{"adoption": {"forks": 1070, "observed_at": "2026-08-28T04:10:23.625162+00:00", "stars": 8576}, "canonical_url": "https://ross.abutalabs.com/products/librosa", "card": {"archived": false, "artifact_type": "library", "description": "Python library for audio and music analysis", "domain": ["machine-learning", "data-science"], "enriched": true, "function": ["audio-processing", "machine-learning", "nlp"], "health_score": 99, "homepage": "https://librosa.org/", "language": "Python", "license": "ISC", "license_family": "permissive", "maturity": "stable", "member_repos": ["librosa/librosa"], "name": "librosa/librosa", "platform": ["python", "cross-platform"], "pushed_at": "2026-08-22T13:06:58+00:00", "repo": "librosa/librosa", "stars": 8576, "tags": ["music-information-retrieval", "dsp", "signal-processing", "spectrogram", "feature-extraction", "scipy-ecosystem", "audio"], "topics": ["audio", "python", "music", "dsp", "librosa", "scipy"], "urls": [], "use_cases": ["extract audio features like MFCCs and spectrograms", "analyze music for tempo, beat, and onset detection", "build a music genre classification model", "resample and load audio files in Python", "compute chroma features for chord recognition", "visualize audio waveforms and spectrograms"], "what_it_is": "Librosa is a Python library for audio and music signal processing, providing foundational algorithms for building music information retrieval (MIR) systems. It offers feature extraction, spectral analysis, and DSP tools built on the scientific Python ecosystem.", "when_to_avoid": ["you need real-time low-latency audio streaming or playback", "you need audio synthesis or DAW-style editing rather than analysis", "you need GPU-accelerated large-scale audio processing"], "when_to_choose": ["you need well-established, documented audio feature extraction in Python", "you are building music information retrieval or audio ML pipelines", "you want a scipy/numpy-compatible signal processing toolkit"]}, "data_as_of": "2026-08-30T08:39:29.467469+00:00", "members": [{"path": "/products/librosa", "repo": "librosa/librosa", "role": "main", "score": 87}], "provenance": {"archived": {"kind": "observed", "observed_at": "2026-08-28T04:10:23.625162+00:00", "source": "github"}, "artifact_type": {"confidence": null, "enriched_at": "2026-08-29T17:26:16.205357+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "b1b5c41f1aa4de033472662a5c755f9f0d717fe95751216081f193f33264ea67", "fetched_at": "2026-08-28T04:10:23.625162+00:00", "kind": "readme", "missing": false, "url": "https://github.com/librosa/librosa"}, {"content_hash": "6a672a97afcc9a4905abca7dbcf11fbf27b8b7b66ac1dfa8defcb79cb4a49c75", "fetched_at": "2026-08-29T08:26:31.875354+00:00", "kind": "homepage", "missing": false, "url": "https://librosa.org/"}, {"content_hash": "31e6fed74e08b17a593b5cd2cbeb0a78cabfc0b279a716fc55396cf9dc98d1d7", "fetched_at": "2026-08-29T08:26:31.879895+00:00", "kind": "registry_pypi", "missing": false, "url": "https://pypi.org/pypi/librosa/json"}], "taxonomy_version": 1}, "description": {"kind": "observed", "observed_at": "2026-08-28T04:10:23.625162+00:00", "source": "github"}, "domain": {"confidence": null, "enriched_at": "2026-08-29T17:26:16.205357+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "b1b5c41f1aa4de033472662a5c755f9f0d717fe95751216081f193f33264ea67", "fetched_at": "2026-08-28T04:10:23.625162+00:00", "kind": "readme", "missing": false, "url": "https://github.com/librosa/librosa"}, {"content_hash": "6a672a97afcc9a4905abca7dbcf11fbf27b8b7b66ac1dfa8defcb79cb4a49c75", "fetched_at": "2026-08-29T08:26:31.875354+00:00", "kind": "homepage", "missing": false, "url": "https://librosa.org/"}, {"content_hash": "31e6fed74e08b17a593b5cd2cbeb0a78cabfc0b279a716fc55396cf9dc98d1d7", "fetched_at": "2026-08-29T08:26:31.879895+00:00", "kind": "registry_pypi", "missing": false, "url": "https://pypi.org/pypi/librosa/json"}], "taxonomy_version": 