Linguistic Codex: Phonetic Distance & Diachronic Anomalies

Historical linguistics categorizes sound changes into highly regular shifts vs irregular, anomalous mutations. In this dashboard, every ancestral transition (e.g. Primitive Common Eldarin *p ➔ Sindarin [v]) is analyzed mathematically. Each phoneme is represented as an 18-dimensional vector covering manner, place, voicing, and vowel height/roundedness. By calculating the Euclidean distance between these multi-dimensional vectors for aligned characters, we obtain a precise phonetic distance.

A transition is flagged as a Phonetic Anomaly if its normalized distance d exceeds the language's average distance μ by more than k standard deviations (d ≥ μ + kσ). Adjusting the Standard Deviation Slider (k) filters out standard mutations to expose highly irregular changes, whereas lower values expose conservative, stable transformations.

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📊 Diachronic Phonetic Distance Scatter Plot (2,194 Shifts)

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Highly Conservative (d < μ - kσ)
Quenya (Stable)
Sindarin (Normal)
Phonetic Anomaly (d ≥ μ + kσ)

🔍 Diachronic Shift Inspector

All Languages 0.0000 Mean Distance (μ)
Variance Standard 0.0000 Std Dev (σ)
ACTIVE ANOMALIES COUNT 0 0.0% of dialect dataset

Select a point...

Click on any circle in the scatter plot or a row in the anomalies table below to inspect its phonetic alignment grid.

🎓 Curated Case Studies

Click a historical anomaly below to automatically focus its coordinate on the scatter plot and analyze its articulatory feature shift:

🕸️ 18-D Articulatory Feature Vector Comparison

Compare the detailed articulatory features of the selected aligned parent and child phonemes. Outer boundary represent high affiliation (1.0), inner represents voiceless or unaligned features (0.0).

⚠️ Flagged Anomalies Under Current Threshold

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Dialect Primitive Root Descendant Word Phonetic Distance Deviation (z)
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