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Suppression of oceanic reverberation by subspace methods
The Journal of the Acoustical Society of America, 2008Acoustic signal processing in shallow water environments is a challenging problem because of the presence of reverberation. Based on some models of reverberation, data from sensors array is pretreated to suppress reverberation. Considering reverberation as a sum of echoes of transmitted signal, the principal component inverse (PCI) algorithm deletes ...
Xuan Li, Xiaochuan Ma, Chaohuan Hou
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Multi-ping Reverberation Suppression Combined with Spatial Continuity of Target Motion
IEEE/OES China Ocean Acoustics, 2021Reverberation suppression is necessarily required for detecting the underwater low-speed small targets (e.g., frogmen and UUVs). In recent years, the promising reverberation suppression method is to use the correlation characteristics between multi-ping ...
Ruixin Nie +3 more
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Sand dune reverberation and its suppression
The Leading Edge, 1998When conducting seismic exploration in desert areas, we find a strong reverberation between the sand dune surface and the desert floor — a similar situation occurs between the water surface and the sea floor. The reverberation as noise in onshore seismic prospecting is ignored for it does not behave regularly as in offshore cases.
Yun Ling, Jun Gao, Rujie Zhang
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The Journal of the Acoustical Society of America, 2015
The behavior of the propagation delays introduced in dual frequency band ultrasound imaging is discussed. In particular, the delay of reverberation noise components is examined. Using a delay corrected subtraction (DCS) method, it is possible to suppress the reverberation noise if the behavior of the propagation delays is known. Here, a signal adaptive
Ole Martin, Brende, Bjørn, Angelsen
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The behavior of the propagation delays introduced in dual frequency band ultrasound imaging is discussed. In particular, the delay of reverberation noise components is examined. Using a delay corrected subtraction (DCS) method, it is possible to suppress the reverberation noise if the behavior of the propagation delays is known. Here, a signal adaptive
Ole Martin, Brende, Bjørn, Angelsen
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Reverberation suppression of underwater moving sonar platform based on tensor decomposition.
Journal of the Acoustical Society of AmericaThe movement of sonar platform and the time-varying underwater acoustic environment introduce additional unstable reverberation component, resulting in a degradation of the performance of traditional methods that exploit the low-rank characteristics of ...
Xueli Sheng +4 more
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Reverberation Suppression and Modeling
1993We apply the Principal Component Inverse (PCI) method of rapidly adaptive interference suppression and signal detection to reverberation suppression and modeling. We present preliminary results for the challenging example in which the transmitted pulse is a two-second burst of hyperbolic frequency-modulated (HFM) sinusoid sweeping from 210 Hz to 280 Hz.
D. W. Tufts, D. H. Kil, R. R. Slater
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Fast Reverberation Suppression Method in Active Sonar Detection Using a Subspace Learning Model
Marine GeodesyA fast reverberation suppression method is proposed for underwater target detection in ports and other locations. Given the strong correlation between multi-frame reverberations, the reverberation and target in multi-frame data are modeled into low-rank ...
Cheng Wang +4 more
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Lasso-based reverberation suppression in automatic speech Recognition
2015 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2015Far-field automatic speech recognition (ASR) is challenging, mainly attributed to the high reverberation in the recordings. A novel linear sparse prediction model has been proposed to estimate and suppress reverberation. This model considers reverberation as a mixture of early and late reflections of the direct signal and estimates the late reflection ...
Xuewei Zhang, Yiye Lin, Dong Wang 0013
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PCI Reverberation Suppression Method for Boiler Tube Leakage Based on Acoustic Signal Correlation
IEEE Transactions on Instrumentation and MeasurementThe safe and economical operation of boiler units is adversely affected by boiler tube leakages, making the accurate localization of leakage points crucial.
Chao Wang +4 more
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A GRU-Based Late Reverberation Suppression Method for Single-Channel Speech Dereverberation
International Conference on Speech Technology and Human-Computer Dialogue, 2022Room reverberation can lead to a decrease in the intelligibility and recognizability of speech. Especially under long reverberation time, the reverberation can be an obstacle to many speech-related tasks.
Nuo Li +3 more
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