Is timing control of Japanese speech rhythm constrained by syntactic structure?

对日语短话语进行声学分析，探讨句法短语的时间波动。参照纯短语话语的平均时长，分析句子话语中各个短语的时长。虽然日语被认为是一种道德时间节奏，道德时间的波动很小，但句末短语或短语前深层句法边界的持续时间相对较长。在一个较长的短语之前的短语相对较短。音乐酒吧的持续时间也进行了声学分析。研究了快节奏的古典音乐作品。结果还显示，通常由四个小节组成的乐句结尾有“最后延长”的趋势。然而，在长时间的酒吧之前，酒吧的持续时间通常很短。在一般的四小节乐句结构中，经常观察到“短-长-短-长”的模式。

Short Japanese utterances were analyzed acoustically to investigate the temporal fluctuation of syntactic phrases. With reference to the average duration of the phrase-only utterances, duration of each phrase within the sentence utterance was analyzed. Though Japanese is said to have a mora-timed rhythm with little fluctuation of mora duration, duration of a sentence-final phrase or a phrase just before a deep syntactic boundary was relatively longer. The phrase just before a prolonged phrase was relatively shorter.Duration of a musical bar was also acoustically analyzed. Pieces of classical music with quick tempo were investigated. The results also showed the tendency of "Final-lengthening" at the end of a musical phrase, which normally consists of four bars. However, the duration of a bar just before the prolonged one was often found significantly short. Within the general four-bar phrase structure, a "Short-Long-Short-Long" pattern was often observed.