Comment on Anon reflects on e-sports

• RightHandOfIkaros@lemmy.world ⁨2⁩ ⁨weeks⁩ ago

  This only happens with TVs or very low quality monitors. The flyback transformer vibrates at a frequency of ~15.7k Hz which is audible to the human ear. However, most PC CRT monitors have a flyback transformer that vibrates at ~32k Hz, which is beyond the human hearing range. So if you are hearing the high frequency noise some CRTs make, it is most likely not coming from a PC monitor.

  Its a sound thats a part of the experience, and your brain tunes it out pretty quickly after repeated exposure to it. If the TV is playing sound such as game audio or music it becomes almost undetectable. Unless there is a problem with the flyback transformer circuit, which causes the volume to be higher than its supposed to be.

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  • systemglitch@lemmy.world ⁨2⁩ ⁨weeks⁩ ago

    There is not one crt I ever encountered that I couldn’t hear. So I’m having trouble believing you information.

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    • RightHandOfIkaros@lemmy.world ⁨2⁩ ⁨weeks⁩ ago

      en.m.wikipedia.org/wiki/Flyback_transformer

      Under “Operation and Usage”:

      In television sets, this high frequency is about 15 kilohertz (15.625 kHz for PAL, 15.734 kHz for NTSC), and vibrations from the transformer core caused by magnetostriction can often be heard as a high-pitched whine. In CRT-based computer displays, the frequency can vary over a wide range, from about 30 kHz to 150 kHz.

      If you are hearing the sound, its either a TV or a very low quality monitor.

      Either that or you’re a mutant with super ears and the US military will definitely be looking for you to experiment on.

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      • errer@lemmy.world ⁨2⁩ ⁨weeks⁩ ago

        I’ll defend this guy: there can easily be a harmonic at half the flyback frequency that is audible. It’s lower amplitude so less loud, but I could believe someone being able to hear that.

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      • systemglitch@lemmy.world ⁨2⁩ ⁨weeks⁩ ago

        Please don’t tell them about me.

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      • systemglitch@lemmy.world ⁨2⁩ ⁨weeks⁩ ago

        On a side note, I can also hear when a capacitor is going bad on an lcd when other people around me cant hear it.

        It could be something else in the crts I’m hearing, but I can definitely tell one is on without seeing it. It’s been like this since the 70s for me.

        I can also smell and taste things other people can’t, so something is a little different in my brain somehow.

        My partner and daughter tell me I have super powers lol. Guess who gets to smell meat for rot? Not them! Bleh.

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    • deltapi@lemmy.world ⁨5⁩ ⁨days⁩ ago

      I could hear them too, when I was younger. I lost that frequency range of my hearing in my mid-to-late 20’s, which I’ve read is normal.

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  • julianh@lemm.ee ⁨2⁩ ⁨weeks⁩ ago

    Oh neat, thanks for the explanation! That makes sense as most of my crt exposure for the past 10 years has been classroom TVs and museum exhibits.

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• SkaveRat@discuss.tchncs.de ⁨2⁩ ⁨weeks⁩ ago

  the solution is to be in your mid-30s

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  • NakariLexfortaine@lemm.ee ⁨2⁩ ⁨weeks⁩ ago

    Unless you have tinnitus.

    Then you’re possibly going to hear it very frequently.

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    • SkaveRat@discuss.tchncs.de ⁨2⁩ ⁨weeks⁩ ago

      you could say in a…

      high frequency

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      • TwigletSparkle@lemmy.blahaj.zone ⁨2⁩ ⁨weeks⁩ ago

        youtu.be/7uW47jWLMiY

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    • Gork@lemm.ee ⁨2⁩ ⁨weeks⁩ ago

      eeeeeeeeeeeeeeeeeeeeeeee

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      • chocosoldier@lemmy.blahaj.zone ⁨2⁩ ⁨weeks⁩ ago

        and here i’d been blissfully unaware of it for days now. damn you all.

        (wear earplugs to concerts kids, especially if you’re playing)

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• systemglitch@lemmy.world ⁨2⁩ ⁨weeks⁩ ago

  Ditto, lcd’s were a godsend.

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• nadiaraven@lemmy.world ⁨2⁩ ⁨weeks⁩ ago

  eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee

  (me too)

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• SpaceCowboy@lemmy.ca ⁨2⁩ ⁨weeks⁩ ago

  For me it was the refresh. If a CRT was at 60Hz, I could see it flashing when I wasn’t looking directly at it. I had to have it set to at least 75 Hz (>80 Hz preferably) or it would give me a headache.

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• seliaste@lemmy.blahaj.zone ⁨2⁩ ⁨weeks⁩ ago

  This and the scanlines actually make it feel so weird to look at for me, I hate crts with a passion

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