{"id":20893382,"url":"https://github.com/Lightning-Chart/lcjs-showcase-audio","last_synced_at":"2025-05-12T22:33:06.373Z","repository":{"id":39172265,"uuid":"253410243","full_name":"Arction/lcjs-showcase-audio","owner":"Arction","description":"Audio visualization using LightningChart","archived":false,"fork":false,"pushed_at":"2024-08-21T11:52:59.000Z","size":34120,"stargazers_count":7,"open_issues_count":7,"forks_count":2,"subscribers_count":4,"default_branch":"master","last_synced_at":"2024-08-22T12:26:40.914Z","etag":null,"topics":["audio","audio-visualizer","data-visualization","javascript","lcjs","lightningchart-js","showcase","typescript"],"latest_commit_sha":null,"homepage":"https://arction.github.io/lcjs-showcase-audio/","language":"TypeScript","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/Arction.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,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null}},"created_at":"2020-04-06T06:09:50.000Z","updated_at":"2024-08-21T11:52:53.000Z","dependencies_parsed_at":"2024-08-21T12:21:24.912Z","dependency_job_id":null,"html_url":"https://github.com/Arction/lcjs-showcase-audio","commit_stats":null,"previous_names":[],"tags_count":0,"template":false,"template_full_name":null,"repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/Arction%2Flcjs-showcase-audio","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/Arction%2Flcjs-showcase-audio/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/Arction%2Flcjs-showcase-audio/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/Arction%2Flcjs-showcase-audio/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/Arction","download_url":"https://codeload.github.com/Arction/lcjs-showcase-audio/tar.gz/refs/heads/master","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":225156947,"owners_count":17429701,"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","audio-visualizer","data-visualization","javascript","lcjs","lightningchart-js","showcase","typescript"],"created_at":"2024-11-18T10:15:39.069Z","updated_at":"2025-05-12T22:32:56.349Z","avatar_url":"https://github.com/Arction.png","language":"TypeScript","funding_links":[],"categories":[],"sub_categories":[],"readme":"# LightningChart JS Audio visualization showcase\n\nAudio visualization application created using LightningChart JS.\n\nMore information about LightningChart\u003csup\u003e\u0026#174;\u003c/sup\u003e JS can be found from our website, https://www.arction.com/lightningchart-js/.\n\n## Description\n\nThe audio data is extracted in realtime using [Web Audio API's](https://developer.mozilla.org/en-US/docs/Web/API/BaseAudioContext). \n\nThe Web Audio API has an `.createAnalyser()` method that can be used to create a new [AnalyzerNode](https://developer.mozilla.org/en-US/docs/Web/API/AnalyserNode).\nThe AnalyzerNode has methods to get time-domain data (waveform) and frequency data which is data from Fast Fourier transform on the audio signal.\n\nThe time-domain data is shown as is on the `Time Domain` chart. That same data is also pushed to the `Waveform history` chart. This chart displays the last 1 million samples of the audio input.\n\nThe last chart, `Spectrum`, is used to display three different series.\n\n1. Spectrum of the latest samples.\n2. Maximum frequencies seen.\n3. Decaying frequency history.\n\n## Audio files licenses\n\n| File | License | Source |\n|------|---------|--------|\n| Truck_driving_by-Jason_Baker-2112866529.wav | Public Domain | http://soundbible.com/2097-Transfer-Truck-Drive-By.html |\n| 500_1000_10000.wav | - | https://github.com/Snekw |\n\n## Getting Started\n\nThe application is hosted at:\n\nhttps://arction.github.io/lcjs-showcase-audio/\n\nTo run the application locally with hot reload:\n\n1. Install Node.JS\n2. Run `npm install`\n3. Run `npm start`\n4. Open browser and navigate to http://localhost:8080\n\n## Support\n\nIf you notice an error in the example code, please open an issue on [GitHub][0].\n\nOfficial [API documentation][1] can be found on [Arction][2] website.\n\nIf the docs and other materials do not solve your problem as well as implementation help is needed, ask on [StackOverflow][3] (tagged lightningchart).\n\nIf you think you found a bug in the LightningChart JavaScript library, please contact support@arction.com.\n\nDirect developer email support can be purchased through a [Support Plan][4] or by contacting sales@arction.com.\n\n© Arction Ltd 2009-2019. All rights reserved.\n\n[0]: https://github.com/Arction/lcjs-showcase-trading/issues\n[1]: https://www.arction.com/lightningchart-js-api-documentation\n[2]: https://www.arction.com\n[3]: https://stackoverflow.com/questions/tagged/lightningchart\n[4]: https://www.arction.com/support-services/\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2FLightning-Chart%2Flcjs-showcase-audio","html_url":"https://awesome.ecosyste.ms/projects/github.com%2FLightning-Chart%2Flcjs-showcase-audio","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2FLightning-Chart%2Flcjs-showcase-audio/lists"}