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  • Spectral lines coming from the tap

    From michael.r.sabino@gmail.com@21:1/5 to All on Fri Nov 4 21:57:35 2016
    Aside from the normal strong 60 Hz and 120 Hz lines from pump motors or nearby wiring, I notice several broadband noise lines in the 1-2kHz band coming from the tap. Any idea what these are from? https://s12.postimg.org/9lxltsja3/waterfaucet.png

    Thanks,

    Michael Sabino

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  • From Scott Dorsey@21:1/5 to michael.r.sabino@gmail.com on Tue Nov 8 11:02:57 2016
    <michael.r.sabino@gmail.com> wrote:
    Aside from the normal strong 60 Hz and 120 Hz lines from pump motors or nearby wiring, I notice several broadband noise lines in the 1-2kHz band coming from the tap. Any idea what these are from? https://s12.postimg.org/9lxltsja3/waterfaucet.png

    Thanks,

    Michael Sabino

    This is off an accelerometer put on a water faucet? Likely it's whistling
    in the pipes... put your head to the faucet while it's turned off and some other faucet in the building is turned on and you can likely hear it.
    --scott
    --
    "C'est un Nagra. C'est suisse, et tres, tres precis."

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Ange@21:1/5 to michael....@gmail.com on Tue Dec 20 10:54:30 2016
    On Saturday, November 5, 2016 at 12:57:36 AM UTC-4, michael....@gmail.com wrote:
    Aside from the normal strong 60 Hz and 120 Hz lines from pump motors or nearby wiring, I notice several broadband noise lines in the 1-2kHz band coming from the tap. Any idea what these are from? https://s12.postimg.org/9lxltsja3/waterfaucet.png

    Thanks,

    Michael Sabino

    The water valve orifice is acting as a "jet-edge whistle" http://citeweb.info/19530009481

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Scott Dorsey@21:1/5 to a.campanella@att.net on Wed Jan 11 13:58:35 2017
    Ange <a.campanella@att.net> wrote:
    On Saturday, November 5, 2016 at 12:57:36 AM UTC-4, michael....@gmail.com wrote:
    Aside from the normal strong 60 Hz and 120 Hz lines from pump motors or nearby wiring, I notice several broadband noise lines in the 1-2kHz band coming from the tap. Any idea what these are from? https://s12.postimg.org/9lxltsja3/waterfaucet.png

    The water valve orifice is acting as a "jet-edge whistle" >http://citeweb.info/19530009481

    Indeed. I can close my eyes at night and hear plumbing sounds conducted from other parts of the building. It's like a big musical instrument.
    --scott
    --
    "C'est un Nagra. C'est suisse, et tres, tres precis."

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)