Results 31 to 40 of about 7,593 (278)
The Astrophysical Journal, 2023 We present the first results from a 100-day Swift, NICER, and ground-based X-ray–UV–optical reverberation mapping campaign of the Narrow-line Seyfert 1 Mrk 335, when it was in an unprecedented low X-ray flux state.
Erin Kara +39 more
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A channel-selection criterion for suppressing reverberation in cochlear implants [PDF]
The Journal of the Acoustical Society of America, 2011 Little is known about the extent to which reverberation affects speech intelligibility by cochlear implant (CI) listeners. Experiment 1 assessed CI users’ performance using Institute of Electrical and Electronics Engineers (IEEE) sentences corrupted with varying degrees of reverberation.
Kokkinakis, Kostas +2 more
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EURASIP Journal on Advances in Signal Processing, 2022 This paper proposes a novel approach for improving the speech of a single speaker in noisy reverberant environments. The proposed approach is based on using a beamformer with a large number of virtual microphones with the suggested arrangement on an open
Mohammad Ebrahim Sadeghi +2 more
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Linear frequency modulation reverberation suppression using difference of singular values [PDF]
The Journal of the Acoustical Society of America, 2008 This letter proposes a reverberation suppression method to improve the target detection probability in reverberation environment induced by a linear frequency modulation signal. Using the singular value decomposition and an assumption of local spatial stationarity, the proposed algorithm suppresses reverberation utilizing the difference of singular ...
Hyung Soo, Lee, Kyun Kyung, Lee
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, 2014 Supermassive black holes in active galactic nuclei (AGNs) undergo a wide range of accretion rates, which lead to diversity of appearance. We consider the effects of anisotropic radiation from accretion disks on the broad-line region (BLR), from the ...
Du, P., Ho, L. C., Qiu, J., Wang, J. -M.
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Channel and temporal-frequency attention UNet for monaural speech enhancement
EURASIP Journal on Audio, Speech, and Music Processing, 2023 The presence of noise and reverberation significantly impedes speech clarity and intelligibility. To mitigate these effects, numerous deep learning-based network models have been proposed for speech enhancement tasks aimed at improving speech quality. In
Shiyun Xu, Zehua Zhang, Mingjiang Wang
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, 2018 We propose a new robust distributed linearly constrained beamformer which utilizes a set of linear equality constraints to reduce the cross power spectral density matrix to a block-diagonal form.
Hendriks, Richard C. +3 more
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Efficient Approach for OS-CFAR 2D Technique Using Distributive Histograms and Breakdown Point Optimal Concept applied to Acoustic Images [PDF]
, 2019 In this work, a new approach to improve the algorithmic efficiency of the Order Statistic-Constant False Alarm Rate (OS-CFAR) applied in two dimensions (2D) is presented.
Acosta, Gerardo Gabriel +3 more
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Ultrasonic Reverberation Clutter Suppression Using Multiphase Apodization With Cross Correlation [PDF]
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2016 Despite numerous recent advances in medical ultrasound imaging, reverberation clutter from near-field anatomical structures, such as the abdominal wall, ribs, and tissue layers, is one of the major sources of ultrasound image quality degradation. Reverberation clutter signals are undesirable echoes, which arise as a result of multiple reflections of ...
Junseob Shin +3 more
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A unified convolutional beamformer for simultaneous denoising and dereverberation
, 2019 This paper proposes a method for estimating a convolutional beamformer that can perform denoising and dereverberation simultaneously in an optimal way.
Kinoshita, Keisuke, Nakatani, Tomohiro
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