日本語の母音無声化に関するC/Dモデルの入力情報について(<特集>音声科学の最前線 : C/Dモデルその音声学・音形論への衝撃)

The C/D model (Fujimura 1992, 2007) is an explicit framework that calculates the continuous physical gestures and quantitative phonetic information of speech sounds from the input data which consist of the qualitative phonological information. Fujimura proposes that this input information is given in the form of a syllable-based set of unary and underspecified phonological features rather than a set of binary features used by many phonological theories. This study argues for the structure of the syllable-based input information with 'mora sets', and representations of unary features that define the qualitive characters of the impulse response functions. This argument is developed based on a discussion of vowel devoicing in Japanese.