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InterSing: Explicit Interaction Dynamics for 3D Duet Singing Animation and Beyond

arXiv · AI, language, vision and robotics · article · Sep 4, 2026 · UTC

We present InterSing, a framework for generating realistic 3D head animations for duet singing performances. Unlike solo singing, duet performance requires each singer to balance individual expressiveness with intermittent interaction at musically salient moments, such as phrase boundaries, synchronized rhythms, and call-and-response passages. Because these interactions are sparse and rhythm-dependent, existing audio-driven animation methods and conversational interaction models do not adequately capture their structure. Our key insight is that duet coordination can be represented as a time-va

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