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Minimax filters for microphone arrays

Publiceringsår: 1999
Språk: Engelska
Sidor: 1522-1524
Publikation/Tidskrift/Serie: IEEE Transactions on Circuits and Systems II: Analog and Digital Signal Processing
Volym: 46
Nummer: 12
Dokumenttyp: Artikel i tidskrift
Förlag: IEEE--Institute of Electrical and Electronics Engineers Inc.


Conventionally, minimax spatial/spectral filters for microphone arrays are designed by first discretizing the spatial and frequency domains into a finite number of grid points and then performing the optimization over these points. The drawback with this approach is that the response of the spatial/spectral filters in between the grid points can be poor. More recently, an approach that performs the minimax design over the continuum of points in the decision space has appeared in the literature. In this brief, we describe an approach to solving this continuous decision space design problem that is numerically more elegant and efficient. The effectiveness of the new method is illustrated by a numerical example.


  • Electrical Engineering, Electronic Engineering, Information Engineering



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