The Amplitude Modulation Structure of Japanese Infant- and Child-Directed Speech: Longitudinal Data Reveal Universal Acoustic Physical Structures That Accommodate Both Syllabic and Moraic Timing
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Infant-directed speech (IDS) is highly rhythmic, and in European languages, it is dominated by patterns of amplitude modulation (AM) peaking at ∼2 Hz (reflecting prosody) and ∼5 Hz (reflecting individual syllables). The rhythm structure of spoken Japanese is... ...
