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Life & fun · alternatives · 2026

24 alternatives to Eigendrum - Draw any shape and hear what it sounds like as a drum

Hi HN, I built Eigendrum, a web tool that solves the 2D wave equation for arbitrary shapes so you can hear what they sound like as drums. How it works: * Solves -∇²u = λu using finite element analysis (Kφ = λMφ) on a triangle mesh. * Validated to <0.1% error against closed-form solutions for circles (Bessel zeros) and rectangles. * Sound model factors in strike location, Rayleigh damping, and mallet width. * Includes Kac drums I & II to demonstrate identical sound spectra from different geometries. * No frameworks, build steps, or dependencies. Repo and tests:…

Eigendrum is a web tool that lets users draw custom shapes and hear them as drums by solving the 2D wave equation through finite element analysis. The tool calculates actual vibration modes based on the drawn shape's… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Prices are shown for the 2 we have checked on their own sites, 2 of them free or with a free tier.

  1. 1

    Draw any shape and hear what it would sound like as a drum

    Aug 2026 · eigendrum.com · its alternatives →

  2. 2IB

    Originally started as a project to restore patterns from now defunct website 808.pixll.de just for myself, but eventually i decided to share it with others. I've seen this website mentioned a couple of times on HN:) Currently it only supports Roland TR-808, but there will be more.

    2025 · drumpatterns.onether.com · its alternatives →

  3. 3
    I built a synthesizer based on 3D physicsfree tier, from $99/mo▲512

    I've been working on the Anukari 3D Physics Synthesizer for a little over two years now. It's one of the earliest virtual instruments to rely on the GPU for audio processing, which has been incredibly challenging and fun. In the end, predictably, the GUI for manipulating the 3D system actually ended up being a lot more work than the physics simulation. So far I am only selling it direct on my website, which seems to be working well. I hope to turn it into a sustainable business, and ideally I'd have enough revenue to hire folks to help with it. So far it's been 99% a solo project, with…

    2025 · anukari.com · its alternatives →

  4. 4

    Online drum machine and sequencer with Roland 808 style samples

    2023 · peel.fm · its alternatives →

  5. 5

    An intuitive 64-step drum sequencer progressive web app built using React, Redux, and Tone.js

    2021 · sequencer64.com · its alternatives →

  6. 6AW

    NoiseCraft is an open source, visual programming language and platform for sound synthesis and music making, with the goal of creating a community for the open exchange of musical ideas. The design is loosely inspired by PureData, Max/MSP as well as other visual programming languages. NoiseCraft is

    2022 · noisecraft.app · its alternatives →

  7. 7

    Draw.Audio is a free online music maker. Draw notes on a grid and hear them play back instantly — a browser-based synthesizer, sequencer, and visual instrument.

    2024 · draw.audio · its alternatives →

  8. 8

    Interactive tool to understand & visualize the harmonic series in music, also known as the overtone series. Select a fundamental & hear the first 11 overtones.

    2022 · muted.io · its alternatives →

  9. 9IV
  10. 10

    Learn music better with our living sheet music.

    2012 · soundslice.com · its alternatives →

  11. 11

    Powerful, fun easy-to-use music production app for iOS

    2018 · apps.apple.com · its alternatives →

  12. 12

    Hello all! I've been an avid fan of Pocket Operators by Teenage Engineering since I found out about them. I even own an EP-133 K.O. II today, which I love. A couple of months ago, Reddit user andiam03 shared a Google Sheet with some drum patterns [1]. I thought it was a very cool way to share and understand beats. During the weekend I coded a basic version of this app I am sharing today. I iterated over it in my free time, and yesterday I felt like I had a pretty good version to share with y'all. It's not meant to be a sequencer but rather a way to experiment with beats and basic sounds,…

    Jan 2026 · beats.lasagna.pizza · its alternatives →

  13. 13

    This is an web audio experiment I've been wanting to do for a long time. Basically an ambient music composition, but all the sound elements are laid out in space, and that musical space can be explored freely. It's definitely inspired by in-world music that sometimes appears in games. I basically took that concept, keeping the music aspect, and dropping the entire "game" aspect. I also turned it into a more "traditional" non-interactive album, but since I started with code, why not program the whole thing? Had a blast making the entire album from code, the complete source for the album is…

