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emergent family

πŸ“‘ Spectral & cepstral shape (parameter-free)

3 novel Β· 1 crypto-prior Β· 1 excluded. Each row links its FOSS implementation + license + paper. Empirical orthogonality deferred.

#CandidateFOSS implementation @ licensePaper Β· provenanceCoverage
#72 psd_wiener_spectral_flatness
Tonality-vs-noise descriptor of a bar's signal: ratio of the geometric mean to the arithmetic mean of the power spectrum of the mean-removed intra-bar
πŸ”Ž CRYPTO-PRIOR: present in patterns/crypto lit-scan (provenance only; still forex-proposable
librosa/librosa (librosa.feature.spectral_flatness)
ISC
arXiv:1905.02284
git-anchor: absent @c803ef96e + @2d308f1c
crypto-prior
#73 psd_shannon_spectral_entropy_norm
Normalized Shannon spectral entropy: treat the normalized PSD of the bar's intra-bar tick path (or 200-bar close series) as a probability distribution
πŸ”Ž FOREX-COVERED: evaluated on forex_bars in the 2026-05-26/27 Gate campaign
raphaelvallat/antropy (antropy.spectral_entropy, method='fft', normali
BSD-3-Clause
DOI:10.1016/0013-4694(91)90138
git-anchor: absent @c803ef96e + @2d308f1c
β›” forex-dup
#74 psd_spectral_centroid_normfreq
Spectral center-of-mass ('brightness') of the bar's signal: the power-weighted mean frequency of the intra-bar mid tick path (or 200-bar close series)
⚠ forex-roadmap-mentioned (listed as an UNTESTED inventory item in the May Gate extended-inventory; not yet evaluated β€” ve
πŸ”Ž FOREX-MENTIONED-ONLY (roadmap inventory, not evaluated)
librosa/librosa (librosa.feature.spectral_centroid)
ISC
HAL:hal-00692400
git-anchor: absent @c803ef96e + @2d308f1c
not-covered
#75 psd_log_spectral_slope_fullband
Full-band spectral slope: slope of an OLS line fit to log-power vs log-frequency across ALL positive frequency bins (DC excluded) of the bar's intra-b
librosa/librosa (poly_features, order=1, over full band)
ISC
HAL:hal-00692400
git-anchor: absent @c803ef96e + @2d308f1c
not-covered
#76 midpath_zero_crossing_rate_meanremoved
Zero-crossing rate of the mean-removed intra-bar mid-price tick path: fraction of consecutive tick pairs where the de-meaned mid changes sign. A time-
librosa/librosa (librosa.feature.zero_crossing_rate, threshold=0
ISC
DOI:10.1109/PROC.1986.13663
git-anchor: absent @c803ef96e + @2d308f1c
not-covered