Abstract
In this chapter, we show how the classical adaptive beamforming technique is related to differential circular arrays. From this important and useful relationship, we then derive a minimum-norm filter for the design of any order differential array, which can be robust against white noise amplification. This approach exploits the fact that the number of microphones can be much larger than the order of the CDMA. As a result, the more microphones, the more robust is the CDMA for a predetermined order.
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Benesty, J., Chen, J., Cohen, I. (2015). Minimum-Norm Solution for Robust Circular Differential Arrays. In: Design of Circular Differential Microphone Arrays. Springer Topics in Signal Processing, vol 12. Springer, Cham. https://doi.org/10.1007/978-3-319-14842-7_7
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DOI: https://doi.org/10.1007/978-3-319-14842-7_7
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