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arXiv · 2511.13146

Towards Practical Real-Time Low-Latency Music Source Separation

Junyu Wu·Jie Liu·Tianrui Pan·Jie Tang·Gangshan Wu
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Abstract

In recent years, significant progress has been made in the field of deep learning for music demixing. However, there has been limited attention on real-time, low-latency music demixing, which holds potential for various applications, such as hearing aids, audio stream remixing, and live performances. Additionally, a notable tendency has emerged towards the development of larger models, limiting their applicability in certain scenarios. In this paper, we introduce a lightweight real-time low-latency model called Real-Time Single-Path TFC-TDF UNET (RT-STT), which is based on the Dual-Path TFC-TDF UNET (DTTNet). In RT-STT, we propose a feature fusion technique based on channel expansion. We also demonstrate the superiority of single-path modeling over dual-path modeling in real-time models. Moreover, we investigate the method of quantization to further reduce inference time. RT-STT exhibits superior performance with significantly fewer parameters and shorter inference times compared to state-of-the-art models.

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Junyu Wu, Jie Liu, Tianrui Pan, Jie Tang, Gangshan Wu. 2025-11-17. Towards Practical Real-Time Low-Latency Music Source Separation. https://arxiv.org/abs/2511.13146

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