Smalahundur Posted October 6, 2018 Author Report Share Posted October 6, 2018 Yeah, I know what you meant. The sound generated by a shepherds whistle is afaik based on so called Helmholtz resonance. I have not found analysis of the shepherds whistle sound but I did of another Helmholtz resonator; a tea kettle. This shows a lot of ultrasound being generated, so that may also be the case for shepherds whistles , though they are of course of rather different dimensions than a kettle. Here is the link, way too technical for me btw; https://engineersportal.com/blog/2017/9/24/acoustic-signature-of-a-tea-kettle Quote Link to comment Share on other sites More sharing options...
Donald McCaig Posted October 7, 2018 Report Share Posted October 7, 2018 Dear Smalahundur, "Donald" or "Mr. McCaig" suit. I wince at "Don". In my corner of rural southern Appalachia, if I work for you, I'm "Donald" and you're "Mr.". High status individuals are "Mr. Donald" or "Miss Anne". After a lifetime a few become "Uncle Donald". I'm not him but my wise wife is "Aunt Anne". When I was trialing I found it useful to sharpen my whistles by practicing when I was driving somewhere w/o a dog. Donald Quote Link to comment Share on other sites More sharing options...
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