{"id":20131260,"url":"https://github.com/glassnotes/elec-221","last_synced_at":"2026-03-04T20:32:12.992Z","repository":{"id":58881714,"uuid":"533471633","full_name":"glassnotes/ELEC-221","owner":"glassnotes","description":"Lecture materials for the ELEC 221 Signals and Systems course at UBC. ","archived":false,"fork":false,"pushed_at":"2024-12-08T23:02:26.000Z","size":121748,"stargazers_count":23,"open_issues_count":0,"forks_count":15,"subscribers_count":4,"default_branch":"main","last_synced_at":"2025-08-01T01:57:42.537Z","etag":null,"topics":["educational-materials","signal-processing"],"latest_commit_sha":null,"homepage":"","language":null,"has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"mit","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/glassnotes.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":"2022-09-06T19:21:50.000Z","updated_at":"2025-07-07T17:08:28.000Z","dependencies_parsed_at":"2025-01-13T08:54:50.305Z","dependency_job_id":null,"html_url":"https://github.com/glassnotes/ELEC-221","commit_stats":null,"previous_names":[],"tags_count":1,"template":false,"template_full_name":null,"purl":"pkg:github/glassnotes/ELEC-221","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/glassnotes%2FELEC-221","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/glassnotes%2FELEC-221/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/glassnotes%2FELEC-221/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/glassnotes%2FELEC-221/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/glassnotes","download_url":"https://codeload.github.com/glassnotes/ELEC-221/tar.gz/refs/heads/main","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/glassnotes%2FELEC-221/sbom","scorecard":null,"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":286080680,"owners_count":30091773,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2026-03-04T19:41:02.502Z","status":"ssl_error","status_checked_at":"2026-03-04T19:40:05.550Z","response_time":59,"last_error":"SSL_read: unexpected eof while reading","robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":false,"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":["educational-materials","signal-processing"],"created_at":"2024-11-13T20:47:09.014Z","updated_at":"2026-03-04T20:32:12.151Z","avatar_url":"https://github.com/glassnotes.png","language":null,"funding_links":[],"categories":[],"sub_categories":[],"readme":"# ELEC 221\nLecture materials for the ELEC 221 Signals and Systems course at UBC. \n\nMaterials for the 2022 version of the course can be found under \"Releases\".\n\n## Lecture contents\n\n1. [2024-09-05] Overview and intro to signals and systems\n1. [2024-09-10] LTI systems, DT impulse response and the convolution sum\n1. [2024-09-12] DT impulse response and convolution sum; CT convolution integral\n1. [2024-09-17] CT convolution integral; the impulse response and system properties\n1. [2024-09-19] CT Fourier series\n1. [2024-09-24] CT Fourier series coefficients and properties\n1. [2024-09-26] CT and DT Fourier series\n1. [2024-10-01] DT Fourier series\n1. [2024-10-03] DT Fourier series coefficients; filters\n1. [2024-10-10] Introducing the Fourier transform\n1. [2024-10-15] Properties of the CT Fourier Transform\n1. [2024-10-17] The CT Fourier transform properties: convolution and multiplication\n1. [2024-10-22] Differentiation and integration properties; systems based on\n   differential equations\n1. [2024-10-24] Analysis of CT systems based on first- and second-order differential equations\n1. [2024-10-29] The discrete-time Fourier transform\n1. [2024-10-31] DT systems based on difference equations\n1. [2024-11-07] The sampling theorem\n1. [2024-11-14] CT/DT conversion and sampling DT signals\n1. [2024-11-19] Amplitude modulation\n1. [2024-11-21] Modulation and communication systems\n1. [2024-11-26] The Laplace transform\n1. [2024-11-28] The Laplace transform: properties and system analysis\n1. [2024-12-03] The Laplace transform and feedback systems; introducing the $z$-transform\n1. [2024-12-05] Feedback systems\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fglassnotes%2Felec-221","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fglassnotes%2Felec-221","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fglassnotes%2Felec-221/lists"}