News for hackers. Stuff that matters.
Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by stavros on Saturday August 15, 2026 @04:32AM (#49308840)
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.
Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by aureate on Saturday August 15, 2026 @04:44AM (#49308887)
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.
Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by BaselAshraf81 on Saturday August 15, 2026 @10:07AM (#49310711)
I am sorry about that, I thought I removed the consent banner along with the ads completely this morning, then I came back here and realized Google AdSense still had the consent banner published, I forgot to disable it, it doesn't show up to me as I am not EU I guess. Should be gone now, please let me know if something else still shows up.
Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by aureate on Saturday August 15, 2026 @01:30PM (#49312469)
Much appreciated, and it is indeed very interesting!
Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by letier on Saturday August 15, 2026 @05:15AM (#49309030)
Not a fan of the cookie dialog. Had to close the page as there was no easy way to reject the ad cookies.
Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by andrelaszlo on Saturday August 15, 2026 @08:10AM (#49309941)
Yeah, I'm no GDPR expert but it seems completely unreasonable that the "legitimate interest" numbers add upp to 2825. Even though there's probably some overlap, the biggest category is "Measure advertising performance (695 partners included)". How does this dialogue help me control who gets my data or how it will be used?
Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by slhck on Saturday August 15, 2026 @08:17AM (#49309986)
It's not even unreasonable, it's illegal under GDPR. You have to provide a reject all option (for rejecting all non-necessary cookies).
Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by efilife on Saturday August 15, 2026 @08:18AM (#49309990)
Same. I no longer tolerate this bullshit
Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by Ycros on Saturday August 15, 2026 @05:29AM (#49309094)
what has the world come to when people beg for stars on github
Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by fragmede on Saturday August 15, 2026 @06:59AM (#49309546)
Merely asking is begging?
Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by srean on Saturday August 15, 2026 @05:55AM (#49309233)
Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by karloproducer on Saturday August 15, 2026 @06:12AM (#49309327)
should be a vst intrument
Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by Y_Y on Saturday August 15, 2026 @06:12AM (#49309328)
The tone is kind of snippy. It refuses to play when there would be numerical artifacts ("there would be numbers, and they would be wrong") and if your drawn shape self-intesects it complaint rather than just giving a reasonable answer with a warning (minimum crossing width, separate bodies).

Overall a cool tool, but pretty annoying. I point it out not really to criticize this project, but because I see a trend in software that has a holier-than-thou sort of paternalistic tone. LLMs are obviously rife with this, but I also see interfaces from some humans that give me the vibe of a snooty Parisian waiter.

Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by chrisjj on Saturday August 15, 2026 @06:18AM (#49309358)
Great! I vote for a skin tension control.
Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by metalman on Saturday August 15, 2026 @06:28AM (#49309405)
very nice! but having the "this space for rent" , space is the thing that realy says that it's someone doing there thing, everything is cool, no worrys, here play with a drum, and you knid of know that whoever might go in that space will be truely random, and interesting to some further subset of those that jump at an internet drum thing. thanks!
Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by nmeofthestate on Saturday August 15, 2026 @06:29AM (#49309408)
Contemptible cookie dialog.
Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by throwaway27448 on Saturday August 15, 2026 @10:40AM (#49310982)
Sometimes you guys sound like big babies
Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by serial_dev on Saturday August 15, 2026 @06:51AM (#49309505)
What, didn’t you want hundreds of companies track you while you try to get the audio work on a drum simulator?
Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by BaselAshraf81 on Saturday August 15, 2026 @09:28AM (#49310376)
I am sorry about that, I thought I removed the consent banner along with the ads completely this morning, then I came back here and realized Google AdSense still had the consent banner published, I forgot to disable it, it doesn't show up to me as I am not EU I guess. Should be gone now, please let me know if something else still shows up.
Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by abcd_f on Saturday August 15, 2026 @06:50AM (#49309496)
Make it possible to reject all cookies in one click.

