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arXiv · 2609.37813

CommSketch: How Speaking while Sketching Steers Human--AI Design Ideation

Weiyan Shi·Darryl Lim·Geraldine Quek·Kenny Tsu Wei Choo
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Abstract

Designers often speak while sketching when explaining ideas, yet AI design tools often rely on sketches or prompts, overlooking context expressed as ideas develop. We developed a sketch-based AI design interface that jointly interprets sketches and concurrent speech. Through a between-subjects study ($N=24$), we examined how speaking while sketching steers human--AI design ideation compared with sketches alone. For creativity support, concurrent speech supported natural expression of design intent and efficient visualisation. For human--AI collaboration, speech helped establish a shared understanding of design intent, supported significantly higher perceived alignment ($p<.05$), and enabled participants to guide AI contributions as ideas co-evolved. We discuss how future human--AI design tools could support dynamic alignment, broader multimodal expression, and human--AI co-creativity.

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Weiyan Shi, Darryl Lim, Geraldine Quek, Kenny Tsu Wei Choo. 2026-09-29. CommSketch: How Speaking while Sketching Steers Human--AI Design Ideation. https://arxiv.org/abs/2609.37813

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