    2024 · ambient.garden · its alternatives →

  14. 14

    The app to learn how to play drums

    2024 · apps.apple.com · its alternatives →

  15. 15T1
  16. 16

    I’ve recently released my solo project Audiocube I wanted to make a 3D DAW, where spatial audio, physics, and virtual acoustics are all directly integrated into the engine. This makes it easy to create music in 3D, and experiment with new techniques which aren’t possible in traditional DAWs and plugins. I’d love to get any feedback on this software (Mac&#x2F;Windows) to make it better. You can download it for free through the website. Thanks, Noah

    2025 · audiocube.app · its alternatives →

  17. 17

    Dear, This is an update from first submission [1]. New features: - add Hz scale - add YT Music support - add microphone recording - add scale (x and y) options to reduce CPU usage [1] https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=28135562

    2021 · github.com · its alternatives →

  18. 18

    This online virtual oscilloscope allows you to visualise live sound input and get to grips with how to adjust the display. If you find this useful, our online spectrum analyser may also be of interest to you.

    2016 · academo.org · its alternatives →

  19. 19TS

    Hi there, my name is Jay. Making music and writing software have probably been the two biggest pleasures of my life -only after my family. My team and I recently started a long journey of trying to completely change the way people create music, and as it usually happens with any long journey, it all starts with small steps. One of those small steps was to build https:&#x2F;&#x2F;drummy.io, or "Dummy Drums," a very simple yet useful drum machine that stores the entire drum pattern in the hashtag of the URL. There is no backend. Fully served by a CDN. If you wanna learn how to build your own…

    2022 · its alternatives →

  20. 20RA

    Hey HN. I built this quick and dirty component to render audio waveforms using WebGPU. I just published it to NPM. It's the first time I use WebGPU and it's been a while since I write shaders. Feedback is very welcome! GitHub: https:&#x2F;&#x2F;github.com&#x2F;mrkev&#x2F;webgpu-waveform Examples: https:&#x2F;&#x2F;aykev.dev&#x2F;webgpu-waveform

    2024 · its alternatives →

  21. 21

    After two years of development, I'm super excited to release Beat Maker! This is my take on what I hope is the best free, web-based drum machine. My goal was to build something that was not only fun and easy to use for beginners but also powerful enough for serious producers. I did extensive research on existing drum machines, analyzed their UX, and tried to build something that adds something new. It's a nearly 100% client-side app, written in ClojureScript, and is a PWA so you can install it to your home screen for an app-like experience. Besides the standard grid editor, Beat Maker has…

    2025 · dopeloop.ai · its alternatives →

  22. 22

    This started out when I vibe-coded a guitar scale fingering generator. It came out pretty good, and I started adding stuff to it: chords, then how chords and scales interact. Then I added charts for other instruments I mess around with: piano, cello, alto recorder. There's a complexity toggle to go from basic harmony to extended&#x2F;experimental stuff. It's honestly still mostly a toy, but I thought other people might be interested in playing with it. Source is on github, so it's easy enough to run locally and fork. https:&#x2F;&#x2F;github.com&#x2F;aleshh&#x2F;gtr-scales

    May 2026 · projects.alesh.com · its alternatives →

  23. 23

    Harness AI to generate infinite unique drum samples

    2022 · audialab.com · its alternatives →

  24. 24RR

    Last April I shared about my Resonate project here (https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=43694157) A lot has happened since: the work I presented in much more detail at last June's International Computer Music Conference (ICMC) got best paper award. I also gave a talk at the Audio Developer Conference in Bristol last November, the video is on YouTube). This year's work, which I recently presented at this year's ICMC, starts with known techniques from the phase vocoder literature to build self-tuning filter banks that extract very efficiently the frequency components that are…

    2025 · alexandrefrancois.org · its alternatives →

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