Superdad Posted March 26, 2018 Share Posted March 26, 2018 5 minutes ago, manisandher said: It's not 17/30, it's 9/10. The first two test were done 'incorrectly'. You could have gotten 10/10 or 100/100 and still there will be a bunch who will call the result statistically invalid or the test flawed. sandyk 1 UpTone Audio LLC Link to comment
Superdad Posted March 26, 2018 Share Posted March 26, 2018 Just now, manisandher said: The two 10kHz digital captures should be bit-identical because we didn't use the 'auto-record' function on the Tascam. 10kHz digital captures? I though you used music tracks. Please explain. UpTone Audio LLC Link to comment
Popular Post Superdad Posted April 11, 2018 Popular Post Share Posted April 11, 2018 2 hours ago, manisandher said: I know what I heard! Cut this out guys. Apply your thinking to how bit-identical playback can sound different... Mani. I wish the CA search engine worked right. Because I'm quite sure I made a post at the beginning of this thread predicting that no matter how well you passed the test the results would be rejected. Teresa, maxijazz and sandyk 3 UpTone Audio LLC Link to comment
Popular Post Superdad Posted April 13, 2018 Popular Post Share Posted April 13, 2018 12 hours ago, adamdea said: All that this means is that the test may produce results which are dac dependent. But that is inevitable. It certainly would be interesting to see whether it produced the same results with a benchmark dac which is, by conventional measurements, to all intents and purposes jitter immune. Well given how many Benchmark DAC owners (and owners of other DACs claiming to be immune from upstream vagaries) have reported improvements with our USB REGEN and ISO REGEN over the years, I’d say that “for all intents and purposes” they are not Immune. I have read most of this thread and frankly it appears that most here are missing the obvious which is that signal integrity matters and that small variations upstream cause perturbations in ground-plane noise and spikes in current INSIDE the DAC, causing a concomitant effect on the DAC master clock. Mansr or someone else suggested looking at variations in close-in phase-noise at the clock pin of the DAC chip. Long ago John Swenson measured variation in ground-plane noise, and he is setting up (building a 32-bit high speed ADC and capture system) for more advanced jitter analysis—both within the DAC and at the output—to prove the effect (with an injected jitter maker pattern that he calls the Golden Gate Bridge) of upstream clocking and other infections. We certainly won’t make any claims yet, but we are trying to use some new measurement methods (including wavelet analysis s/w) to at last validate some of the things which, while really not hard to hear, seem to have eluded conventional FFT, etc. look&listen, manisandher, PeterSt and 2 others 1 3 1 UpTone Audio LLC Link to comment
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