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On the Sparse Beamformer Design
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DOI：10.3390/s18103536.png)
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摘要
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In designing acoustic broadband beamformers, the complexity can grow significantly when the number of microphones and the filter length increase. It is advantageous if many of the filter coefficients are zeroes so that the implementation can be executed with less computation. Moreover, the size of the array can also be pruned to reduce complexity. These problems are addressed in this paper. A suitable optimization model is proposed. Both array pruning and filter thinning can be solved together as a two-stage optimization problem to yield the final sparse designs. Numerical results show that the complexity of the designed beamformers can be reduced significantly with minimal effect on performance.
Keyword:
beamformer design
signal enhancement
array pruning
sparse filters
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3.5
论文数:
7.2W
被引数:
20.9W
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