Sound Change & Phonological Rules

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Abstractions about syllables, consonant clusters, vowel reduction, phonological opacity, lexical diffusion, transcription, and rule-governed sound change.

14 abstractions in this family — domain-specific abstractions that sit near one another in structural-signature space (k-means over structural-signature embeddings). Each is shown with its short description.

• Consonant cluster — A sequence of adjacent consonantal segments without an intervening vowel within a syllable, word, or declared phonological domain.
• Free Variation — Treat two or more linguistic forms as interchangeable variants of one unit when they can occur in the same environment without changing denotational meaning or grammatical function, while testing whether apparent freedom is probabilistically conditioned.
• Hazaj meter — A quantitative poetic meter built from recurring short-long-long-variable feet in Arabic, Persian, Ottoman and related prosodic traditions.
• Lexical diffusion — A model of sound change in which a phonetic innovation may be abrupt within a word but spreads gradually through the set of eligible lexical items.
• Open syllable lengthening — A sound change or phonological process in which a short vowel lengthens when it occurs in an open syllable.
• Phonological opacity — A surface pattern in which the environment that motivates a phonological process is no longer visible, or the expected process appears not to have applied, because of interaction with another process.
• Phonological rule — A formal mapping from underlying sound representation to a context-conditioned surface realization.
• Prothesis (linguistics) — The addition of a sound or syllable at the beginning of a word without introducing the grammatical or lexical function of a prefix.
• Sonority sequencing principle — A phonotactic generalization that syllable sonority tends to rise toward the nucleus and fall toward the edges, subject to language-specific exceptions.
• Sound change — A diachronic alteration in a language’s phonetic realization or phonological inventory and patterning.
• THL Simplified Phonetic Transcription — A reader-oriented Roman-letter system for representing the pronunciation of Standard Tibetan.
• TRACE (psycholinguistics) — An interactive-activation connectionist model in which feature, phoneme and word units compete and exchange activation during spoken-word recognition.
• Ts–ch merger — A phonological merger in which voiceless alveolar and postalveolar affricates lose their contrast in a language or dialect.
• Vowel reduction in Russian — The systematic change and merger of unstressed Russian vowel qualities according to stress position, consonantal context, dialect and speech style.