BUDDy: Single-Channel Blind Unsupervised Dereverberation with Diffusion Models

arXiv:2405.04272v1 Announce Type: cross
Abstract: In this paper, we present an unsupervised single-channel method for joint blind dereverberation and room impulse response estimation, based on posterior sampling with diffusion models. We parameterize the reverberation operator using a filter with exponential decay for each frequency subband, and iteratively estimate the corresponding parameters as the speech utterance gets refined along the reverse diffusion trajectory. A measurement consistency criterion enforces the fidelity of the generated speech with the reverberant measurement, while an unconditional …

abstract arxiv blind buddy cs.lg cs.sd diffusion diffusion models eess.as filter paper parameters posterior reverberation room sampling type unsupervised