feat(python): add MATLAB-compatible oversampling APIs#39
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Expose ifilter, perfosr, and ntfperf wrappers aligned with MATLAB names. Harden extract_freq_components validation, extend OSR sweep options, and document parity in API docs and python_matlab_parity.rst. Co-authored-by: Cursor <cursoragent@cursor.com>
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Jun 11, 2026
Add MATLAB-compatible oversampling APIs, Python oversampling examples, noise-shaping tests, and MATLAB noiseshape helper. Supersedes PR #39.
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Summary
本 PR 为 Python 侧补齐 MATLAB 过采样/分析 API 的命名兼容层，并更新文档与测试。
新增 API（MATLAB 同名入口）
ifilteradctoolbox.ifilterextract_freq_componentsperfosradctoolbox.perfosrsweep_performance_vs_osr，返回(osr, sndr, sfdr, enob)ntfperfadctoolbox.ntfperfntf_analyzer其他 Python 变更
extract_freq_components：增加实数输入与频带[0, 0.5]校验（对齐 MATLABifilter）sweep_performance_vs_osr：新增logscale、smooth参数，贴近 MATLABperfosr行为adctoolbox与oversampling/spectrum子模块导出上述符号oversampling.rst、spectrum.rst、python_matlab_parity.rst（ifilter/perfosr/ntfperf标记为 Matched）tests/unit/oversampling/test_matlab_compat_api.pyChanged files (12)
python/src/adctoolbox/oversampling/ifilter.py(new)python/src/adctoolbox/oversampling/ntfperf.py(new)python/src/adctoolbox/oversampling/perfosr.py(new)python/tests/unit/oversampling/test_matlab_compat_api.py(new)python/src/adctoolbox/__init__.pypython/src/adctoolbox/oversampling/__init__.pypython/src/adctoolbox/spectrum/__init__.pypython/src/adctoolbox/spectrum/extract_freq_components.pypython/src/adctoolbox/spectrum/sweep_performance_vs_osr.pypython/docs/source/api/oversampling.rstpython/docs/source/api/spectrum.rstpython/docs/source/python_matlab_parity.rstTest plan
cd python && uv run pytest tests/unit/oversampling/test_matlab_compat_api.py -qfrom adctoolbox import ifilter, perfosr, ntfperf导入正常