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Books > Professional & Technical > Electronics & communications engineering > Electronics engineering > Applied optics
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Design of Circular Differential Microphone Arrays (Hardcover, 2015 ed.)
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Design of Circular Differential Microphone Arrays (Hardcover, 2015 ed.)
Series: Springer Topics in Signal Processing, 12
Expected to ship within 12 - 17 working days
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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 any order that can be
electronically steered in many different directions and offer a
good degree of control of the white noise amplification problem,
high directional gain, and frequency-independent response. We also
present a number of practical examples, demonstrating that
differential beamforming with circular microphone arrays is likely
one of the best candidates for applications involving speech
enhancement (i.e., noise reduction and dereverberation). Nearly all
of the material presented is new and will be of great interest to
engineers, students, and researchers working with microphone arrays
and their applications in all types of telecommunications, security
and surveillance contexts.
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