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Show HN: Eigendrum - Draw any shape and hear what it sounds like as a drum

baselashraf81.github.io

21–30 of 111 posts

Re: Show HN: Eigendrum - Draw any shape and hear what it sounds like as a drum

#23
post #3

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

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.

Re: Show HN: Eigendrum - Draw any shape and hear what it sounds like as a drum

#25
post #8

https://en.wikipedia.org/wiki/Hearing_the_shape_of_a_drum

https://www.jstor.org/stable/2313748

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!

Re: Show HN: Eigendrum - Draw any shape and hear what it sounds like as a drum

#26
post #3

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

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…

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

Re: Show HN: Eigendrum - Draw any shape and hear what it sounds like as a drum

#28
post #17

“Everything’s a Drum!” https://eigendrum.com/#s=__Ap66fz1em9-NXp7_6a6-0AJu1AAiTv6gK...

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.

Re: Show HN: Eigendrum - Draw any shape and hear what it sounds like as a drum

#29
post #17

“Everything’s a Drum!” https://eigendrum.com/#s=__Ap66fz1em9-NXp7_6a6-0AJu1AAiTv6gK...

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.

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.”

Re: Show HN: Eigendrum - Draw any shape and hear what it sounds like as a drum

#30
post #26

Earlier quoted context omitted.

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…

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

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