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Speech enhancement with mixture-of-deep-experts with clean clustering pre-training

2021-02-11 14:18:47
Shlomo E. Chazan, Jacob Goldberger, Sharon Gannot
arXiv_SD
       
Abstract

In this study we present a mixture of deep experts (MoDE) neural-network architecture for single microphone speech enhancement. Our architecture comprises a set of deep neural networks (DNNs), each of which is an 'expert' in a different speech spectral pattern such as phoneme. A gating DNN is responsible for the latent variables which are the weights assigned to each expert's output given a speech segment. The experts estimate a mask from the noisy input and the final mask is then obtained as a weighted average of the experts' estimates, with the weights determined by the gating DNN. A soft spectral attenuation, based on the estimated mask, is then applied to enhance the noisy speech signal. As a byproduct, we gain reduction at the complexity in test time. We show that the experts specialization allows better robustness to unfamiliar noise types.

Abstract (translated)

URL

https://arxiv.org/abs/2102.06034

PDF

https://arxiv.org/pdf/2102.06034.pdf

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