An Efficient Broadband Adaptive Beamformer without Presteering Delays [PDF]
Sensors, 2021 Broadband adaptive beamformers have been widely used in many areas due to their ability of filtering signals in space domain as well as in frequency domain.
Ming Zhang, Xiaojian Wang, Anxue Zhang
doaj +2 more sources
Multi-Channel Replay Speech Detection Using an Adaptive Learnable Beamformer [PDF]
IEEE Open Journal of Signal ProcessingReplay attacks belong to the class of severe threats against voice-controlled systems, exploiting the easy accessibility of speech signals by recorded and replayed speech to grant unauthorized access to sensitive data.
Michael Neri, Tuomas Virtanen
doaj +3 more sources
Adaptive Beamformer Combined with Phase Coherence Weighting Applied to Ultrafast Ultrasound [PDF]
Applied Sciences, 2018 Ultrafast ultrasound imaging is a promising technique for measurement of fast moving objects. In ultrafast ultrasound imaging, the high temporal resolution is realized at the expense of the lateral spatial resolution and image contrast.
Michiya Mozumi, Hideyuki Hasegawa
doaj +2 more sources
Design of a Novel Antenna Array Beamformer Using Neural Networks Trained by Modified Adaptive Dispersion Invasive Weed Optimization Based Data [PDF]
, 2013 A new antenna array beamformer based on neural networks (NNs) is presented. The NN training is performed by using optimized data sets extracted by a novel Invasive Weed Optimization (IWO) variant called Modified Adaptive Dispersion IWO (MADIWO).
Cosmas, J +4 more
core +2 more sources
Iterative robust adaptive beamforming
EURASIP Journal on Advances in Signal Processing, 2017 The minimum power distortionless response beamformer has a good interference rejection capability, but the desired signal will be suppressed if signal steering vector or data covariance matrix is not precise. The worst-case performance optimization-based
Yang Li, Hong Ma, Li Cheng
doaj +2 more sources
Adaptive digital beamformer intellectual property based on high-level synthesis [PDF]
The Journal of Engineering, 2019 Adaptive digital beamformer (ADBF) is effective in suppressing unexpected interferences arriving at the antenna array. An ADBF intellectual property (IP) using the floating point data type has been developed with high-level synthesis (HLS) technology ...
Shengxiang Zhu +3 more
doaj +2 more sources
A Real-Time Adaptive Station Beamforming Strategy for Next Generation Phased Array Radio Telescopes [PDF]
SensorsThe next generation phased array radio telescopes, such as the Square Kilometre Array (SKA) low frequency aperture array, suffer from RF interference (RFI) because of the large field of view of antenna element.
Guoliang Peng +4 more
doaj +2 more sources
Robust Adaptive Transmit Beamforming under the Constraint of Low Peak-to-Average Ratio
Sensors, 2022 In radar detection, in order to make the beam have variable directivity, a Capon beamformer is usually used. Although this traditional beamformer enjoys both high resolution and good interference suppression, it usually leads to high sidelobe and is ...
Hongtao Li +3 more
doaj +1 more source
Fixed and adaptive beamforming improves speech perception in noise in cochlear implant recipients equipped with the MED-EL SONNET audio processor. [PDF]
PLoS ONE, 2018 To determine the impact of the fixed and adaptive beamforming technology of the new MED-EL SONNET cochlear implant audio processor on speech perception in noise.The study cohort comprises 18 postlingually deafened adult cochlear implant recipients with ...
Clemens Honeder +6 more
doaj +1 more source
Advanced beamformers for cochlear implant users: acute measurement of speech perception in challenging listening conditions. [PDF]
PLoS ONE, 2014 OBJECTIVE: To investigate the performance of monaural and binaural beamforming technology with an additional noise reduction algorithm, in cochlear implant recipients.
Andreas Buechner +4 more
doaj +1 more source