• Posts
  • RSS
  • ◂◂RSS
  • Contact

  • Quiet Pennywhistle

    February 11th, 2014
    music, pennywhistle  [html]
    A while ago I posted that I had made a very quiet pennywhistle. Today I was thinking more about such things, in the context of what instruments to give to small children [1], and dug up this whistle:

    normal whistle, then quiet whistle

    You can hear it's much quieter than a typical whistle. Comparing it with my Generation and measuring SPL [2] I get:

    Low D Low G High D High G High B
    Generation 52 53 59 66 64
    Quiet 35 38 45 57 52

    (Compare to some other methods, but note that our measured numbers are in very different ranges.)

    The basic idea is to make the hole in the fipple much smaller than usual, and make the holes smaller as well. Ideally it would also be a smaller diameter, but that's the size of PVC tubing I could get.


    [1] It's not actually a very good fit for that purpose. It requires very careful breath control to make any noise at all, so someone who didn't already play whistles would probably get frustrated and bored without figuring it out.

    [2] SPL in dB at one meter measured with Sound Meter Lite on a Moto X, uncalibrated. Background noise registered 33dB, which means the low notes on the quiet whistle were barely loud enough to register and so are likely inaccurate.

    Comment via: google plus, facebook

    Recent posts on blogs I like:

    Economics: not as bad as I thought

    Also, it's not all about money. The post Economics: not as bad as I thought appeared first on Otherwise.

    via Otherwise May 13, 2022

    Buckingham Palace

    I love England. Especially because of the big castle called Buckingham Palace. I got to see the outside there, but my mom showed me some pictures of the inside. I love it there. But the outside doesn't look very fancy to me. But I never knew why those …

    via Anna Wise's Blog Posts April 25, 2022

    What is causality to an evidential decision theorist?

    (Subsumed by: Timeless Decision Theory, EDT=CDT) People sometimes object to evidential decision theory by saying: “It seems like the distinction between correlation and causation is really important to making good decisions in practice. So how can a theor…

    via The sideways view April 17, 2022

    more     (via openring)


  • Posts
  • RSS
  • ◂◂RSS
  • Contact