feat: floor-covering impact improvement on a mock-up (ISO 16251-1:2014) (#130)
Add the laboratory method for the improvement of impact sound insulation ΔL of
soft, locally-reacting floor coverings (carpet, PVC, linoleum) measured on a
small concrete mock-up via structure-borne acceleration levels, plus the
ISO 717-2 weighted improvement ΔLw it feeds.
- weighted_impact_improvement (insulation.py): ISO 717-2:2020 Clause 5 ΔLw =
78 - Ln,r,w using the heavyweight reference floor of Table 4, reusing the
verified weighted_impact_rating engine
- floor_covering_improvement.py (ISO 16251-1):
- acceleration_level (Formula 1, a0 = 1e-6 m/s²)
- background_corrected_level (Formula 2, three-branch rule with a
limit-of-measurement flag)
- impact_improvement: Formula (2) per position -> difference (3) -> mean over
positions (4); accepts (bands,) or (positions, bands) levels
- improvement_octave_bands (Formula 5)
- FloorCoveringImprovementResult with ΔLw, the > ΔL limit mask and .plot()
- Conformance checks: ISO 717-2 reference-floor rating (78 dB, CI -11) and the
ΔL=0 -> ΔLw=0 identity (109/109). ISO 16251-1 has no worked numeric example
(Annex B is a blank form), so the oracle is the ISO 717-2 reference floor.
- generate_floor_covering_improvement figure (EN/ES × light/dark)
- Building-acoustics guide §7 and API reference rows (EN + ES)
- 20 tests covering all formulas, the per-position ordering and validation
feat: floor-covering impact improvement on a mock-up (ISO 16251-1:2014) (#130)
Add the laboratory method for the improvement of impact sound insulation ΔL of
soft, locally-reacting floor coverings (carpet, PVC, linoleum) measured on a
small concrete mock-up via structure-borne acceleration levels, plus the
ISO 717-2 weighted improvement ΔLw it feeds.
- weighted_impact_improvement (insulation.py): ISO 717-2:2020 Clause 5 ΔLw =
78 - Ln,r,w using the heavyweight reference floor of Table 4, reusing the
verified weighted_impact_rating engine
- floor_covering_improvement.py (ISO 16251-1):
- acceleration_level (Formula 1, a0 = 1e-6 m/s²)
- background_corrected_level (Formula 2, three-branch rule with a
limit-of-measurement flag)
- impact_improvement: Formula (2) per position -> difference (3) -> mean over
positions (4); accepts (bands,) or (positions, bands) levels
- improvement_octave_bands (Formula 5)
- FloorCoveringImprovementResult with ΔLw, the > ΔL limit mask and .plot()
- Conformance checks: ISO 717-2 reference-floor rating (78 dB, CI -11) and the
ΔL=0 -> ΔLw=0 identity (109/109). ISO 16251-1 has no worked numeric example
(Annex B is a blank form), so the oracle is the ISO 717-2 reference floor.