What you have now is ridiculous.

Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by rpastuszak on Saturday August 15, 2026 @07:14AM (#49309633)
This is brilliant! I wish I had seen this a few years back!

Q: Generating higher quality sounds with a specified duration (e.g. within a 300ms margin) -- is it possible with your approach, is it hard, how would you go about that?

I'm asking because a few years back I had an idea for a breathwork/meditation app that would allow you to connect / control the breath duration using a gong sound. Example pattern: 4s in, 4s wait, 8-10s out. Next: use a feedback loop with the real user breathing pattern, slowly extend towards the goal.

Ended up with scaling it down to a "dot to stare at" + basic gong, because I realised how ridiculously chromatically complex the sound is. (my approach was to synthesise an envelope with a shape determined by time -- pity the fool who thought it was easy or even made sense!)

https://untested.sonnet.io/notes/projects-and-apps-i-built-f...

I got +100k people visiting it and still a couple dozen daily users running a 5+ min session, so I'm happy with it. But, the itch is still there, so I'd love to revisit my old nemesis so to speak :)

Also, if you want to chat about this, hit me up sonnet.io/posts/hi !

Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by isoprophlex on Saturday August 15, 2026 @07:16AM (#49309639)
Fun concept. Absolutely carcinogenic approach to monetization.
Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by BaselAshraf81 on Saturday August 15, 2026 @06:58PM (#49315077)
I disabled the ads 1 hours after I seen this but I totally forgot about the consent banner, sorry for that. Hope it didn't affect your experience much.
Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by dkdbejwi383 on Saturday August 15, 2026 @07:28AM (#49309695)
Audio doesn’t seem to work in mobile safari.
Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by isubkhankulov on Saturday August 15, 2026 @10:04AM (#49310678)
It worked for me by unmuting my ringer and raising my volume. Agree UX isnt great.
Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by Myzura on Saturday August 15, 2026 @08:32AM (#49310065)
Can it remain stable at a certain MHz?
Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by squigz on Saturday August 15, 2026 @08:36AM (#49310080)
> If you find it interesting, a star on the GitHub repo helps a lot.

I am genuinely curious, how?

Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by abcd_f on Saturday August 15, 2026 @11:38AM (#49311495)
Probably looks good on the resume?
Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by BaselAshraf81 on Saturday August 15, 2026 @07:03PM (#49315115)
That's one thing, and I would also like to be known in the dev world, with my ideas, what I build, and be famous for something I love doing.

I don't really care as much about the resume but I have to, I just graduated college.

My open source journey is starting and I want my creativity to be heard and seen.

Hope I answered your question :)

Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by abcd_f on Monday August 17, 2026 @06:06AM (#49328626)
The question wasn't mine.
Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by BaselAshraf81 on Tuesday August 18, 2026 @12:09AM (#49341145)
Oh, I misclicked, my bad.
Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by bromuro on Saturday August 15, 2026 @08:51AM (#49310159)
I wanted to try it but it talks to share my data to the 1192 partners of yours. How do you have so many partners, and what they do?
Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by BaselAshraf81 on Saturday August 15, 2026 @09:28AM (#49310373)
I am sorry about that, I thought I removed the consent banner along with the ads completely this morning, then I came back here and realized Google AdSense still had the consent banner published, I forgot to disable it, it doesn't show up to me as I am not EU I guess. Should be gone now, please let me know if something else still shows up.
Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by jLaForest on Saturday August 15, 2026 @08:54AM (#49310168)
Why does the submitted link redirect? Is that allowed on HN
Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by BaselAshraf81 on Saturday August 15, 2026 @09:35AM (#49310438)
It was hosted on github pages before buying a domain, you can directly visit eigendrum.com, sorry for the confusion!
Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by OgsyedIE on Saturday August 15, 2026 @08:56AM (#49310176)
Separate to the concerns about privacy others have, I found some ear-splitting pitch errors with making very narrow asterisk-shaped drums with a number of spokes not divisible by 2 or 3. Good thing my volume was low.
Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by thetimewotitis on Saturday August 15, 2026 @09:08AM (#49310237)
I would love you to get all this in JUCE or w/ever and make a plugin.

have you seen https://differentinstruments.com/ ?

Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by willf on Saturday August 15, 2026 @10:30AM (#49310896)
This is so dang cool. I’m sorry that all people can do is complain!
Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by codedokode on Saturday August 15, 2026 @10:43AM (#49311010)
It seems to simulate only the membrane, and not the body of the drum, so no bass drum, no snare and no hi-hats?
Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by prabhanjana_c on Saturday August 15, 2026 @11:35AM (#49311468)
actually too cool. very addictive, while changing different parameters and playing.
Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by fl4regun on Saturday August 15, 2026 @01:41PM (#49312561)
This is very fun to play with and design different drums. I was able to make one that had 4 connected but distinct regions giving different pitches, then within each of those regions (which look like 4 lobes of different sizes) where you tap on that region will further change the sound! Then I realized I basically just made a hand pan.
Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by joeyoung111 on Saturday August 15, 2026 @04:36PM (#49314099)
this is pretty cool
Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by hn_submit on Saturday August 15, 2026 @04:49PM (#49314189)
Could something like this be used to design speakers?
Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by BaselAshraf81 on Saturday August 15, 2026 @06:57PM (#49315073)
I think the optimal would always be a circular speaker. But I like the way you think. It's like building a car with triangular glass wheels.
Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by dboreham on Saturday August 15, 2026 @09:40PM (#49316084)
Something like this is used to design speakers (and countless other things).
Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by peter_d_sherman on Saturday August 15, 2026 @04:55PM (#49314246)
What a great visualizer tool!

Observation: I never saw the link between Wave Equation Solvers, Finite Element Analysis (Eigenvalues, Eigenvectors, etc.) and Cymatics -- until I visited the above web page!

Related:

Cymatics: Chladni Plate - Sound, Vibration and Sand:

https://www.youtube.com/watch?v=tFAcYruShow

Cymatics:

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

Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by lucb1e on Saturday August 15, 2026 @08:33PM (#49315683)
Anyone else seeing "net::ERR_SSL_VERSION_OR_CIPHER_MISMATCH"? Happens both in Firefox mobile and another browser that's a thin wrapper around Google's Chromium Webview. I'm surprised nobody mentioned it yet if firefox and chromium both struggle with this site. Or do they use a common TLS engine on Android?

Sadly http is not supported, it forces https for what I understand (from the title) to be a little web toy

Edit: same issue on Firefox desktop on Linux. It gets the redirect from github.io and then a ciphersuite mismatch. I now guess the host got some faulty update and it's not a me issue

Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by BaselAshraf81 on Saturday August 15, 2026 @09:19PM (#49315949)
Hi, I was propagating DNS nameservers, sorry for the delay.

Let me know if you still face any issues.

EDIT: The DNSSEC validation error was caused by a cached TTL mismatch during the nameserver migration. I've temporarily disabled DNSSEC while it clears up and am getting it sorted out.

Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by _def on Saturday August 15, 2026 @08:40PM (#49315718)
same for me
Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by Hacker_Yogi on Saturday August 15, 2026 @09:19PM (#49315951)
Website is offline.
Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by eigenblake on Saturday August 15, 2026 @10:50PM (#49316472)
I approve.
Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by BaselAshraf81 on Saturday August 15, 2026 @10:52PM (#49316478)
I thank.
Re:Show HN: Eigendrum - Draw any shape and hear what it soun... by ahmetson on Sunday August 16, 2026 @11:36PM (#49326318)
It doesn’t work on the mobile phones yet. Could you look at it? I use iPhone 14