Design of Circular Differential Microphone Arrays

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Recently, we proposed a completely novel and efficient way to design differential beamforming algorithms for linear microphone arrays. Thanks to this very flexible approach, any order of differential arrays can be designed. Moreover, they can be made robust against white noise amplification, which is the main inconvenience in these types of arrays. The other well-known problem with linear arrays is that electronic steering is not really feasible.In this book, we extend all these fundamental ideas to circular microphone arrays and show that we can design small and compact differential arrays of...