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Hearing is be-leafing: Students invent quieter leaf blower
  • I wonder if that shares the same physics as silvent's compressed air guns.

    Silvent’s air nozzles reduce the sound level when blowing with compressed air compared to blowing through open pipes. This is due in part to the reduction in noisy turbulence from using Silvent’s air nozzles, and also because of the nozzles’ special design. Silvent’s air nozzles pass the compressed air through small holes and slots, which raises the sound to frequencies beyond what the human ear can perceive. This allows us to make blowing with compressed air both quiet and efficient.

    Could use an even quieter compressed air gun

  • First human brain implant malfunctioned, Neuralink says
  • You don't even need to be inserting probes to be able to do that...

    OCZ had this 'toy' out in 2008.

    https://www.newegg.com/p/N82E16826100006

    one of the reviews...

    Ultra-sensitive, excellent response time. Partial hands free gaming. Cool looking blue LED glow from interface box. This is the future of computer user interface. While designed primarily for FPS games, works exceptionally well with MMOs. Makes Crysis WARHEAD and FarCry 2 a joy to play. As a disabled person, this unit has allowed me to game with all the "normal" folks on the same level.

  • iFixit hails replaceable LPCAMM2 laptop memory as a 'big deal'
  • A couple old metrology equipment dated back from the 80s I still use calls them 'mil'. It's got dual dials for mil/mm. Gets me confused sometimes because the gauge can go down to couple millionths of an inch/couple 10s of nanometers.

    LVDT for those curious.

  • Anon shows off Linux in class
  • From memory ..

    Select tool and draw circle.

    Select option menu then click 'to path'

    Unselect all

    Somewhere nearby there is a fill stroke to path or something.

    Yeah...I'm considering going over to paint.net or something else.

  • So uhh.. how often should I be washing me towels?

    Following the prior Lemmy post about towels...

    I wash once a week, is that sufficient or need I more frequency?

    70
    Mandatory security check followed by a long travel to area of work. When do you clock in?

    I'm in a situation with my manager who is suggesting that clock-in starts when the employee arrives to the site of work. Effectively saying that everyone should be coming in 15 minutes earlier than their start time.

    The majority of what I read online was about security checks when leaving the premises instead of entering. And the results of a couple class actions seem like the law has loose interpretation.

    Wondering what your experiences have been like dealing with this situation. Are you paid for your time traveling on company premises?

    For ref this takes place in California.

    17
    Nandert - 2023 Update on LA Metro Projects

    Nandert is in my opinion the best channel for Los Angeles county metro projects.

    2
    DT1900 PRO Found the source for creaking/rattling and a solution.

    I've owned the DT 1990 Pro for a couple years now and it's absolutely the best set of headphones I've ever used. But fairly recently the creaking issues that many other users reported have crept up to me.

    https://imgur.com/Tvxdfqa

    https://imgur.com/X9aIbz8

    https://www.head-fi.org/threads/beyerdynamic-dt-1990-pro-beyers-open-back-mastering-headphone.814629/page-93#post-13962732

    Basically anytime I moved my head around I would hear what sounded like a piece of plastic being rubbed against another piece and causing creaking noises. I tried to tolerate it but alas it was too much. ____

    The Problem

    The molded plastic of the earcup and the plastic frame of the driver are sitting in a way to cause minute rocking when the headband flexes the earcup from head movement. Imagine the outer plastic as an ellipse and the driver as a circle within the ellipse. The circular driver will be free to rock within the ellipse shape of the outer plastic. Even if the driver finds a point to settle, flex introduced into the cans via headband will cause distortion which forces displacement of the drivers causing creaking.

    Although, perhaps the driver isn't meant to be 'over-constrained'... To explain further, the retaining ring clips on to the earcup and compresses the foam pad and driver which also has a soft pliable material glued to rest against 3 prongs on the ear cup. This technically prevents the driver from flying about in the earcup. Where it gets over-constrained is from the frame of the driver making many many point/area contact around the earcup. Thus causing a binding condition to occur.

    _____

    Solution

    One purported solution was to loosen the two T6 flat head screws that hold the earcup. This reduces the amount of earcup flex caused by the headband which does reduce the amount of creaking but will not eliminate it all together.

    The solution then is to restrain the driver within the earcup in a way it wont creak.

    You'll need to take it apart to access the driver.

    Dissembly

    1. Remove the earpads, plenty of videos on how to do this but all it only takes a light pull to remove it. random 3min YT video

    2. Unclip the retainer. I found it easiest to wedge a flat head down into the smallest of the 4 tabs. Small push no prying. See image. https://imgur.com/20dG9Ma Once one came out the rest came out easily.

    3. Now you'll have access to the driver. Mind the location of the key and push down around the driver. It didn't take much force to cause the creaking. See image https://imgur.com/Qb4V1lJ

    On my particular headphone I noticed an up-down creak (relative to the picture).

    1. To remove the driver, place your hand over the driver in preparation to catch it then flip the earcup over. It should just drop out. A couple taps was necessary for me.

    2. Shim one side where the creaking was the worst. I chose to use a piece of teflon tape, it's thin and I suppose the reduced friction helps? The plastic frame of the driver is fairly skinny so I cut the tape in half.

    This is where you might have to take it differently since your earcup/driver dimensions&form(shape) will be different. I did consider taking a file to it and shaving off a bit around the perimeter so the driver isn't over-constrained but I didn't want to go that route unless necessary.

    1. Put it all back together. _____

    Conclusion

    It was fun looking for a solution. Root cause analysis is something I attempt do all the time as an R&D machinist.

    It's a huge relief to not have to put these headphones away either. Since these are the most priciest set I have.

    Let me know if this worked out for you.

    0
    [SoCal - SouthBay] Urgent Participation needed to overcome NIMBYs

    https://www.streetsforall.org/initiatives/south-bay-c-line-extension

    See the link above for more details.

    Sept 19 (Tuesday) - 6pm

    Redondo Beach City Council

    Sept 20 (Wednesday) - 1pm

    Metro Planning & Programming Committee

    Sept 21 (Thursday) - 11am

    Metro Executive Management Committee

    Please subscribe to nandert if you're interested about the politics behind SoCal railroads. I'm really fond of his channel because it's incredibly rare for a creator to be so knowledgeable about the local politics and measures going on. And many of his videos are a call-to-action unlike info dumps of other urban city planning youtube channels.

    0
    InitialsDiceBearhttps://github.com/dicebear/dicebearhttps://creativecommons.org/publicdomain/zero/1.0/„Initials” (https://github.com/dicebear/dicebear) by „DiceBear”, licensed under „CC0 1.0” (https://creativecommons.org/publicdomain/zero/1.0/)CU
    curiousPJ @lemmy.world
    Posts 5
    Comments 89