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| This Janet Jackson BASSLINE breaks laptops |
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| BrianHG:
--- Quote from: BrianHG on January 08, 2023, 12:13:39 pm ---Accelerometers with built in free fall detection is actually a big feature, like this one: https://www.st.com/resource/en/design_tip/dt0100-setting-up-freefall-recognition-with-sts-mems-accelerometers-stmicroelectronics.pdf Yes, some of the settings will directly trigger the interrupt output pin within a detected 50-100hz sweep. --- End quote --- Maybe I should buy one of these sensors, mount it on a small PCB & scope it with different settings playing Janet Jackson's song... |
| AVGresponding:
--- Quote from: EEVblog on January 09, 2023, 05:14:55 am --- --- Quote from: SiliconWizard on January 07, 2023, 09:01:24 pm --- --- Quote from: wraper on January 07, 2023, 08:49:14 pm --- --- Quote from: Benta on January 07, 2023, 08:43:25 pm ---I call bullshit as well. I read the story elsewhere (can't find it right now, sorry), but the point was that extremely agressive copy protection wreaked havoc on Win machines (as always). It's a Big Music plus Microsoft thing. --- End quote --- The story is not about DRM but about vibration at certain frequency causing HDD malfunction. FWIW HDDs are sensitive to vibration, so the story has some plausibility. --- End quote --- Yep. The less plausible part is that the laptop's speakers would have high enough output for low frequencies to cause any issue. Those tiny speakers usually have a pretty poor low-freq response. So it sounds pretty unlikely to be able to couple vibration with enough amplitude to cause damage to a hard drive. So yeah, not impossible but rather unlikely. But it's a funny story nonetheless. --- End quote --- Yep, I'm in that camp as well. Technically possible, but highly unlikely in practice. The hard drives would should have been vibrationaly frequency sweeped during operation to verify this isn't an issue. --- End quote --- FTFY... |
| BrianHG:
--- Quote from: AVGresponding on January 09, 2023, 06:09:20 am --- --- Quote from: EEVblog on January 09, 2023, 05:14:55 am --- --- Quote from: SiliconWizard on January 07, 2023, 09:01:24 pm --- --- Quote from: wraper on January 07, 2023, 08:49:14 pm --- --- Quote from: Benta on January 07, 2023, 08:43:25 pm ---I call bullshit as well. I read the story elsewhere (can't find it right now, sorry), but the point was that extremely agressive copy protection wreaked havoc on Win machines (as always). It's a Big Music plus Microsoft thing. --- End quote --- The story is not about DRM but about vibration at certain frequency causing HDD malfunction. FWIW HDDs are sensitive to vibration, so the story has some plausibility. --- End quote --- Yep. The less plausible part is that the laptop's speakers would have high enough output for low frequencies to cause any issue. Those tiny speakers usually have a pretty poor low-freq response. So it sounds pretty unlikely to be able to couple vibration with enough amplitude to cause damage to a hard drive. So yeah, not impossible but rather unlikely. But it's a funny story nonetheless. --- End quote --- Yep, I'm in that camp as well. Technically possible, but highly unlikely in practice. The hard drives would should have been vibrationaly frequency sweeped during operation to verify this isn't an issue. --- End quote --- FTFY... --- End quote --- For a HD, or anything else, sweep alone isn't enough, you need some chaotic white noise in there as well. |
| wraper:
At 6:50 Dave was able to sort of reproduce the error with more detailed results with a test tone a bit later. |
| Halcyon:
--- Quote from: tom66 on January 08, 2023, 11:43:02 am --- --- Quote from: BrianHG on January 08, 2023, 03:34:11 am ---Note, my HP laptop has an accelerometer feature for the HD protection which can be enabled/disabled in the advanced HP tools. I wonder if the music is just tripping such a protection feature in these laptops. --- End quote --- I think this is it. The video in Adam's video @1:33 shows the laptop powering off completely. If the HDD crashed, you might expect a lock up of the system or a BSOD, not a power down. I know that the accelerometer protection on my older Lenovo laptop powered the whole system down. Not sure why - maybe to provide more consistency for the user after a drop (a hung system is worse than a powered-off one?) --- End quote --- I'd suggest this is poor design, or something was wrong. Laptops are designed to be portable, moved, tilted, picked up or otherwise shoved about. I'd be pretty pissed if my laptop powered off every time I moved it. It would be going right back to the shop for a full refund. Hard disk interfaces (and operating systems) have for decades been designed in such a way that if there is a delay in accessing media, then the system will cope with that and simply wait. |
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