Results 261 to 270 of about 777,330 (303)

Electronic Suppression of Reverberation

The Journal of the Acoustical Society of America, 1967
Several methods for electronic processing of reverberant sound signals to suppress echoes and reverberation are discussed. Potential applications of these methods in sound reinforcement, conference telephony, and underwater speech communication are described. The implications of a recently proposed self-adaptive echo canceler [M. M. Sondhi, J.
openaire   +1 more source

Enabling High-speed Ultrasound Communication Through Thin Plates by Reverberation Suppression

IUS, 2021
In all digital communications, knowledge of the propagation channel between the transmitter and the receiver is essential. For transmitting of data through solid bodies, such as metal plates, pipe walls, etc., ultrasound is a viable alternative to radio ...
Asra Ashraf, J. Carlson, Fredrik Reinholdsen, J. van de Beek   +3 more
semanticscholar   +1 more source

Space-time ODN suppressing reverberation method

2008 9th International Conference on Signal Processing, 2008
Reverberation of active sonar that resemble clutter of airborne radar has space-time coupling characteristic. Based on which, a method of space-time ODN reverberation is presented in this paper. Project matrix method is utilized to design time and space ODN filters.
null Zhan Haoke, null Cai Zhiming, null Yuan Bingcheng   +2 more
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AWSUM Filter Aided ADMM for Reverberation Suppression in Very Shallow Water

International Conference on Signal Processing Systems
The water depth of very shallow water environment is much smaller than the that of a shallow water environment. The water depth of a typical very shallow water environment leads to a more severe interface scattering effect during the propagation of the ...
S. Tian, Xionghou Liu, Yixin Yang
semanticscholar   +1 more source

The STAP Method for Moving Sonar Reverberation Suppression

Applied Mechanics and Materials, 2015
The theory of full dimension and reduced dimension STAP was introduced. Based on the physical mechanism of reverberation formation, the suppression of moving sonar reverberation and the possibility of improvement of detection performance were analyzed and discussed, and the solutions of several key steps were given.
S.D. Zhao, Kun Yan, T.Z. Zhou
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Reverberation suppression based on a spatial-temporal patch tensor model in a moving target scenario

International Conference on Signal Processing, Communications and Computing
In shallow water, the performance of fixed active sonar is severely limited when detecting small underwater moving targets. In order to improve the detection performance of fixed active sonar, this paper proposes a reverberation suppression method based ...
Wenbo Gou, Hong Liang, Zezhou Dai, Linfeng Zhu   +3 more
semanticscholar   +1 more source

The reverberation suppression in wideband diver detection sonar

2014 Oceans - St. John's, 2014
The reverberation suppression is the foundation of target detection in diver detection sonar. The reverberation caused by the sea bottom is generally strong. Conventional methods with only amplitude cannot remove these reverberations completely because of the random temporal fluctuation of the signal amplitude, which causes false alarms especially in ...
Yang Juan, Xu Feng, Liu Jia, An Xudong, Ji Yongqiang   +4 more
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Shallow sea reverberation suppression based on a range azimuth patch matrix model.

Journal of the Acoustical Society of America
Reverberation is the main background interference for active sonar detection in shallow sea. Reverberation suppression is crucial for enhancing the performance of active sonar.
Wenbo Gou, Hui Li, Hong Liang, Zezhou Dai, Shaohua Jiao   +4 more
semanticscholar   +1 more source

Reverberation characterization and suppression by means of principal components

IEEE Oceanic Engineering Society. OCEANS'98. Conference Proceedings (Cat. No.98CH36259), 2002
We apply the principal component inverse (PCI) method of rapidly adaptive interference suppression to the problem of separating the strong components of reverberation in an active reverberation experiment. A best low-rank estimate of a reverberation return is extracted by decomposing the returns into short duration subintervals over which the signal is
T.A. Palka, D.W. Tufts
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Online Estimation of Reverberation Parameters For Late Residual Echo Suppression

IEEE/ACM Transactions on Audio, Speech, and Language Processing, 2020
In hands-free telephony and other distant-talk applications, often a short AEC filter is used to achieve fast convergence at low computational cost. As a result, a significant amount of late residual echo (LRE) may remain, especially in highly reverberant environments.
Naveen Kumar Desiraju, Simon Doclo, Markus Buck, Tobias Wolff   +3 more
openaire   +1 more source