Results 111 to 120 of about 2,822,972 (301)
Speaker Adapted Beamforming for Multi-Channel Automatic Speech Recognition [PDF]
arXiv, 2018 This paper presents, in the context of multi-channel ASR, a method to adapt a mask based, statistically optimal beamforming approach to a speaker of interest. The beamforming vector of the statistically optimal beamformer is computed by utilizing speech and noise masks, which are estimated by a neural network.
arxiv
Journal of Biophotonics, Volume 18, Issue 3, March 2025.We demonstrated the superior efficacy of the single‐element scanning method over the transducer array system in the context of brain hemorrhage detection. This research highlights the potential for enhancing hemorrhage detection sensitivity through careful design and optimization of the proposed method, thereby increasing its viability for clinical ...
Juliana Benavides Lara +2 more
wiley +1 more source
Energy-Efficient Deterministic Adaptive Beamforming Algorithms for Distributed Sensor/Relay Networks [PDF]
arXiv, 2015 In this study, energy-efficient deterministic adaptive beamforming algorithms are proposed for distributed sensor/relay networks. Specifically, DBSA, D-QESA, D-QESA-E, and a hybrid algorithm, hybrid-QESA, that combines the benefits of both deterministic and random adaptive beamforming algorithms, are proposed. Rigorous convergence analyses are provided
arxiv
Geophysical Research Letters, Volume 52, Issue 4, 28 February 2025.Abstract Megathrust earthquakes often break the slab‐crust interface and radiate high‐frequency seismic waves from the down dip of their coseismic slip. In contrast, we show that the 2021 Mw8.1 Kermadec earthquake deviates from this mode. We resolve the kinematic rupture process of the event by leveraging finite fault inversions and a calibrated tele ...
Hongyu Zeng, Shengji Wei, Hongfeng Yang
wiley +1 more source
Deep Learning‐Driven Modeling of Dynamic Acoustic Sensing in Biomimetic Soft‐Robotic Pinnae
Applied AI Letters, Volume 6, Issue 1, February 2025.ABSTRACT Biological function often depends on complex mechanisms of a dynamic, time‐variant nature. An example is certain bat species (horseshoe bats—Rhinolophidae) that use intricate pinna musculatures to execute a variety of pinna deformations. While prior work has indicated the potential significance of these motions for sensory information encoding,
Sounak Chakrabarti, Rolf Müller
wiley +1 more source
Far-Field RF Wireless Power Transfer with Blind Adaptive Beamforming for Internet of Things Devices
IEEE Access, 2017 Wireless power transfer (WPT) has long been one of the main goals of Nikola Tesla, the forefather of electromagnetic applications. In this paper, we investigate radio-frequency beamforming in the radiative far field for WPT. First, an analytical model of
Pavan Yedavalli +3 more
semanticscholar +1 more source
Adaptive Phase Rolling for Opportunistic Beamforming in OFDMA Systems with a Small Number of Users
The Scientific World Journal, 2014 The performance of opportunistic beamforming might be degraded if the number of users is small. This paper proposes an adaptive opportunistic beamforming technique for orthogonal frequency division multiple access systems, which can produce good results ...
Minjoong Rim
doaj +1 more source
A digital beamforming algorithm of horizontally polarized directional antenna array
Dianzi Jishu Yingyong, 2020 In this paper, the digital beamforming algorithm for horizontally polarized directional antenna array in narrowband multipath environment is studied.
Tang Tao, Ma Huan, Wu Zhidong
doaj +1 more source
Advanced Physics Research, Volume 4, Issue 2, February 2025.An overview of the fundamental principles of polarization manipulation, as well as its recent applications based on terahertz metasurfaces are summarized. New polarization detection methods such as polarization state conversion, polarization‐selective absorption, polarization‐selective focusing, and vector beam construction are discussed.
Yongliang Liu +6 more
wiley +1 more source
Passive Acoustic Mapping Using Data-Adaptive Beamforming Based on Higher Order Statistics
IEEE Transactions on Medical Imaging, 2018 Sources of nonlinear acoustic emissions, particularly those associated with cavitation activity, play a key role in the safety and efficacy of current and emerging therapeutic ultrasound applications, such as oncological drug delivery, blood-brain ...
Erasmia Lyka +4 more
semanticscholar +1 more source