macOS does this too; if you trigger Siri while your fans are spun up, it’ll temporarily spin them down to hear you more clearly.
visionOS thermally throttles based on how much it hears the fans in the mics
31–40 of 53 posts
Re: visionOS thermally throttles based on how much it hears the fans in the mics
#32Why use mics for that if they have direct access to rpm of fans?
Because the RPM of a fan is not a 100% reliable indicator of its loudness. Sometimes a lower speed can even be louder than a higher one, because of certain resonances...
Re: visionOS thermally throttles based on how much it hears the fans in the mics
#33Earlier quoted context omitted.
It is a machine you literally have on your head. I have not tried it, but I can believe that it requires some different UX considerations than normal computers. I would definitely not like to hear fan noise vibrating through my head.
Wait till you experience visual stutter in VR then...
There's a reason why the Vision Pro has separate chip that handles the real-time passthrough from cameras (and bunch of other sensor-fusion stuff, AIUI).
Re: visionOS thermally throttles based on how much it hears the fans in the mics
#34Earlier quoted context omitted.
It seems a mis-prioritization of the kind that makes me dislike Apple products. To avoid the imperfection of a bit of fan noise, throttle the entire experience. Great.
Being purely subjective if the user is less likely to notice the throttling than they are the fan noise, then it seems like the right call.
That's true. If they're doing a clever balance then it seems good.
Re: visionOS thermally throttles based on how much it hears the fans in the mics
#35Earlier quoted context omitted.
Being purely subjective if the user is less likely to notice the throttling than they are the fan noise, then it seems like the right call.
That really depends on what the effects of the throttling are. Stronger foveation or other rendering quality drops? Probably OK. Frame rate dropping below 75? Not in VR, never...
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Re: visionOS thermally throttles based on how much it hears the fans in the mics
#36Another trick is not to use constant RPM because you can hit some mechanical resonance point, but constantly varying RPM around target RPM so that the system even if it hits resonance stays there only for a brief moment and won't start vibrating.
Offtopic: constantly varying RPM across a resonance point might not be a good idea, it was exactly what blew up Sayano-Shushenskaya Dam.
Re: visionOS thermally throttles based on how much it hears the fans in the mics
#37"Bug Report: My framerate significantly drops in Microsoft Flight Simulator for Vision OS but only when not using headphones"
Re: visionOS thermally throttles based on how much it hears the fans in the mics
#38Why use mics for that if they have direct access to rpm of fans?
Because the RPM of a fan is not a 100% reliable indicator of its loudness. Sometimes a lower speed can even be louder than a higher one, because of certain resonances...
Presumably, knowing the fan you've installed into the device you've designed, you could map those noisy areas...
Re: visionOS thermally throttles based on how much it hears the fans in the mics
#39Earlier quoted context omitted.
Sounds like a recipe for Heisenbugs.
I can certainly see things like this causing a lot of unintended consequences. "It speeds up when I play loud music" is going to confuse many who don't know about this "feature".
“If you play the music loud, your fps will increase!”
Re: visionOS thermally throttles based on how much it hears the fans in the mics
#40Earlier quoted context omitted.
The goal is probably not to absolutely manage cooling but to focus on the audio experience and try to keep noise below some threshold. I think that's an interesting idea, even if not everyone might be happy with the tradeoff (comes down to how much you care about noise vs getting throttled), especially for a vr device.
It seems a mis-prioritization of the kind that makes me dislike Apple products. To avoid the imperfection of a bit of fan noise, throttle the entire experience. Great.
Fine, their products are not made for you.
But they're a trillion dollar company because of their relentless focus on the end-user experience which you happen to dislike, but which most people love.