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Oscillatory automaton for terraced two tone language.  

Oscillatory automaton for terraced two tone language.  

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Formal is Natural: Toward an Ecological Phonology Naturalism Phonology (NP) has a history of opposition to abstractness, to generative linguistics, to formalist approaches, and differs from these in its strong focus on external rather than distributional, structural evidential domains. But evidence domains are orthogonal to empirical and formal met...

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... of these complex factors, tone sequences are more or less arbitrary from a tonological perspective alone, and could be represented by a 1-node network and two tonal transitions, one for H and one for L. However, tonal terracing requires a phonetic interpretation which takes four different possible tone-to-tone transitions into account: HH, HL, LH, LL, for which the following phonetic conditions hold, in which lower case "h" and "l" stand for the phonetic correlates of "H and L": HH: h1 = h2 LH: h > l HL: h >> l LL: l1=l2 Consequently, a more complex network is required in order to capture these constraints. A FSN which will generate or recognise such sequences is shown in Figure 2. These relations can be quantified in terms of pitch ratios (Gibbon 2001); in some languages, the "=" relation is rising for H contexts (upsweep) and falling for L contexts (downdrift), and there are languages with more complex but still FS terracing contexts. ...

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