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  1. castleofargh

    Matching headphones and amps. Is it a scientific process?

    I have no idea ^_^. I'm guessing it's primarily about fidelity, as any energy from the signal that is not moving the diaphragm is a loss/distortion for that signal. But I could be wrong.
  2. castleofargh

    Matching headphones and amps. Is it a scientific process?

    That output can also be used with a "bass shaker" you place on your chair or on yourself.
  3. castleofargh

    Matching headphones and amps. Is it a scientific process?

    AFAIK, IEM designers tend to work toward limiting shaking. A typical example would be to use 2 BAs side by side, but one rotated 180° on the nozzle's axis, so that while the total SPL is increased at the output(aiming for lower distortions at the same SPL), the lateral movements of the plates...
  4. castleofargh

    How do you measure sound stage?

    I think @sander99's post brought up most of the relevant parameters. Sound localization is fairly simple in design. It's our ears working as 2 microphones, and then the brain using differences it managed to correlate with seen positions(because sight is what the brain trusts most, even though...
  5. castleofargh

    Apodizing filter

    Some products are just for different markets. I heard a guy making catamarans and explaining how their stuff had a hard time penetrating some markets, the US because Americans often tried to purchase American(not a rule, more like a trend), and the rich Arabic countries because their catamarans...
  6. castleofargh

    Testing audiophile claims and myths

    Kind of both. It's a matter of what you're looking at. For the amplifier, if you plug a 4ohm IEM and a 3ohm cable, the amp deals with a higher load which is usually welcomed news for the amp and how it measures. If the cable is 0.6ohm, perhaps now the amplifier struggles too much into that tiny...
  7. castleofargh

    Matching headphones and amps. Is it a scientific process?

    We aim for 115 or even 120dB SPL simply because it's the output level that is painful. So we assume that nobody will wish to use their headphones louder than that. If you have different needs, you're welcome to set a different target level for yourself. I listen to music very quietly, I often...
  8. castleofargh

    Will playing FLAC files wear quickier my DAP and my iem?

    MP3 (128 kbps), 30 hours, 25 hours. AAC (256 kbps), 27 hours, 23 hours. FLAC (96 kHz/24 bit), 26 hours, 23 hours. FLAC (192 kHz/24 bit), 23 hours, 20 hours. DSD... From the manual for nw-ZX300 and ZX300A(the 2 values are for the respective DAPs) Those values are while playing continuously screen...
  9. castleofargh

    Objective science, engineering, and business

    I'd go with ignorance(of the designer, making him believe in his original ideas), then opportunism, and last, a sort of "why do it? Because we can!". That last group includes dumb stuff but also pure search for extra fidelity, even if out of reach for human senses. I wish I had videos of my dad...
  10. castleofargh

    Testing audiophile claims and myths

    I'm so glad anytime I see that one still working(as the original source went down). I think I still have it somewhere saved on a hard drive as a web page, but I never uploaded it so it could be shared. Good guy Alexy did it, whoever he is.
  11. castleofargh

    Apodizing filter

    It's a deliberate choice to prioritize one aspect of a signal over another. Some try to get what the math tells them to get(very hard filter to attenuate the higher frequencies not recorded, as much and as fast as possible). One extreme of that would be Chord Electronics for example. Some go for...
  12. castleofargh

    Testing audiophile claims and myths

    Reason one: Second reason: He does contribute a lot. I don't remember you helping someone with a question, or sharing interesting information on a topic in this section. He did and does it a lot. I do remember you cheering anybody going against gregorio, and insulting him. That's what I...
  13. castleofargh

    Testing audiophile claims and myths

    Again with the attacks on Gregorio? Is it all we can hope to see you post in here? The diva that was virulently doing the same has been shown the door. You're going to be next soon if you keep this up. Couldn't you disagree without the insults? Or better yet, try to read his posts not to find...
  14. castleofargh

    Testing audiophile claims and myths

    You're right, I went for something else(the problem of the wandering mind ^_^). I get your point, and of course there are very many audio cues that just about anybody notices, with nobody asking to prove that it was real. It's typically a matter of magnitude and common knowledge about hearing...
  15. castleofargh

    Testing audiophile claims and myths

    No amount of people having a belief should turn that belief into an objective fact. You will find groups of people believing in just about anything, including clearly impossible stuff. We need more than a bunch of people and a common belief to establish facts. About clouds in the sky, You're...
  16. castleofargh

    If you still love Etymotic ER4, this is the thread for you...

    Off topic: Seems like you landed on your feet quite fast. Can we know in what capacity you joined ZMF(hoping for spoilers but also genuinely curious)?
  17. castleofargh

    Anyone into crossfeed?

    Crossfeed stands in the middle of the road. It doesn't exactly fix the stereo of headphones and IEMs(one channel only reaching one ear, which is objectively unnatural to a human). It's a fairly generic term to describe quite a range of products and settings, so those who tried maybe one or 2 are...
  18. castleofargh

    Anyone into crossfeed?

    And you have to consider that binaural recordings aren't using your HRTF, usually it's a dummy head, and sometimes just 2 mics in parallel. So even between binaural recordings, some will work better than others for you. And of course, the more degrees of customization toward your own HRTF you...
  19. castleofargh

    How to volume match phono preamps?

    With most RTAs(real time analyzer) there are options to graph more than just instant levels, I think that might work to check the level of a song or sample of a song, and adjust based on it for 2 devices. If that's no good, there is always the option to graph for peak amplitude at each...
  20. castleofargh

    Testing audiophile claims and myths

    I think you want to go look into just about any paper with Steve Temme as an author or coauthor. Anytime they speak pure math, my brain brings up the monkey on a bicycle, but I remember finding...
  21. castleofargh

    Testing audiophile claims and myths

    The idea of testing audibility for something specific is, at least as a scientific approach with the purpose of demonstrating something as a fact, about doing the best we can to remove anything that might not be about what we're testing. It goes against that very principle to introduce more...
  22. castleofargh

    Noob question about headphone cable connection terminals?

    There's always just one channel going into one driver(the signal for the left channel going to the left driver). Maybe you're talking about headphone connections showing more than 2 contacts on one side? Those can be a number of things depending on the type of driver, but it's not stereo sent...
  23. castleofargh

    HELP!

    Before that, I'm guessing there is a dedicated thread, even if only an appreciation thread for that device. The various owners might be more aware of issues and what to do about it.
  24. castleofargh

    Testing audiophile claims and myths

    Everybody wants that, no matter the side of the argument. The difference comes with how to handle the fact that human experience is more than just listening. Some embrace it all, they accept that whatever influences will happen and just go with the flow (what I would call a real subjectivist)...
  25. castleofargh

    Recording Impulse Responses for Speaker Virtualization

    I don't believe that THD is very meaningful for subjective experience (until the values explode), but I suspect some simple testing errors if someone came to the conclusion that IEMs at large have lower distortions than full size headphones. It's probable that the measurements got drowned in...
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