Results 31 to 40 of about 432,612 (272)

Reconciling Statistical Models with Practical Experience of Reverberation Chambers [PDF]

, 2009
Presented are novel theoretical probability density functions (PDF) for the magnitude and phase of electromagnetic fields inside reverberation chambers (RC) operating in a dasiagood-but-imperfect regime.
Serra, R., Canavero, Flavio, Serra R.
core   +1 more source

Reverberation suppression algorithm for LS beamforming based on Wiener post-filter

Dianzi Jishu Yingyong, 2018
Reverberation causes speech signal time and frequency to blur, and speech is difficult to understand when serious. In order to improve the speech quality, this paper presents a least squares beamforming reverberation suppression algorithm with Wiener ...
Zhang Xiuzai, Wang Ting, Guo Yecai, Chen Xiaoyan   +3 more
doaj   +1 more source

Multi-Objective NSGA-II Optimization for Broadband Beamforming with Spherical Harmonic Domain Assistance

Sensors, 2023
Sidelobe suppression is a major challenge in wideband beamforming for acoustic research, especially in high noise and reverberation environments. In this paper, we propose a multi-objective NSGA-II wideband beamforming method based on a spherical ...
Zhenghong Liu, Haocheng Zhou, Xiyu Song, Mei Wang, Liuqing Weng   +4 more
doaj   +1 more source

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, Hazrati, Oldooz, Loizou, Philipos C.   +2 more
openaire   +3 more sources

Model-based optimal action selection for Dyna-Q reverberation suppression cognitive sonar

EURASIP Journal on Advances in Signal Processing, 2023
The Doppler shift of low-speed targets is frequently disturbed by the reverberation Doppler spread clutter under the shallow sea. The clutter is generated by underwater scatterers, which increases the difficulty of Doppler estimation.
Yubin Fu, Xiaochuan Ma, Chao Feng, Xingxuan Pei, Pengzhuo Li   +4 more
doaj   +1 more source

A fast reverberation suppression method based on graph Laplacian regularization [PDF]

JASA Express Letters
Traditional low-rank and sparse decomposition methods impose a global low-rank constraint for estimating the reverberation subspace, but they face performance degradation with limited samples and require computationally expensive singular value ...
Wenbo Gou, Hong Liang, Pulin Yang
doaj   +1 more source

Reverberation suppression using non-negative matrix factorization to detect low-Doppler target with continuous wave active sonar

EURASIP Journal on Advances in Signal Processing, 2019
In active sonar systems, the detection of echo from targets can deteriorate due to reverberation. Detection becomes more difficult if targets have low-Doppler frequency and are located near the reverberation band, especially in an environment with low ...
Seokjin Lee, Jun-seok Lim
doaj   +1 more source

A Binaural System For The Suppression Of Late Reverberation

, 1998
Publication in the conference proceedings of EUSIPCO, Rhodes, Greece ...
Katia Lebart, Jean-Marc Boucher, P. N. Denbigh   +2 more
openaire   +2 more sources

UV–Optical Disk Reverberation Lags despite a Faint X-Ray Corona in the Active Galactic Nucleus Mrk 335

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, Aaron J. Barth, Edward M. Cackett, Jonathan Gelbord, John Montano, Yan-Rong Li, Lisabeth Santana, Keith Horne, William N. Alston, Douglas Buisson, Doron Chelouche, Pu Du, Andrew C. Fabian, Carina Fian, Luigi Gallo, Michael R. Goad, Dirk Grupe, Diego H. González Buitrago, Juan V. Hernández Santisteban, Shai Kaspi, Chen Hu, S. Komossa, Gerard A. Kriss, Collin Lewin, Tiffany Lewis, Michael Loewenstein, Anne Lohfink, Megan Masterson, Ian M. McHardy, Missagh Mehdipour, Jake Miller, Christos Panagiotou, Michael L. Parker, Ciro Pinto, Ron Remillard, Christopher Reynolds, Daniele Rogantini, Jian-Min Wang, Jingyi Wang, Dan Wilkins   +39 more
doaj   +1 more source

Performance Analysis of MVDR Beamformer Applied on an End-fire Microphone Array Composed of Unidirectional Microphones

Archives of Acoustics, 2021
Microphone array with minimum variance (MVDR) beamformer is a commonly used method for ambient noise suppression. Unfortunately, the performance of the MVDR beamformer is poor in a real reverberant room due to multipath wave propagation. To overcome this
Zoran ŠARIĆ, Miško SUBOTIĆ, Ružica BILIBAJKIĆ, Marko BARJAKTAROVIĆ, Nebojša ZDRAVKOVIĆ   +4 more
doaj   +1 more source