Recent content by kareface

  1. kareface

    Diffuser frequencies and listener distance

    Sorry. I've been working on a research paper the last few weeks that really enveloped my free time. Nothing like spending 30+ hours of work to not even put a dent into the paper. Most of the first few days was just collecting and sorting periodicals for citation. I finished the paper and I'm...
  2. kareface

    Baby proofing the Audio life - Any advice?

    Two words: Shock collar.
  3. kareface

    64 Cell (8x8) PRD (Skyline Diffuser) question

    The 2D PRD's are audibily different from the 2D QRDs, so yes, in the context of my statement they'll sound different.
  4. kareface

    64 Cell (8x8) PRD (Skyline Diffuser) question

    The differences in how they deal with phase it how the wave knows. If you alternate dramatic shifts in phase and small shifts in phase frequently it has a summing effect on the front which doesn't impact it the same way. There's a huge difference between how a PRD and QRD work, it's dramatic...
  5. kareface

    64 Cell (8x8) PRD (Skyline Diffuser) question

    Good to know. Sarcasm doesn't translate well online, lol. :)
  6. kareface

    64 Cell (8x8) PRD (Skyline Diffuser) question

    The word theory and theoretical mean very different things inside and outside the scientific domain. People outside of the scientific community use the term theory as if they mean hypothesis. In reality a theory is the highest level of understanding allowed in science. We would be discussing...
  7. kareface

    64 Cell (8x8) PRD (Skyline Diffuser) question

    It would be a hypothetical :P I'm not sure about that. QRD's tend to shift the wave front, and their patterns represent the shift in phase necessary to bend it. PRD's don't bend the wave front in the same manor, the pattern is too erratic for small and varying shifts in phase to manipulate...
  8. kareface

    64 Cell (8x8) PRD (Skyline Diffuser) question

    As am I, but it seemed more akin to a QRD seeing how most PRD's don't use cell walls, can't be 3x3, and usually have more variation in the cell heights. The pattern doesn't match the traditional design, but my thought was If there is a way of generating alternate permutations for PRD's there...
  9. kareface

    Recommend room treatments for the mini room I call "my dedicated listening room"

    I really don't trust the tube traps. I'm sure they work great as traditional absorbers, but I doubt they work as advertised. I really wish they could provide some data on the traps with an without a sealed cavity, because I don't believe they are any more effective than a normal lump of...
  10. kareface

    64 Cell (8x8) PRD (Skyline Diffuser) question

    I actually didn't use QRD dude, I just have an excel file. They are all symmetrical, except when shifted, then they are no longer symmetrical. They are literally called asymmetrical N5 2D QRD panels. Only 2 of the possible constant values will produce symmetrical results. Your statement is...
  11. kareface

    64 Cell (8x8) PRD (Skyline Diffuser) question

    That's false, QRD's do not need to be symmetrical. 2D panels modulated - nine asymmetrical N5 2D QRD panels with three rotated. You can shift the position of the pattern, test it out with any 2D QRD generator.
  12. kareface

    Audioguy HT and 2 Channel Room (Combined)

    Audioguy, just a tip. You shouldn't keep your panels all facing the same direction. You should use the barker code to alternate them a little to prevent repetition effects. :)
  13. kareface

    Why Some Audiophiles Fear Measurements

    One of the most interesting theories on IC's I've heard was magnetic coupling from return current traveling via. line cord ground instead of the IC's shield. With out the return current, coupling occurs, it'll be frequency dependent, and it'll vary depending on the IC and the ground impedance...
  14. kareface

    Why Some Audiophiles Fear Measurements

    Everyone should use their ears. The problem with audiophiles isn't their ears, it's their eyes. If you really only used your ears, no one would be complaining. However very few audiophiles actually preform blind comparesons. I trust your ears to tell you what you like, I just don't trust...
  15. kareface

    Why Some Audiophiles Fear Measurements

    Of course you should listen to your hardware to make the final decision. No one is saying you shouldn't. I think what people are saying is take the bias out of the decision. Setup a blind test with a friend making the swap and see which one you really prefer. No matter how much you trust...
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