Stage-Wise and Prior-Aware Neural Speech Phase Prediction
<|reference_start|>Stage-Wise and Prior-Aware Neural Speech Phase Prediction: This paper proposes a novel Stage-wise and Prior-aware Neural Speech Phase Prediction (SP-NSPP) model, which predicts the phase spectrum from input amplitude spectrum by two-stage neural networks. In the initial prior-construction stage, we preliminarily predict a rough prior phase spectrum from the amplitude spectrum. The subsequent refinement stage transforms the amplitude spectrum into a refined high-quality phase spectrum conditioned on the prior phase. Networks in both stages use ConvNeXt v2 blocks as the backbone and adopt adversarial training by innovatively introducing a phase spectrum discriminator (PSD). To further improve the continuity of the refined phase, we also incorporate a time-frequency integrated difference (TFID) loss in the refinement stage. Experimental results confirm that, compared to neural network-based no-prior phase prediction methods, the proposed SP-NSPP achieves higher phase prediction accuracy, thanks to introducing the coarse phase priors and diverse training criteria. Compared to iterative phase estimation algorithms, our proposed SP-NSPP does not require multiple rounds of staged iterations, resulting in higher generation efficiency.<|reference_end|>
@article{liu2024stage-wise,
    title={Stage-Wise and Prior-Aware Neural Speech Phase Prediction},
    author={Fei Liu, Yang Ai, Hui-Peng Du, Ye-Xin Lu, Rui-Chen Zheng, Zhen-Hua
  Ling},
    journal={arXiv preprint arXiv:2410.04990},
    year={2024},
    archivePrefix={arXiv},
    eprint={2410.04990},
    primaryClass={cs.SD cs.AI eess.AS}
}