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In the correlation-based leak location, it is supposed that the correlative components in the spatially separately collected acoustic signals merely result from a leak or leaks. This is why a false leak location will be produced when there is a non-leak acoustic source occurring outside a pipeline. To void a false leak location, it is necessary to detect whether or not a real leak exists in the pipeline...
In this paper, we investigate post-processing for the frequency-domain blind source separation (FD-BSS) in hearing aids applications. It is known that the segregate quality of FD-BSS degrades severely in the challenging scenario of reverberant enclosures or moving source situations. A robust two-stage dynamic programming approach based on inter-frequency correlation is presented to solving the permutation...
In order to reduce the underwater ultrasonic image speckles and to enhance the image characteristics, an anisotropic diffusion model is established based on the wavelet transform in this paper. At the same time, it also provides the steps of the algorithmic architecture and analyzes the key links of the model during its application. Two-check experiments have been done using simulation data and real...
The leak acoustic signals collected on pipelines play an important role in detecting a leak or leaks in buried pipelines. The traditional detection methods have shown some promise in detecting leak in the absence of a fixed non-leak acoustic source occurring in or outside the detected pipeline. However, in practice, the leak signals are inevitably corrupted with these non-leak sounds as usual. In...
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