{"id":18409314,"url":"https://github.com/sdtelectronics/libusagi","last_synced_at":"2025-08-03T20:33:32.998Z","repository":{"id":105561273,"uuid":"156065322","full_name":"SdtElectronics/libusagi","owner":"SdtElectronics","description":"libusagi - Universal Sigma-delta Analog Interface","archived":false,"fork":false,"pushed_at":"2021-12-19T15:13:39.000Z","size":152,"stargazers_count":0,"open_issues_count":0,"forks_count":0,"subscribers_count":0,"default_branch":"master","last_synced_at":"2025-04-12T22:09:14.022Z","etag":null,"topics":[],"latest_commit_sha":null,"homepage":"","language":"C++","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"bsd-3-clause","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/SdtElectronics.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":"LICENSE","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":"2018-11-04T09:04:59.000Z","updated_at":"2023-05-02T09:26:41.000Z","dependencies_parsed_at":"2024-03-25T09:15:11.680Z","dependency_job_id":null,"html_url":"https://github.com/SdtElectronics/libusagi","commit_stats":null,"previous_names":[],"tags_count":0,"template":false,"template_full_name":null,"purl":"pkg:github/SdtElectronics/libusagi","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/SdtElectronics%2Flibusagi","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/SdtElectronics%2Flibusagi/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/SdtElectronics%2Flibusagi/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/SdtElectronics%2Flibusagi/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/SdtElectronics","download_url":"https://codeload.github.com/SdtElectronics/libusagi/tar.gz/refs/heads/master","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/SdtElectronics%2Flibusagi/sbom","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":268607782,"owners_count":24277623,"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","status":"online","status_checked_at":"2025-08-03T02:00:12.545Z","response_time":2577,"last_error":null,"robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":true,"can_crawl_api":true,"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":[],"created_at":"2024-11-06T03:24:36.641Z","updated_at":"2025-08-03T20:33:32.967Z","avatar_url":"https://github.com/SdtElectronics.png","language":"C++","funding_links":[],"categories":[],"sub_categories":[],"readme":"# libusagi\nlibusagi - **U**niversal **S**igma-delta **A**nalo**g** **I**nterface is a header-only library for converting discrete multilevel signal to binary bitstream via Σ-Δ modulation. \n\n## Highlights\n* Full implementation of a Σ-Δ modulator from oversampling, interpolation to modulation with simple interface\n* Configurable oversampling rate (OSR), modulation order, interpolation filter and data type.\n* No external dependency for core implementation (some interpolation filter requires [liquid DSP](https://github.com/jgaeddert/liquid-dsp/))\n\n## Structure\n### Oversampler\nSource directory: src/filter\n\nOversamplers take a n-bit sample and produce `M` n-bit value at one time, where `M` is the oversampling rate (OSR). Oversamplers provide smooth upconverted signal to the modulator. Predefined oversamplers are:\n\n* #### [Sample \u0026 Hold](src/filter/hold.h)\nDirectory: src/filter/hold.h\n\n### Modulator\nDirectory: src/core\n\nModulators take a n-bit sample and produce a 1bit value at one time. Modulators employ low pass filters (LPFs) to perform noise-shaping, shifting the quantizing noise to higher frequency. Predefined modulators are:\n\n* #### [CIFB](src/core/CIFB.h)\nSource: src/core/CIFB.h\n\nModulator with CIFB (Cascade of Integrators with Distributed Feedback) filter\n![modulator](doc/fig2.png)\n\n* #### [NIF](src/core/NIF.h)\nSource: src/core/NIF.h\n\nModulator with configurable filter, no input feedforward. \n\n### Convertor\nSource directory: src/sdda.h\n\n## Tests\n### Test with CERN Root\n\n\n## License\nThis project is under the [BSD-3-Clause License](LICENSE).","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fsdtelectronics%2Flibusagi","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fsdtelectronics%2Flibusagi","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fsdtelectronics%2Flibusagi/lists"}