eigendrum (eigendrum.com)

146 points by bookofjoe 11 hours ago

36 comments:

by totetsu 5 hours ago
by vanderZwan 2 hours ago

So in Dutch one expression for "that makes no sense" is "dat slaat nergens op", which literally translates to "that doesn't hit (slap, beat) anything".

A ruder variation of that is "dat slaat als een … op een drumstel", or "that hits like a … on a drum set".

For some reason I felt like sharing this trivia.

by spockz an hour ago

I never heard “op een drumstel”, always “op een varken”. So it would be “Dat slaat als een tang op een varken.” Or “That hits like pliers on a pig.”

by isoprophlex 25 minutes ago

"Als een tang op een varken" is the common one for me as well. Runner up: "Als een lul op een stadsbus" (it makes as much sense as a dick against a city bus)

by vanderZwan 21 minutes ago

Perhaps the "hits like an x on a y" family is larger than any of us thought?

by vanderZwan 24 minutes ago

Could be a regional thing. I've heard the pliers-on-a-pig version too, might be more common.

by shit_game an hour ago

Aunty Donna were so wise.

by BaselAshraf81 7 hours ago

Thanks for reposting this! I'm the developer (BaselAshraf81) - happy to answer questions or hear suggestions here.

If you find it interesting, a star on the GitHub repo helps a lot.

And don't forget to follow me on github, I build cool stuff!

by aureate 16 minutes ago

The title alone sounds like this would be interesting, but I'll never know if it is because it has a trackers popup listing thousands of "partners" and a load of "legitimate interest" boxes ticked by default. This is Daily Mail level stuff, immediate back button for me.

by jmole 6 hours ago

This reminds me of a tongue drum I have. Have you thought about building an iterative solver for specific scales?

It would be interesting if you could simulate and then print (or laser cut) your own instrument on demand.

by discordance 6 hours ago

Those ads are nasty and really take away from the cool stuff you build!

by slhck 4 minutes ago

You mean the cool stuff Claude built?

by stdatomic 6 hours ago

I just entertained myself with this for 30 minutes.

by brcmthrowaway 4 hours ago

Can you do this for a didgeridoo?

by moralestapia 7 hours ago

This is very cool stuff, indeed!

by Waterluvian 7 hours ago

I tapped twice and got nothing but sketchy popup ads suggesting I need to install a VPN. Does it work on safari mobile for anyone else?

by latexr 27 minutes ago

> Does it work on safari mobile for anyone else?

It does for me. But I do use an ad blocker (Wipr 2).

by totetsu 6 hours ago

I didn’t get any sound on an iPhone either

by wickedsight an hour ago

You need to disable mute.

by stavros 28 minutes ago

This website has a list of data vendors 200 pages long, and it forces you to uncheck each one if you don't consent. I decided to close the tab rather than deal with this illegal dark pattern.

by ttul 4 hours ago

Try `1 + 0.16cos(4t) + 0.08cos(12t + pi/6) + 0.04cos(36t + pi/3) + 0.02cos(108t + pi/2)`

by andai 8 hours ago

Very cool. Number keys and QWERTYU (or clicking the rows on the right) trigger the "modes" in isolation, which are surprisingly microtonal.

Also you can draw your own drums! What! That's so cool

by plaguuuuuu 4 hours ago

there's an amazing video on youtube about how metal bar/gong instruments (like gamelans) have different overtones, and regular western intervals instead of being consonant (like with vibrating strings) are dissonant - even perfect 5ths - and a totally different set of intervals are consonant (slendro and pelog tunings are a bit different for this reason).

thinking about it, each drum here would have totally different ideal scales to the others.

this is cool.

by g6taa 3 hours ago

Do you have a hint on how to find that video?

by telotortium an hour ago

It’s “The Physics of Dissonance”: https://youtube.com/watch?v=tCsl6ZcY9ag

by _flux 2 hours ago

This would be quite nice as a VST/CLAP for music production!

by b0ringdeveloper 4 hours ago

I'm not sure if I'm learning a lot. All of the shapes and click locations basically sound the same to me.

by bowsamic 3 hours ago

Very cool, reminds me of some of Aphex Twin’s percussive elements

by esafak 7 hours ago
by BaselAshraf81 7 hours ago
by gspr 3 hours ago

I've read hundreds of papers in my mathematics career, and they – good and bad – almost always blend into eachother and turn into a diffuse fog in my memory, where they're identified by "that good one by Johnson-something-I-think.. no the 90s one I think".

There are very few exceptions. Kac's drum paper is one. It's so nicely written!

by nxc18 6 hours ago

Thanks, ChatGPT.

by Jeff_Brown 8 hours ago

I love it. I wish I could select materials.

by tanderson92 7 hours ago

Selecting different materials would not change much. Call the frequencies \lambda_1, \lambda_2, \lambda_3...

You can prove that changing the material has no effect on the relative frequencies: \lambda_2 / \lambda_1, \lambda_3 / \lambda_1, etc. are completely independent of the material.

The shape is the determining factor; changing the materials (and hence the wave speed) just dilates the whole spectrum.

by BaselAshraf81 7 hours ago

There's actually a "ring-out" slider and a "mallet" width slider under the drum already.

Ring out controls how fast the higher modes decay (basically stiff vs soft material), The mallet width controls how many modes a strike can even reach, since a real mallet can't drive the high frequency ones very hard.

No labeled presets like "wood" or "metal" though, just raw sliders. Would be a fun addition if someone wants to map a few physically sensible combos to buttons. PRs Welcome!

by uwagar 4 hours ago

amazing stuff, congrats!

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