Nature of Music, Part 3 - Resonance in Air

[@SquealyD]

another beautifully crafted video Josh!

[@joshbennettmusic]

Thanks Lins. And thanks for your help with it!

[@iantpt]

As clear and succinct an explanation of the differences between open v closed pipes, straight v conical bores, and the trickery of flared tubes as you'll find. Great vid Josh, thankyou.

[@joshbennettmusic]

Glad you liked it, Ian

[@tristanludowyk9579]

nice cameo from nuggetman!

[@joshbennettmusic]

And his extra hand!

[@ParvynMusic]

Great animation and explanation. I love that you're doing this and I'm learning heaps! :)

[@joshbennettmusic]

Glad to hear it!

[@tristanludowyk9579]

thought i'd better watch this now, to get ahead of the plebs at 9am

[@tristanludowyk9579]

what were we hearing with the sax animation, where the cylinder became a cone? it didn't seem to match the spectrogram. but it sounded like as the medium became more conical the fundamental rose in pitch, and so did the harmonics, until they were all filled in? also, love the animations of the particles through the trumpet valves - nice work josh!

[@joshbennettmusic]

The harmonics all shift by half the cone's fundamental frequency as you go from a cylinder to a cone. So if the cone has a fundamental of 100Hz, the other harmonics will be 200, 300, 400 etc, but in the cylinder they'll all be 50 Hz lower, so 50Hz, 150Hz, 250Hz, 350Hz etc, i.e. the odd harmonics. The don't all shift at the same rate as you go from cylinder to cone. The higher the frequency, the more pointy the end of the cone has to be for them to be affected. The spectrogram was made using the sound you're hearing, though it may be out in time by a bit from when I lined it up in the video. And glad you liked the trumpet valve animation. My first attempt at using Blender (after quite a few tutorials and many a botched result).

[@tristanludowyk9579]

first viewer! i feel special :P

[@joshbennettmusic]

🎉