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Youna Ji

3 accepted papers

2023

An Empirical Study on Speech Restoration Guided by Self-Supervised Speech Representation

ICASSP 2023accepted

Enhancing speech quality is an indispensable yet difficult task as it is often complicated by a range of degradation factors. In addition to additive noise, reverberation, clipping, and speech attenuation can all adversely affect speech quality. Speech restoration aims to recover speech components f…

Cited by 0SourceScholar
2023

Diffusion-Based Generative Speech Source Separation

ICASSP 2023accepted

We propose DiffSep, a new single channel source separation method based on score-matching of a stochastic differential equation (SDE). We craft a tailored continuous time diffusion-mixing process starting from the separated sources and converging to a Gaussian distribution centered on their mixture.…

Cited by 0SourceScholar
2015

A priori SAP estimator based on the magnitude square coherence for dual-channel microphone system

ICASSP 2015accepted

In this paper, we present a time-frequency (TF)-dependent a priori speech absence probability (SAP) estimator utilizing the magnitude square coherence (MSC) between two microphone signals. It is shown that the normalized SNR can be numerically computed from the MSC by solving a quadratic equation. B…

Cited by 0SourceScholar