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Joined 2 years ago
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Cake day: June 13th, 2023

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  • Maybe the best way to think about it is not dark, but the absence of more light.
    On a DMD projector, we use tiny micromirrors for each pixel which flash thousands of times per frame of video.
    The flash/no-flash ratio decides how much light makes it out of the projector. This gives us over a thousand light levels per colour channel, from near dark, to full light.
    When the mirrors are not in position, the light output is very low. (1/1000th of the full output, on a projector with a static 1000:1 contrast ratio)

    The screen is designed to reflect light well, which means in a non-perfect room, it will have a light floor of the reflected ambient light, plus whatever still makes it through the projector (as Cygnus mentioned, room treatment).

    If you do treat a room well enough that the small amount of light that makes it through the projector at all-off is a problem, you can do things like fitting an ND filter to the lens (reducing the full light output, while also reducing the minimum).
    Or you can use the dynamic iris fitted to some projectors (which reduces the amount of light being put out based on the overall scene illumination, similar to the way LCD TVs lower the backlight level to “reach” contrast ratios of 100000:1).




  • I did it once a few years ago (IIRC with a copy of Falling Down by Muse, not for any particular reason), and compared V0 320 with FLAC.

    After amplifying the tiny, tiny wiggle of a sound that was left, I was left with very slight thin echoes, mostly well above 10k.
    The sort of stuff you really wouldn’t worry about, unless you 100% wanted bit-perfect reproduction, or wanted to justify a £2000 pair of headphones.

    Funnily enough, that was the point I stopped bothering to load FLAC onto my DAC, and just mirror everything into V0 for portable use.


  • I can only speak from a UK perspective, but most home ADSL/VDSL/Fibre providers don’t have limits, other than “if your usage is tanking the network, we’ll ask you to knock it off” type clauses.

    Most providers are also signed up to an agreement that if your speed drops 50% below the agreed speed on the package on average, they’ll either give you refunds, or let you out of the contract.

    The only ones that throttle are the bargain basement operators aimed at people who don’t care, and one otherwise very competent provider that for some unexplainable reason only gives 1TB by default, charging an extra £10 for 10TB.

    And I guess there is also a pricing step up to guaranteed bandwidth. For business use, they tend to be things like 1gbits headline, 500mbit guaranteed burst, 100mbit guaranteed sustained.







  • You will be truly British once you register on feddit.uk

    In seriousness, I like to think it’s a state of mind. If you find yourself generally aligning most with the more positive British attitudes, you’re British. Though living in Wales, you may end up feeling more Welsh eventually!

    If you want to feel more connected, try getting involved with local festivities and traditions.
    Explore the countryside with the Ramblers. Do some pub quizzes. Go to a folk festival.
    The sorts of things that involve you with pleasant people.