{"id":15647619,"url":"https://github.com/fritzo/rationalkeyboard","last_synced_at":"2025-07-19T07:10:11.271Z","repository":{"id":2185993,"uuid":"3133618","full_name":"fritzo/rationalkeyboard","owner":"fritzo","description":"A browser app to demonstrate harmony in just intonation.","archived":false,"fork":false,"pushed_at":"2015-12-09T01:28:09.000Z","size":246,"stargazers_count":45,"open_issues_count":3,"forks_count":11,"subscribers_count":3,"default_branch":"master","last_synced_at":"2025-04-30T13:19:59.706Z","etag":null,"topics":["audio","harmony","html5-audio","javascript"],"latest_commit_sha":null,"homepage":"http://fritzo.org/keys","language":"JavaScript","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":null,"status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/fritzo.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":null,"code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null}},"created_at":"2012-01-09T02:38:19.000Z","updated_at":"2025-01-05T09:34:59.000Z","dependencies_parsed_at":"2022-09-16T05:22:27.432Z","dependency_job_id":null,"html_url":"https://github.com/fritzo/rationalkeyboard","commit_stats":null,"previous_names":[],"tags_count":0,"template":false,"template_full_name":null,"purl":"pkg:github/fritzo/rationalkeyboard","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/fritzo%2Frationalkeyboard","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/fritzo%2Frationalkeyboard/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/fritzo%2Frationalkeyboard/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/fritzo%2Frationalkeyboard/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/fritzo","download_url":"https://codeload.github.com/fritzo/rationalkeyboard/tar.gz/refs/heads/master","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/fritzo%2Frationalkeyboard/sbom","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":265899948,"owners_count":23845883,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["audio","harmony","html5-audio","javascript"],"created_at":"2024-10-03T12:20:20.076Z","updated_at":"2025-07-19T07:10:11.233Z","avatar_url":"https://github.com/fritzo.png","language":"JavaScript","funding_links":[],"categories":["JavaScript"],"sub_categories":[],"readme":"# The Rational Keyboard\n\nA browser app to demonstrate harmony in just intonation.\nhttp://fritzo.org/keys\n\nThe Rational Keyboard is a browser app to play with harmony on the rational number line.\nImagine a piano with infinitely many keys,\n[one for each rational number](http://en.wikipedia.org/wiki/Just_intonation),\nand the keys move around and resize based on\n[what sounds good](http://en.wikipedia.org/wiki/Consonance_and_dissonance),\nusing some\n[really cool math](https://www.google.com/search?q=arnold+tongues).\n\nAudio is synthesized in background\n[Web Workers](https://developer.mozilla.org/en-US/docs/Web/Guide/Performance/Using_web_workers)\nand played with\n[HTML5 Audio objects](https://developer.mozilla.org/En/HTML/Element/Audio),\nand the interactive visualizations use a\n[2D HTML5 Canvas](https://developer.mozilla.org/en/HTML/Canvas).\nCheck out the source at [github](http://github.com/fritzo/rationalkeyboard),\nor just grab the [audio encoder](http://github.com/fritzo/wavencoderjs) for your own apps.\n\nAudio seems to work best in recent Firefox and Chrome releases,\nbut HTML5 audio is still a young technology.\nSometimes pausing helps to unglitch audio.\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Ffritzo%2Frationalkeyboard","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Ffritzo%2Frationalkeyboard","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Ffritzo%2Frationalkeyboard/lists"}