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Tissue segmentation is the mainstay of pathological examination, whereas the manual delineation is unduly burdensome. To assist this time-consuming and subjective manual step, researchers have devised methods to automatically segment…

Image and Video Processing · Electrical Eng. & Systems 2022-08-08 Yang Nan , Peng Tang , Guyue Zhang , Caihong Zeng , Zhihong Liu , Zhifan Gao , Heye Zhang , Guang Yang

State-of-the-art under-determined audio source separation systems rely on supervised end-end training of carefully tailored neural network architectures operating either in the time or the spectral domain. However, these methods are…

Audio and Speech Processing · Electrical Eng. & Systems 2020-05-29 Vivek Narayanaswamy , Jayaraman J. Thiagarajan , Rushil Anirudh , Andreas Spanias

This paper proposes a Bayesian framework for localization of multiple sources in the event of accidental hazardous contaminant release. The framework assimilates sensor measurements of the contaminant concentration with an integrated…

Applications · Statistics 2018-10-18 Young-Jin Park , Piyush M. Tagade , Han-Lim Choi

In this letter, we propose a Gaussian mixture model (GMM)-based channel estimator which is learned on imperfect training data, i.e., the training data are solely comprised of noisy and sparsely allocated pilot observations. In a practical…

Signal Processing · Electrical Eng. & Systems 2023-02-14 Benedikt Fesl , Nurettin Turan , Michael Joham , Wolfgang Utschick

Conventional frequentist learning, as assumed by existing federated learning protocols, is limited in its ability to quantify uncertainty, incorporate prior knowledge, guide active learning, and enable continual learning. Bayesian learning…

Information Theory · Computer Science 2021-08-31 Dongzhu Liu , Osvaldo Simeone

We extend frequency-domain blind source separation based on independent vector analysis to the case where there are more microphones than sources. The signal is modelled as non-Gaussian sources in a Gaussian background. The proposed…

Sound · Computer Science 2019-08-08 Robin Scheibler , Nobutaka Ono

The audio source separation tasks, such as speech enhancement, speech separation, and music source separation, have achieved impressive performance in recent studies. The powerful modeling capabilities of deep neural networks give us hope…

Audio and Speech Processing · Electrical Eng. & Systems 2021-07-15 Lu Zhang , Chenxing Li , Feng Deng , Xiaorui Wang

In this paper, we address a statistical model extension of multichannel nonnegative matrix factorization (MNMF) for blind source separation, and we propose a new parameter update algorithm used in the sub-Gaussian model. MNMF employs…

Separating an audio scene into isolated sources is a fundamental problem in computer audition, analogous to image segmentation in visual scene analysis. Source separation systems based on deep learning are currently the most successful…

Sound · Computer Science 2018-11-07 Prem Seetharaman , Gordon Wichern , Jonathan Le Roux , Bryan Pardo

Isolating individual instruments in a musical mixture has a myriad of potential applications, and seems imminently achievable given the levels of performance reached by recent deep learning methods. While most musical source separation…

Sound · Computer Science 2018-11-08 Prem Seetharaman , Gordon Wichern , Shrikant Venkataramani , Jonathan Le Roux

Unsupervised blind source separation methods do not require a training phase and thus cannot suffer from a train-test mismatch, which is a common concern in neural network based source separation. The unsupervised techniques can be…

Sound · Computer Science 2021-06-11 Christoph Boeddeker , Frederik Rautenberg , Reinhold Haeb-Umbach

In this work, we propose variations of a Gaussian mixture model (GMM) based channel estimator that was recently proven to be asymptotically optimal in the minimum mean square error (MMSE) sense. We account for the need of low computational…

Information Theory · Computer Science 2023-06-06 Benedikt Fesl , Michael Joham , Sha Hu , Michael Koller , Nurettin Turan , Wolfgang Utschick

In this paper, we are interested in audio-visual speech separation given a single-channel audio recording as well as visual information (lips movements) associated with each speaker. We propose an unsupervised technique based on…

Audio and Speech Processing · Electrical Eng. & Systems 2021-09-01 Viet-Nhat Nguyen , Mostafa Sadeghi , Elisa Ricci , Xavier Alameda-Pineda

This paper describes heavy-tailed extensions of a state-of-the-art versatile blind source separation method called fast multichannel nonnegative matrix factorization (FastMNMF) from a unified point of view. The common way of deriving such…

Sound · Computer Science 2022-05-12 Mathieu Fontaine , Kouhei Sekiguchi , Aditya Nugraha , Yoshiaki Bando , Kazuyoshi Yoshii

Separating mixed distributions is a long standing challenge for machine learning and signal processing. Most current methods either rely on making strong assumptions on the source distributions or rely on having training samples of each…

Machine Learning · Computer Science 2019-05-17 Tavi Halperin , Ariel Ephrat , Yedid Hoshen

We propose a new method for training a supervised source separation system that aims to learn the interdependent relationships between all combinations of sources in a mixture. Rather than independently estimating each source from a mix, we…

Sound · Computer Science 2022-03-30 Ethan Manilow , Curtis Hawthorne , Cheng-Zhi Anna Huang , Bryan Pardo , Jesse Engel

Deep Neural Network-based source separation methods usually train independent models to optimize for the separation of individual sources. Although this can lead to good performance for well-defined targets, it can also be computationally…

Sound · Computer Science 2019-08-15 Clement S. J. Doire , Olumide Okubadejo

We propose a spatial loss for unsupervised multi-channel source separation. The proposed loss exploits the duality of direction of arrival (DOA) and beamforming: the steering and beamforming vectors should be aligned for the target source,…

Audio and Speech Processing · Electrical Eng. & Systems 2022-04-04 Kohei Saijo , Robin Scheibler

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…

Audio and Speech Processing · Electrical Eng. & Systems 2022-11-03 Robin Scheibler , Youna Ji , Soo-Whan Chung , Jaeuk Byun , Soyeon Choe , Min-Seok Choi

Single-channel deep speech enhancement approaches often estimate a single multiplicative mask to extract clean speech without a measure of its accuracy. Instead, in this work, we propose to quantify the uncertainty associated with clean…

Audio and Speech Processing · Electrical Eng. & Systems 2023-05-16 Huajian Fang , Timo Gerkmann