those who do know what they don't know and take steps to ensure their ignorance doesn't create problems.
Tony Lauck
"Diversity is the law of nature; no two entities in this universe are uniform." - P.R. Sarkar
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Follow Ups
- RE: It would be a deal-breaker for me indeed.....to this reviewers credibility. - Tony Lauck 01/3/1507:47:09 01/3/15 (0)
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