Distinctive Feature
24.901Page 1 Feature review; natural classes (1) Distinctive feature: an articulatory/acoustic property that classifies speech sounds (2) Some examples: Feature name Defining properties [+F] [-F] [nasal] Velum position Velum down Velum up m, n, N, a), e), o), j) ,r)... b, d, g, a, e, o, j, r… [voice] Vocal chord vibration Yes No b, d, g, v, z, Z, vowels, p, t, k, s, S, f, h nasals, l, r, glides [aspirated] Glottis held wide open Yes No ([spread glottis]) h, pÓ, tÓ, kÓ, voiceless All others fricatives [coronal] Tip or blade of tongue Tip/blade involved Tip/blade not involved in articulation involved t, s, S, T, l, n… p, k, h, a, w, j… [anterior] Constriction site relative At or in front of ridge Behind ridge to alveolar ridge p, f, t, s, T, d, l, m, n k, S, tS, j, N, :, λ [lateral] Sides of tongue position Lowered Not lowered l, :, L, λ All others, incl. r [consonantal] Contact between Yes No articulators or significant narrowing of vocal tract Stops, fricatives, Vowels, glides (j, w), affricates, nasals, l, h, / varieties of [r] [continuant] Airflow through mouth Yes No Fricatives, laterals, r, Stops, affricates, / glides, vowels, h [syllabic] Center or margin of Center Margin syllable Vowels, r`, m`, n`, l`, s` Glides, other C’s [sonorant] Continuity of spectrum Continuity Discontinuity amplitude in F1-F2 region Nasals, laterals, r, Stops, fricatives, glides, vowels affricates, glottal stop [back] Site of tongue body Back Front constriction u, o, ¨, A, :, w and i, e, y, œ, j uvulars (q, R) 1 24.901Page 2 Feature name Defining properties [+F] [-F] [round] Lip pursing Yes No o, O, u, U, y, w, kw All others [low] Jaw position Lowered Not lowered a, œ, A All others [high] Tongue body vertical Raised Not raised position i, u, y, ¨, j, w, velar C’s All others (3) Speech sounds are bundles of distinctive features.
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