1}, "enriched": {"inputs": [], "kind": "computed", "method": "enrichment_status"}, "function": {"confidence": null, "enriched_at": "2026-08-29T17:26:16.205357+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "b1b5c41f1aa4de033472662a5c755f9f0d717fe95751216081f193f33264ea67", "fetched_at": "2026-08-28T04:10:23.625162+00:00", "kind": "readme", "missing": false, "url": "https://github.com/librosa/librosa"}, {"content_hash": "6a672a97afcc9a4905abca7dbcf11fbf27b8b7b66ac1dfa8defcb79cb4a49c75", "fetched_at": "2026-08-29T08:26:31.875354+00:00", "kind": "homepage", "missing": false, "url": "https://librosa.org/"}, {"content_hash": "31e6fed74e08b17a593b5cd2cbeb0a78cabfc0b279a716fc55396cf9dc98d1d7", "fetched_at": "2026-08-29T08:26:31.879895+00:00", "kind": "registry_pypi", "missing": false, "url": "https://pypi.org/pypi/librosa/json"}], "taxonomy_version": 1}, "health_score": {"inputs": ["days_since_push", "days_since_release", "archived"], "kind": "computed", "method": "health_v1"}, "homepage": {"kind": "observed", "observed_at": "2026-08-28T04:10:23.625162+00:00", "source": "github"}, "language": {"kind": "observed", "observed_at": "2026-08-28T04:10:23.625162+00:00", "source": "github"}, "license": {"kind": "observed", "observed_at": "2026-08-28T04:10:23.625162+00:00", "source": "github"}, "license_family": {"inputs": ["license"], "kind": "computed", "method": "license_family"}, "maturity": {"confidence": null, "enriched_at": "2026-08-29T17:26:16.205357+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "b1b5c41f1aa4de033472662a5c755f9f0d717fe95751216081f193f33264ea67", "fetched_at": "2026-08-28T04:10:23.625162+00:00", "kind": "readme", "missing": false, "url": "https://github.com/librosa/librosa"}, {"content_hash": "6a672a97afcc9a4905abca7dbcf11fbf27b8b7b66ac1dfa8defcb79cb4a49c75", "fetched_at": "2026-08-29T08:26:31.875354+00:00", "kind": "homepage", "missing": false, "url": "https://librosa.org/"}, {"content_hash": "31e6fed74e08b17a593b5cd2cbeb0a78cabfc0b279a716fc55396cf9dc98d1d7", "fetched_at": "2026-08-29T08:26:31.879895+00:00", "kind": "registry_pypi", "missing": false, "url": "https://pypi.org/pypi/librosa/json"}], "taxonomy_version": 1}, "member_repos": {"kind": "observed", "observed_at": "2026-08-28T04:10:23.625162+00:00", "source": "github"}, "name": {"kind": "observed", "observed_at": "2026-08-28T04:10:23.625162+00:00", "source": "github"}, "platform": {"confidence": null, "enriched_at": "2026-08-29T17:26:16.205357+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "b1b5c41f1aa4de033472662a5c755f9f0d717fe95751216081f193f33264ea67", "fetched_at": "2026-08-28T04:10:23.625162+00:00", "kind": "readme", "missing": false, "url": "https://github.com/librosa/librosa"}, {"content_hash": "6a672a97afcc9a4905abca7dbcf11fbf27b8b7b66ac1dfa8defcb79cb4a49c75", "fetched_at": "2026-08-29T08:26:31.875354+00:00", "kind": "homepage", "missing": false, "url": "https://librosa.org/"}, {"content_hash": "31e6fed74e08b17a593b5cd2cbeb0a78cabfc0b279a716fc55396cf9dc98d1d7", "fetched_at": "2026-08-29T08:26:31.879895+00:00", "kind": "registry_pypi", "missing": false, "url": "https://pypi.org/pypi/librosa/json"}], "taxonomy_version": 1}, "pushed_at": {"kind": "observed", "observed_at": "2026-08-28T04:10:23.625162+00:00", "source": "github"}, "repo": {"kind": "observed", "observed_at": "2026-08-28T04:10:23.625162+00:00", "source": "github"}, "stars": {"kind": "observed", "observed_at": "2026-08-28T04:10:23.625162+00:00", "source": "github"}, "tags": {"confidence": null, "enriched_at": "2026-08-29T17:26:16.205357+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "b1b5c41f1aa4de033472662a5c755f9f0d717fe95751216081f193f33264ea67", "fetched_at": "2026-08-28T04:10:23.625162+00:00", "kind": "readme", "missing": false, "url": "https://github.com/librosa/librosa"}, {"content_hash": "6a672a97afcc9a4905abca7dbcf11fbf27b8b7b66ac1dfa8defcb79cb4a49c75", "fetched_at": "2026-08-29T08:26:31.875354+00:00", "kind": "homepage", "missing": false, "url": "https://librosa.org/"}, {"content_hash": "31e6fed74e08b17a593b5cd2cbeb0a78cabfc0b279a716fc55396cf9dc98d1d7", "fetched_at": "2026-08-29T08:26:31.879895+00:00", "kind": "registry_pypi", "missing": false, "url": "https://pypi.org/pypi/librosa/json"}], "taxonomy_version": 