Training DeepFilterNet with Accurate Room Acoustic Simulations Improves Single-Channel Speech Enhancement
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Electrical Engineering and Systems Science > Audio and Speech Processing
Title:Training DeepFilterNet with Accurate Room Acoustic Simulations Improves Single-Channel Speech Enhancement
Abstract:We investigate how the realism of synthetic room impulse response (RIR) datasets affects the training of DeepFilterNet3 for single-channel speech enhancement. We compare a DNS4 image-source-method (ISM) RIR dataset with a higher-acoustic-fidelity dataset generated using hybrid wave-based and geometrical acoustics simulation. Rather than isolating individual simulation factors, we compare complete RIR generation pipelines while keeping the enhancement model unchanged. Models are evaluated on unseen measured RIRs using objective speech enhancement metrics and downstream automatic speech recognition (ASR). Training with the higher-fidelity dataset consistently yields modest improvements in objective metrics and substantially lower ASR word error rates than the ISM dataset. Although the experiments do not attribute these gains to individual modelling components, they show that increasing the overall realism of synthetic acoustic training data improves the generalization of DeepFilterNet3 to unseen measured environments.
| Comments: | 5 pages, 2 figures, IWAENC 2026 |
| Subjects: | Audio and Speech Processing (eess.AS); Machine Learning (cs.LG); Computational Physics (physics.comp-ph) |
| Cite as: | arXiv:2608.20971 [eess.AS] |
| (or arXiv:2608.20971v1 [eess.AS] for this version) | |
| https://doi.org/10.48550/arXiv.2608.20971
arXiv-issued DOI via DataCite (pending registration)
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Submission history
From: Alessia Milo Ph.D. [view email][v1] Fri, 21 Aug 2026 10:50:00 UTC (409 KB)
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