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RE: It's not relevant

The output streams of those players may be identical if they are considered as bits, e.g. if they are transcribed as a pattern of 0's and 1's to a memory buffer. However, if the output stream is examined as a continuous electrical waveform, there may be differences. You won't see these differences by looking at the memory buffer in the DAC, but you may be able to see them by looking at the waveform on the cable using a high resolution storage scope. The tools used in the article were looking at the pattern of bits, not at their physical representation. However, a DAC doesn't work with abstract bits. It works with a physical representation, and depending on its design and construction this physical representation may have a significant effect on the DAC's output.

Here's an example of two bit streams that contain identical "bits".

01101101101
01101101101

As you can see, there are identical sequences of digits, but their physical representations on your computer screen are not identical.


As to nothing changing, something always changes. No two objects or events in this universe are ever identical, but even if they were, our perception of these events would differ, if only because of our differing mental states.


Tony Lauck

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

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