1}, "topics": {"kind": "observed", "observed_at": "2026-08-28T04:10:23.625162+00:00", "source": "github"}, "urls": {"kind": "observed", "observed_at": "2026-08-28T04:10:23.625162+00:00", "source": "github"}, "use_cases": {"confidence": null, "enriched_at": "2026-08-29T17:26:16.205357+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "b1b5c41f1aa4de033472662a5c755f9f0d717fe95751216081f193f33264ea67", "fetched_at": "2026-08-28T04:10:23.625162+00:00", "kind": "readme", "missing": false, "url": "https://github.com/librosa/librosa"}, {"content_hash": "6a672a97afcc9a4905abca7dbcf11fbf27b8b7b66ac1dfa8defcb79cb4a49c75", "fetched_at": "2026-08-29T08:26:31.875354+00:00", "kind": "homepage", "missing": false, "url": "https://librosa.org/"}, {"content_hash": "31e6fed74e08b17a593b5cd2cbeb0a78cabfc0b279a716fc55396cf9dc98d1d7", "fetched_at": "2026-08-29T08:26:31.879895+00:00", "kind": "registry_pypi", "missing": false, "url": "https://pypi.org/pypi/librosa/json"}], "taxonomy_version": 1}, "what_it_is": {"confidence": null, "enriched_at": "2026-08-29T17:26:16.205357+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "b1b5c41f1aa4de033472662a5c755f9f0d717fe95751216081f193f33264ea67", "fetched_at": "2026-08-28T04:10:23.625162+00:00", "kind": "readme", "missing": false, "url": "https://github.com/librosa/librosa"}, {"content_hash": "6a672a97afcc9a4905abca7dbcf11fbf27b8b7b66ac1dfa8defcb79cb4a49c75", "fetched_at": "2026-08-29T08:26:31.875354+00:00", "kind": "homepage", "missing": false, "url": "https://librosa.org/"}, {"content_hash": "31e6fed74e08b17a593b5cd2cbeb0a78cabfc0b279a716fc55396cf9dc98d1d7", "fetched_at": "2026-08-29T08:26:31.879895+00:00", "kind": "registry_pypi", "missing": false, "url": "https://pypi.org/pypi/librosa/json"}], "taxonomy_version": 1}, "when_to_avoid": {"confidence": null, "enriched_at": "2026-08-29T17:26:16.205357+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "b1b5c41f1aa4de033472662a5c755f9f0d717fe95751216081f193f33264ea67", "fetched_at": "2026-08-28T04:10:23.625162+00:00", "kind": "readme", "missing": false, "url": "https://github.com/librosa/librosa"}, {"content_hash": "6a672a97afcc9a4905abca7dbcf11fbf27b8b7b66ac1dfa8defcb79cb4a49c75", "fetched_at": "2026-08-29T08:26:31.875354+00:00", "kind": "homepage", "missing": false, "url": "https://librosa.org/"}, {"content_hash": "31e6fed74e08b17a593b5cd2cbeb0a78cabfc0b279a716fc55396cf9dc98d1d7", "fetched_at": "2026-08-29T08:26:31.879895+00:00", "kind": "registry_pypi", "missing": false, "url": "https://pypi.org/pypi/librosa/json"}], "taxonomy_version": 1}, "when_to_choose": {"confidence": null, "enriched_at": "2026-08-29T17:26:16.205357+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "b1b5c41f1aa4de033472662a5c755f9f0d717fe95751216081f193f33264ea67", "fetched_at": "2026-08-28T04:10:23.625162+00:00", "kind": "readme", "missing": false, "url": "https://github.com/librosa/librosa"}, {"content_hash": "6a672a97afcc9a4905abca7dbcf11fbf27b8b7b66ac1dfa8defcb79cb4a49c75", "fetched_at": "2026-08-29T08:26:31.875354+00:00", "kind": "homepage", "missing": false, "url": "https://librosa.org/"}, {"content_hash": "31e6fed74e08b17a593b5cd2cbeb0a78cabfc0b279a716fc55396cf9dc98d1d7", "fetched_at": "2026-08-29T08:26:31.879895+00:00", "kind": "registry_pypi", "missing": false, "url": "https://pypi.org/pypi/librosa/json"}], "taxonomy_version": 1}}, "score": {"components": {"activity": 99, "longevity": 100, "rhythm": 65}, "computed_at": "2026-09-02T17:46:02.011165+00:00", "flags": [], "formula": "round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)", "inputs": {"age_days": 5065, "days_push": 11, "days_rel": 22, "gap_med": 518, "n_releases_24m": 2}, "score": 87, "version": 2}, "staleness": {"enrichment_outdated": false, "low_confidence": false, "scrape_days": 9, "stale_scrape": false}}