13 links have been added on 3 ideas about #harmony.
  1. Looks like it depends on the medium it is travelling in. I guess if there isn’t a medium, then there isn’t a “sound”, though I may be wrong. I found this on stack exchange though…

    “In a solid, the phonon frequency is periodic, since phonons are defined by lattice displacements. In this case, the maximum frequency is estimated by twice the inter-atomic distance over the speed of sound. this gives 20,000 Ghz as the limiting phonon frequency, again higher, because the speed of sound in solids can be 2-3 times higher, and (twice) the interatomic spacing is five times smaller than a liquid. So it is safe to put the upper limit of ultrasound in metals at 100,000 Ghz, and then only for small-atom metals. If you look at optical phonon bands, you can get frequencies like this over a wide range of modes.”

  2. An answer to a similar question on Quora brings up the question of if an audio frequency is beyond the range of hearing, is it actually classed as a “sound” or something else, such as a simple vibration. Quarks (probably) vibrate, right?

  3. Interesting idea. I was intrigued, so I emailed the well-respected physicist Dr Philip Moriarty about this and although I couldn’t get a definitive yes or no answer to the question (of if there is a highest pitch), he did provide a great link to further reading and a nice insight into what, if anything would limit a very high pitch sound wave travelling in air.

    “The question of a highest pitch is really intriguing… The ultimate limitation will be the response time of the medium: how quickly can the molecules/atoms transfer the energy? And that will depend, in a first approximation, on the mean free path of the molecules – i.e. how far they travel, on average, without being scattered by another molecule. And then there’s the question of the attenuation as a function of frequency.”

  4. Here’s the link to the book on Amazon.

  5. That idea is sort of dealt with here, have a look https://ideamill.info/there-is-no-highest-pitch-in-music/

  6. This version of The Scientist by Coldplay is said to be better than the one at 440. I can’t hear the difference (consciously) but some research says otherwise…

    “432 Hz gives a greater clarity than 440 Hz, there’s less need to play music in 432 Hz as loud as in 440 Hz. This means less hearing damage, as long as you put the volume not too high. It’s known that, for example, 90 dB gives hearing damage after 8 hours. Further there’s also less noise pressure with 432 Hz.”

  7. Hmm, sounds like this guy has adjusted more settings than just the frequency as I hear a totally different sound, maybe its a joke. I can’t tell.

  8. This article says its a conspiricy, but nah. Its just not tuned up to anything that really matters, our brains, the earth or the cosmos. Like the idea of trying to change it though, see where you get with that…