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Computer Audiophile

Don Hills

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About Don Hills

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    Junior Member
  1. Does CA need Moderators - Volunteers and Votes

    Obligatory musical reference: "When the lie's so big" - Frank Zappa https://genius.com/Frank-zappa-when-the-lies-so-big-lyrics
  2. Yggdrasil Glitch Fixed

    Yes. So? I've been waiting for the other shoe to drop. Or was that it, simply an observation? If so, I apologise, I thought there was more to it. Anyway, Mike did what he said he did. Got rid of the glitch. If you repeat the measurement, you see the glitch isn't there any more. (I agree with Opus101, in theory it just got moved somewhere else, but good luck trying to find it by measurement.)
  3. Yggdrasil Glitch Fixed

    Yes. So?
  4. Yggdrasil Glitch Fixed

    Yes. So?
  5. Yggdrasil Glitch Fixed

    ''The secret to getting rid of a minute amount (-120db) of anomaly was a bit of offset added into our filter, which I had previously done at Theta Digital some thirty years prior to get rid of a significantly larger error. " - Mike Moffat
  6. Yggdrasil Glitch Fixed

    Your guess is correct - they added an offset in a digital filter.
  7. Civility

    I recall some discussion about the changes in 2.x. You ought to take a look over on HA and see if your concerns have been addressed. If not, you ought to mention them there.
  8. MQA is Vaporware

    Do you know if it's a decoder or just a renderer - will require a core decoder in the app? (I suspect renderer only.)
  9. No More Audiophile Hassles

    If food tastes flat and uninterestng without seasoning, it's actually a lack of distortion. You're tasting the food as it really is, not flavour enhanced. Likewise with audio. It's quite clear from the pursuit of "flavour" or "voicing" in audio equipment that the majority prefer it.
  10. MQA is Vaporware

    All of the dual-capstan Nakamichis had pressure pad lifters to keep the pressure pad retracted. They used differential capstan speed to maintain a consistent tape tension across the heads. I found Dolby B and C did work well on the 3-head Nakamichis, because they had enough HF bandwidth and tape level capability. Most decks had Dolby calibration level about +3dB, the Naks had it at 0 or -3 depending on the deck. I had 2 decks that I matched in level and response so that I could record on one deck, then move the tape to the other and have the levels and frequency response matched to less than 0.5 dB. Nakamichi helpfully included RC networks on the circuit board so that you could add/remove solder bridges to fine tune the responses. But as you point out, as soon as you moved the tape to a lesser deck with poorer HF frequency response, you may as well turn the Dolby off.
  11. MQA is Vaporware

    Encoding MQA audio includes splitting it into <24 KHz and >24 KHz. The coefficients of the Quadrature Mirror filter used for this are unknown. In theory, the effects of the filter are reversed when the two signals are re-combined by the matching filter in the Core decoder. If you are not Core decding, might part of what you hear be an effect of the splitting (encoding) filter?
  12. MQA is Vaporware

    Coming soon: MQA compatible USB cables.
  13. Note that it's mainly a client problem, not a server problem. In other words, it's the device that connects to your wifi router that more urgently needs to be patched. (But if the router is functioning as an extender / repeater, then it is acting as a client and is vulnerable.) Patching either the client or the server (device or the router) will prevent the attack. Details from the horse's mouth (the discoverer): https://www.krackattacks.com/
  14. Ripping music from the internet

    Not bad for 128kbps. Cymbals and bells are a bit swishy. Some flatulent synth in places, for example around 1:50 to 1:55, that could sound like distortion on some systems.
  15. Is Audiophiledom a confidence game?

    On the plus side, your flatulence would be more tuneful.