# Phonological Representation **Domain:** Linguistics / Speech and Language Technology **Doc Type:** Canonical Concept Node **Maturity:** Developed **Related:** [[wiki/Computational Linguistics|Computational Linguistics]], [[wiki/Pronunciation Lexicon|Pronunciation Lexicon]], [[wiki/Approximate Phonological Matching|Approximate Phonological Matching]], [[wiki/Prosody and Syllabification|Prosody and Syllabification]], [[wiki/CMU Pronouncing Dictionary|CMU Pronouncing Dictionary]] --- ## Definition **Phonological representation encodes the sound structure of language independently enough from spelling to support operations over pronunciation, syllables, stress and sound correspondence.** Written forms are unreliable guides to sound. Heteronyms such as _dove_ can carry different pronunciations and therefore belong to different rhyme neighborhoods. A useful language system must represent a word as one or more pronunciations and allow pronunciation choice to propagate through retrieval. ## Symbolic Language Engine Context The [[wiki/Symbolic Language Engine|Symbolic Language Engine]] treated rhyme as an operation over sound sequences rather than orthographic endings. Its interface exposed two pronunciations of _dove_ as first-class alternatives with disjoint rhyme sets. This behavior demonstrates that pronunciation multiplicity survived from the lexicon through indexing into the user interface. Phonological representation also supports syllable counting, stress-sensitive rhyme, approximate sequence matching and phrase-level alignment across word boundaries. ## Key Insight **Sound must be represented as sound. Spelling can remain an interface, but it cannot be the computational unit of phonological reasoning.** ## See Also [[wiki/Pronunciation Lexicon|Pronunciation Lexicon]], [[wiki/Approximate Phonological Matching|Approximate Phonological Matching]], [[wiki/Lexical Segmentation|Lexical Segmentation]], [[wiki/Prosody and Syllabification|Prosody and Syllabification]], [[wiki/CMU Pronouncing Dictionary|CMU Pronouncing Dictionary]], [[wiki/McGill English Dictionary of Rhyme|McGill English Dictionary of Rhyme]] ## Sources / Provenance - Primary project account: [[projects/Ten Years Building a Symbolic Language Engine|Ten Years Building a Symbolic Language Engine]]. - Daniel Jurafsky and James H. Martin, *Speech and Language Processing*. - Project evidence from the dual-pronunciation and phrase-bank interfaces.