FlowTSE: Target Speaker Extraction with Flow Matching

Fuente: arXiv
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Main Authors: Navon, Aviv, Shamsian, Aviv, Segal-Feldman, Yael, Glazer, Neta, Hetz, Gil, Keshet, Joseph
Format: Preprint
Published: 2025
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author Navon, Aviv
Shamsian, Aviv
Segal-Feldman, Yael
Glazer, Neta
Hetz, Gil
Keshet, Joseph
author_facet Navon, Aviv
Shamsian, Aviv
Segal-Feldman, Yael
Glazer, Neta
Hetz, Gil
Keshet, Joseph
contents Target speaker extraction (TSE) aims to isolate a specific speaker's speech from a mixture using speaker enrollment as a reference. While most existing approaches are discriminative, recent generative methods for TSE achieve strong results. However, generative methods for TSE remain underexplored, with most existing approaches relying on complex pipelines and pretrained components, leading to computational overhead. In this work, we present FlowTSE, a simple yet effective TSE approach based on conditional flow matching. Our model receives an enrollment audio sample and a mixed speech signal, both represented as mel-spectrograms, with the objective of extracting the target speaker's clean speech. Furthermore, for tasks where phase reconstruction is crucial, we propose a novel vocoder conditioned on the complex STFT of the mixed signal, enabling improved phase estimation. Experimental results on standard TSE benchmarks show that FlowTSE matches or outperforms strong baselines.
format Preprint
id arxiv_https___arxiv_org_abs_2505_14465
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle FlowTSE: Target Speaker Extraction with Flow Matching
Navon, Aviv
Shamsian, Aviv
Segal-Feldman, Yael
Glazer, Neta
Hetz, Gil
Keshet, Joseph
Audio and Speech Processing
Machine Learning
Sound
Target speaker extraction (TSE) aims to isolate a specific speaker's speech from a mixture using speaker enrollment as a reference. While most existing approaches are discriminative, recent generative methods for TSE achieve strong results. However, generative methods for TSE remain underexplored, with most existing approaches relying on complex pipelines and pretrained components, leading to computational overhead. In this work, we present FlowTSE, a simple yet effective TSE approach based on conditional flow matching. Our model receives an enrollment audio sample and a mixed speech signal, both represented as mel-spectrograms, with the objective of extracting the target speaker's clean speech. Furthermore, for tasks where phase reconstruction is crucial, we propose a novel vocoder conditioned on the complex STFT of the mixed signal, enabling improved phase estimation. Experimental results on standard TSE benchmarks show that FlowTSE matches or outperforms strong baselines.
title FlowTSE: Target Speaker Extraction with Flow Matching
topic Audio and Speech Processing
Machine Learning
Sound
url https://arxiv.org/abs/2505.14465