<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">It\u2019s interesting how similar the whistler waves sound (in a quick and low-volume listening, by me) to the sound of wrench-taps on large-antenna guywires. If I recall, the latter were the sound sample used for ray-guns in the early Star Wars movies. (I have no idea what was done later; maybe they kept and re-used the same samples.)<div><br></div><div>Is there a good reason the time-frequency distribution should be (auditorily, at low volume, to me) similar in the ionosphere-waveguide and tensed-steel media? I guess if I weren\u2019t lazy, this is a topic in my domains, and I could go try to answer that question myself.</div><div><br></div><div>Eric</div><div><br></div><div><br id="lineBreakAtBeginningOfMessage"><div><br><blockquote type="cite"><div>On Sep 11, 2025, at 2:47, Jon Zingale <jonzingale@gmail.com> wrote:</div><br class="Apple-interchange-newline"><div><div dir="ltr"><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;color:#333333">Wow, two decades ago. I wish more old people were like him.</div></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Wed, Sep 10, 2025 at 11:43\u202fAM Jon Zingale <<a href="mailto:jonzingale@gmail.com">jonzingale@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;color:rgb(51,51,51)">"""</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;color:rgb(51,51,51)"><pre style="">I found this entertaining, like all her videos:
Part 6: You cannot hear radio waves.
<a href="https://youtu.be/0j4_-7rwWjE?si=9XKhErO03LQLPgvp&t=3910" target="_blank">https://youtu.be/0j4_-7rwWjE?si=9XKhErO03LQLPgvp&t=3910</a>
I like the genre "noise". But some of my friends who are true fans have some perverse tastes in music. E.g. a couple of them *hate* what they call "noodling" ... like Joe Satriani or Yngwie Malmsteen ... mostly sounds like they're playing scales. They argue that chords and rhythm guitar, as well as drums, are way more interesting/entertaining to them. I find that somewhat contradictory. It just seems like you can't really be a fan of noise without liking noodling, at least when it's appropriate ... not gratuitous. But apophenia's a thing. So maybe noise is an ultimate art form, where the artist can intend anything she wants without constraining the audience in their imputation?
Composers *think* they're generating these things. But most mathematicians are Platonic. Maybe the composers are actually *discovering* music as opposed to generating it?</pre></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;color:rgb(51,51,51)">"""<br><br>Noise is so wonderful. The only genre.</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;color:rgb(51,51,51)">Honestly the album I have listened to the most over the last 5 years:<br><a href="https://www.youtube.com/watch?v=ISG4YwnikJ0" target="_blank">https://www.youtube.com/watch?v=ISG4YwnikJ0</a><br><br>Lately, two other favorites:</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;color:rgb(51,51,51)"><a href="https://www.youtube.com/watch?v=hWHLCHv4PiI" target="_blank">https://www.youtube.com/watch?v=hWHLCHv4PiI</a></div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;color:rgb(51,51,51)"><a href="https://www.youtube.com/watch?v=lZ5ZvVZ4jWk" target="_blank">https://www.youtube.com/watch?v=lZ5ZvVZ4jWk</a><br><br>The last one I learned about from Bill Lawvere when he and I had dinner in Toronto a decade or so ago. He was telling me that when he was a kid, he would go out into the woods with a military radio and listen to the whistler effect. He went on to make an analogy to Rota's generalization of mobius inversion. I thought it was really cool and so he sent me a copy of a lecture on it that he gave the day I was born.</div><div class="gmail_default" style="font-family:verdana,sans-serif;font-size:small;color:rgb(51,51,51)"><br></div></div>
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