Results 1 to 10 of about 1,082 (250)

Robust Reverberation Suppression Method Based on Alternating Projections [PDF]

open access: yesSensors
By leveraging the high correlation between multi-ping echo data, low-rank and sparse decomposition methods are applied for reverberation suppression.
Xiongwei Xiao, Feng Xu, Juan Yang
doaj   +6 more sources

A Reverberation Suppression Method Based on the Joint Design of a PTFM Waveform and Receiver Filter [PDF]

open access: yesEntropy, 2022
Transmitting waveform design and signal processing method optimization are effective ways to improve a sonar system’s detection performance. In this study, the spectrum and ambiguity function characteristics of pulse trains of frequency modulation (PTFM)
Lei Yue   +3 more
doaj   +4 more sources

A construction method of reverberation suppression filter using an end-to-end network. [PDF]

open access: yesPLoS ONE, 2023
Reverberation is the primary background interference of active sonar systems in shallow water environments, affecting target position detection accuracy.
Zhen Wang, Hao Zhang, Xiao Chen, Yuan An
doaj   +2 more sources

A Wasserstein generative adversarial network with gradient penalty for active sonar signal reverberation suppression

open access: yesFrontiers in Marine Science, 2023
Reverberation is the primary background interference of active sonar systems in shallow water environments, affecting target position detection accuracy.
Zhen Wang   +6 more
doaj   +3 more sources

Reverberation Suppression Method for Active Sonar Systems Using Non-Negative Matrix Factorization With Pre-Trained Frequency Basis Matrix

open access: yesIEEE Access, 2021
In active sonar systems, detection always suffers from reverberation interference from multiple scatterers in oceanic environments; therefore, numerous studies have been conducted on reverberation suppression.
Geunhwan Kim, Seokjin Lee
doaj   +3 more sources

Blind binary masking for reverberation suppression in cochlear implants. [PDF]

open access: yesJ Acoust Soc Am, 2013
A monaural binary time-frequency (T-F) masking technique is proposed for suppressing reverberation. The mask is estimated for each T-F unit by extracting a variance-based feature from the reverberant signal and comparing it against an adaptive threshold.
Hazrati O, Lee J, Loizou PC.
europepmc   +4 more sources

Linear Frequency Modulated Reverberation Suppression Using Non-Negative Matrix Factorization Methods, Dechirping Transformation and Modulo Operation

open access: yesIEEE Access, 2020
In this study, we propose a reverberation suppression algorithm for linear frequency-modulated (LFM) pulse sonar systems using a non-negative matrix factorization (NMF) method.
Geunhwan Kim, Kyunkyung Lee, Seokjin Lee
doaj   +3 more sources

Reverberation Suppression in Echocardiography Using a Causal Convolutional Neural Network

open access: yesIEEE Access, 2023
While ultrasound imaging has seen vast technical advances over the last decades, trans-thoracic echocardiography still suffers from image quality degradation caused by acoustic interaction with inhomogeneous tissue layers between the transducer and the ...
Tollef Struksnes Jahren   +5 more
doaj   +2 more sources

Radon–full-waveform inversion for suppressing scalp reverberation and skull-induced aberration in transcranial photoacoustic computed tomography [PDF]

open access: yesPhotoacoustics
Photoacoustic computed tomography is promising for noninvasive imaging of cerebral function but is limited by skull-induced acoustic aberrations. Moreover, strong superficial signals from the scalp often produce reverberations within the skull, which ...
Jiawen Zhang   +8 more
doaj   +2 more sources

A Robust Bilinear Framework for Real-Time Speech Separation and Dereverberation in Wearable Augmented Reality [PDF]

open access: yesSensors
This paper presents a bilinear framework for real-time speech source separation and dereverberation tailored to wearable augmented reality devices operating in dynamic acoustic environments.
Alon Nemirovsky   +2 more
doaj   +2 more sources

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