- generate_floor_covering_improvement figure (EN/ES × light/dark)
- Building-acoustics guide §7 and API reference rows (EN + ES)
- 20 tests covering all formulas, the per-position ordering and validation
Audit pass 8: retrofit the house conventions onto the legacy guides (#117)
* docs: retrofit the house conventions onto the legacy guides
Audit batch 8 - the pre-convention guides catch up with the style the
newer ones follow, on all three surfaces (repo, site EN, site ES):
- Standards footers for the ten guides that cited clauses inline but
never closed with the normative scope (calibration, filter-banks,
intensity, levels, time-weighting, weighting, outdoor-propagation,
sound-power, psychoacoustics, plus materials synced from the site
style and a new room-acoustics footer); block-processing,
multichannel and getting-started verified as having no normative
citations to footer
- every touched snippet is now self-contained or carries an explicit
reuse annotation, and ~20 prints gained expected outputs EXECUTED
against the library (levels LN values re-verified, materials
# 222956, human-vibration VDV/MTVV/crest, getting-started ~91 dB
bands, Zwicker sone/phon values, enclosed-space RT spectrum)
- 12 figure-reproduction <details> blocks added (materials x3,
outdoor-propagation x2, time-weighting x2, weighting x3,
speech-intelligibility, getting-started - with an honest note where
the committed figure overlays extra context), all verified runnable
- structural reorders, content-preserving: the exponential detector now
precedes the F/S/I modes; the filter parameter table follows the
comparison it references; weighting opens with 'Where the curves come
from'; block-processing gains a motivating opening and drops its
duplicated constraints list; the raw LaTeX in human-vibration code
spans becomes proper math; F2/F3/F4 defined in prose in intensity
- sound-power SS1-3 gain result figures: three new deterministic
generators (12 PNG variants, ES translations, visually verified)
embedded with captions and <details> using each result's .plot()
* docs: address the review findings on the legacy-conventions batch
- NullFormatter imported from matplotlib.ticker in the SII snippet
(plt.NullFormatter does not exist) (Copilot)
- eps floor inside the log10 of the three FFT-magnitude plots in the
weighting snippets, verified warning-free with -W error (Copilot)
- the getting-started figure snippet now reproduces the committed
figure including the gray PSD overlay, note removed (CodeRabbit)
- 8-tau settling is ~99.97 %, not 99.8 % (CodeRabbit)
- the intensity result generator drops its blanket warning suppression
(this data fires none) and masks non-finite bands instead of
nan_to_num zero bars; regenerated variants are byte-identical
(Gemini, CodeRabbit)
- the outdoor attenuation stacks use separate positive/negative
baselines - the 63 Hz ground term (-4.65 dB) now hangs below zero in
BOTH the snippet and the committed generator figure, whose four
variants regenerate (CodeRabbit, Major)
- the IEC verification claim narrows to what is true: the example
verifies the 200 ms Fast row; CI covers Table 4 down to 1 ms for F
and 2 ms for S (CodeRabbit)
- freqs = res.frequencies added to the three sound-power by-hand blocks
(CodeRabbit)
feat: IEC 61260:1995 / ANSI S1.11-2004 class 0 filter verification (#126)
* feat: IEC 61260:1995 / ANSI S1.11-2004 class 0 filter verification
verify_filter_class and class_limits gain an `edition` argument. The default
"2014" path (IEC 61260-1:2014, classes 1 and 2) is unchanged; edition "1995"
selects the withdrawn IEC 61260:1995 / ANSI S1.11-2004 Table 1, which adds the
stricter laboratory-grade class 0 and whose class 1/2 masks differ slightly
from the 2014 edition.
The 1995/ANSI octave-band Table 1 was transcribed digit-for-digit and verified
identical between the two standards (dual-oracle clean-room). The fractional-
octave breakpoint mapping is shared: 1995 Annex B equation (10) is identical to
2014 Formula (9), so the existing _map_breakpoint is reused for both editions.
The library default (Butterworth order 6) already meets class 0 across the usual
configurations (octave/third-octave, 32-96 kHz); the non-Butterworth
architectures cannot reach the class mask by construction (ripple / flat group
delay), so defaults are unchanged and the class each architecture reaches is
documented instead.
Adds a class-0 conformance check (99/99), the EN/ES filter_class0_mask figure,
tests cross-checked against a shared reference_data copy, the "Class 0" doc
section (guide EN/ES + API refs EN/ES) and regenerated CONFORMANCE.md /
llms-full.txt.
* docs: address bot review — scope class-0 claims, fix English decimals
- compliance.py: English docstring tolerances use dot decimals and ± symbol
(were decimal commas, inconsistent in an English context).
- api-reference (docs + site EN/ES): qualify overall_class by edition
(1/2/None for "2014"; 0/1/2/None for "1995"); neutralize the ES headers that
still said "IEC 61260-1:2014" while documenting the edition switch.
- filter-banks (docs + site EN/ES): narrow the class-0 wording to the verified
order-6 Butterworth octave/third-octave banks at 48 kHz; drop the untested
32-96 kHz range and advise re-running verify_filter_class away from those
settings.
- generate_graphs.py: fix misleading "filter_class0_mask.png" print (output is
SVG).
- test_compliance.py: assert the class-0/1/2 minimum ordering the docstring
already promised (previously only the maximum ordering was checked).