J
J.S. Erkelens
Researcher at Delft University of Technology
Publications - 39
Citations - 957
J.S. Erkelens is an academic researcher from Delft University of Technology. The author has contributed to research in topics: Estimator & Speech enhancement. The author has an hindex of 13, co-authored 39 publications receiving 927 citations.
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Journal ArticleDOI
Minimum Mean-Square Error Estimation of Discrete Fourier Coefficients With Generalized Gamma Priors
TL;DR: In this paper, the authors derived minimum mean-square error estimators of speech DFT coefficient magnitudes as well as of complex-valued DFT coefficients based on two classes of generalized gamma distributions, under an additive Gaussian noise assumption.
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Tracking of Nonstationary Noise Based on Data-Driven Recursive Noise Power Estimation
J.S. Erkelens,Richard Heusdens +1 more
TL;DR: The proposed noise tracking method can accurately track fast changes in noise power level and improvements in segmental signal-to-noise ratio of more than 1 dB can be obtained for the most nonstationary noise sources at high noise levels.
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A data-driven approach to optimizing spectral speech enhancement methods for various error criteria
TL;DR: It is shown that the ''decision-directed'' approach for speech spectral variance estimation can have an important bias at low SNRs, which generally leads to too much speech suppression.
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Correlation-Based and Model-Based Blind Single-Channel Late-Reverberation Suppression in Noisy Time-Varying Acoustical Environments
J.S. Erkelens,Richard Heusdens +1 more
TL;DR: It is shown how this correlation-based approach can be used to estimate the late reverberant spectral variance (LRSV) without having to assume a specific model for the room impulse responses (RIRs) while no explicit estimates of RIR model parameters are needed.
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Ground-Based Remote Sensing of Stratocumulus Properties during CLARA, 1996
R Boers,Hwj Herman Russchenberg,J.S. Erkelens,Victor Venema,van Acap Andre Lammeren,Arnoud Apituley,Schm Suzanne Jongen +6 more
TL;DR: In this article, a method is presented to obtain droplet concentration for water clouds from ground-based remote sensing observations, which relies on observations of cloud thickness, liquid water path, and optical extinction near the cloud base.