{"id":22894208,"url":"https://github.com/sentient-codebot/speech-noise-reduction","last_synced_at":"2025-10-30T07:38:51.581Z","repository":{"id":156736992,"uuid":"361702698","full_name":"sentient-codebot/speech-noise-reduction","owner":"sentient-codebot","description":"Design and build a single-channel (or multi-channel) speech enhancement (noise reduction) system for far-end noise reduction.","archived":false,"fork":false,"pushed_at":"2021-06-16T19:18:48.000Z","size":30347,"stargazers_count":4,"open_issues_count":0,"forks_count":0,"subscribers_count":1,"default_branch":"main","last_synced_at":"2025-10-08T08:57:58.086Z","etag":null,"topics":[],"latest_commit_sha":null,"homepage":null,"language":"MATLAB","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/sentient-codebot.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":"2021-04-26T10:05:56.000Z","updated_at":"2025-09-25T16:27:14.000Z","dependencies_parsed_at":null,"dependency_job_id":"f30df55e-c4eb-4c38-88f0-2b3fb251a487","html_url":"https://github.com/sentient-codebot/speech-noise-reduction","commit_stats":null,"previous_names":[],"tags_count":0,"template":false,"template_full_name":null,"purl":"pkg:github/sentient-codebot/speech-noise-reduction","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/sentient-codebot%2Fspeech-noise-reduction","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/sentient-codebot%2Fspeech-noise-reduction/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/sentient-codebot%2Fspeech-noise-reduction/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/sentient-codebot%2Fspeech-noise-reduction/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/sentient-codebot","download_url":"https://codeload.github.com/sentient-codebot/speech-noise-reduction/tar.gz/refs/heads/main","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/sentient-codebot%2Fspeech-noise-reduction/sbom","scorecard":null,"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":278916429,"owners_count":26068091,"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":"2025-10-08T02:00:06.501Z","response_time":56,"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":"2024-12-13T23:17:10.913Z","updated_at":"2025-10-08T08:57:58.296Z","avatar_url":"https://github.com/sentient-codebot.png","language":"MATLAB","funding_links":[],"categories":[],"sub_categories":[],"readme":"# speech-noise-reduction\n\nmini-project of EE4182 Digital Audio and Speech Processing\n\n### Project details:\n\n* Design and build a single-channel speech enhancement (noise reduction) system for far-end noise reduction.\n\n* Use matlab\n\n* The speech enhancement system should consist of a gain function, noise PSD estimator and speech PSD estimator.\n\n* Perform an evaluation of the speech enhancement system.\n\n### Optional:\n\n* Implement a multi-microphone system\n\n## File description \n\n### runnable functions\n\n* main.m the main function which implements the whole noise reduction pipeline\n\n* histogram_freq_domain.m shows the histogram of the clean speech DFT coefficient magnitudes, and also tries to fit a distribution, although not really contribute for later work. \n* s_mag_prior_distribution.m trying to use MLE to get the distribution of the clean speech signal[currently not used]\n* plot_ggd.m shows what the generalized gamma distribution density function looks like\n\n* bartlett_estimate.m as the name suggests\n\n### key utitily functions\n* noise_track.m MMSE based noise PSD tracking algorithm with SPP\n\n* mmse_gain.m an attempt to calculate MMSE gain (under rayleigh distribution). [currently not working]\n\n* noisepowpropsed.m Richard's script. the EXACTLY same function is implemented in noise_track.m [currently not used]\n\n### trivial utility functions\n\n* frame.m function to frame the original sound signal\n\n* attach_frame.m function to overlap framed signals\n\n* importfile.m  call MATLAB built-in functions to import any type of file. \nrequired by create_dataset.m. Need not running. \n\n* create_dataset.m import clean speech and add noise. Store resulted noisy speech to .mat. Need only running once. \n\n* lookup_gain_in_table.m Richard's script. Used to look up gain function values from a given table\n\n* \n* \n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fsentient-codebot%2Fspeech-noise-reduction","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fsentient-codebot%2Fspeech-noise-reduction","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fsentient-codebot%2Fspeech-noise-reduction/lists"}