MOSPA: Human Motion Generation Driven by Spatial Audio
Authors: name: Shuyang Xu; name: Zhiyang Dou; name: Mingyi Shi; name: Liang Pan; name: Leo Ho; name: Jingbo Wang; name: Yuan Liu; name: Cheng Lin; name: Yuexin Ma; name: Wenping Wang; name: Taku Komura
Published: 2025-07-16 06:33:11

Abstract: Enabling virtual humans to dynamically and realistically respond to diverse
auditory stimuli remains a key challenge in character animation, demanding the
integration of perceptual modeling and motion synthesis. Despite its
significance, this task remains largely unexplored. Most previous works have
primarily focused on mapping modalities like speech, audio, and music to
generate human motion. As of yet, these models typically overlook the impact of
spatial features encoded in spatial audio signals on human motion. To bridge
this gap and enable high-quality modeling of human movements in response to
spatial audio, we introduce the first comprehensive Spatial Audio-Driven Human
Motion (SAM) dataset, which contains diverse and high-quality spatial audio and
motion data. For benchmarking, we develop a simple yet effective
diffusion-based generative framework for human MOtion generation driven by
SPatial Audio, termed MOSPA, which faithfully captures the relationship between
body motion and spatial audio through an effective fusion mechanism. Once
trained, MOSPA could generate diverse realistic human motions conditioned on
varying spatial audio inputs. We perform a thorough investigation of the
proposed dataset and conduct extensive experiments for benchmarking, where our
method achieves state-of-the-art performance on this task. Our model and
dataset will be open-sourced upon acceptance. Please refer to our supplementary
video for more details.