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idiot_savant

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  1. Ah, that’s the thing - I believe a drive can be recoverable but not infinitely improbably recoverable. Or something. your friendly neighbourhood idiot
  2. As much as I find the bucket analogy painful, yes - if you put in way too much stuff, it overflows, that water is lost down the side. If your bucket/FIFO has no hole, it will certainly be quiet… your friendly neighbourhood idiot
  3. @pkane2001 - funnily enough, I was collating evidence and proof he was funny, but I accidentally triggered my infinite improbability drive and all was lost… your friendly neighbourhood idiot
  4. He was very funny - a tragic loss, there can be no argument about that? Understood ( mostly ) the science your friendly neighbourhood idiot
  5. Erm, is it just me, but is this really appropriate for this forum? I think we can all agree philosophy is not objective? Any Douglas Adams stuff always welcome Your friendly neighbourhood idiot
  6. To put it another way, and this is the classic analogy: You’ve got a bucket with a hole in it - you pour water in, some time later water comes out. If you put your hose filling the bucket at its maximum, the bucket starts to fill, and the water on the top will take longer to get through ( because of all the water already in the bucket ). Stop the hose, and the bucket will empty. your friendly neighbourhood idiot
  7. @semente - so here we go-FIFO means First In First Out. It is a buffer, but with particular properties. At the basic level, a FIFO has something that writes into it ( let’s say an SPDIF receiver, “I’ve got a sample” ) and something that reads from it ( let’s say a DAC , “I need a sample” ) So the idea of it is if say your thing *writing* varies in time a bit, the FIFO takes up the slack so the thing reading never notices - so it takes care of short term timing variations. our designer has to work out how much variation there is likely to be against how much dela
  8. Hi, linear interpolation doesn’t add *any* delay - in the Chord, it will be the FIR filtering adding the delay. In a NOS DAC, what processing is going on? It *looks* like a FIFO, which is why we’re trying to look at what’s going on. A FIFO is generally a good thing, but adds delay, so the question is why so much delay, and so variable? your friendly neighbourhood idiot
  9. Poking about AP website: https://www.ap.com/technical-library/continuously-repeating-apx-measurements/ your friendly neighbourhood idiot
  10. Deep. Can we prove black is white and get killed on a zebra crossing?* your friendly neighbourhood idiot *HHGTG, sorry probably not even the right quote, but couldn’t resist 😉
  11. That level of precision is plenty good enough, thanks! I should probably reiterate this *might* be OK in audio terms ( I think the video use case has been ruled out either way ) - but does the latency saturate ( i.e. get to a number of milliseconds ), wrap round ( i.e. jump back to a low number ), continue increasing forever or start reducing? All interesting stuff, and thanks again! your friendly neighbourhood idiot
  12. Hmmm, interesting - can you offset the AP sample rate? If you can, add an offset of 10ppm ( or 44100.441Hz ) and see what happens? thanks for looking into this! your friendly neighbourhood idiot
  13. OK, so I think we could have 2 issues here, which we should try to separate: Issue 1 : seemingly quite a big variation in latency between inputs changing or going away. Issue 2 : latency seeming to increase over time. issue 1 is not great and will irritate people trying to watch video, but apart from that, nothing to see issue 2 is more problematic in terms of what’s going on - *how* is the latency increasing? At what rate? Is there a maximum and minimum? so, if you could just leave it running the continuous sweep doohickey and look at laten
  14. My concern here is that latency growing over time is actually a sign of a lack of a PLL… be interesting to see if there is an upper limit. Oh, one other thing to check - with a 1kHz tone, does the AP measure it as 1kHz? your friendly neighbourhood idiot
  15. Unfortunately no, as the player at present doesn't support optimization for external usb drives Why not? as for wear, the “scintillate” process doesn’t write a huge amount of data your friendly neighbourhood idiot
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