Numerical Near Field Optimization of Weighted Delay-and-Sum Microphone Arrays

Inhalt:
A novel concept for the determination of the weighting coefficients for weighted delay-and-sum microphone arrays is introduced in this contribution. The concept is based on a numerical optimization of the reception characteristic of the microphone array. The optimization procedure is shown to improve the reception characteristic in such a way that it closely approximates a target which can be defined according to the application. Index Terms — Microphone arrays, beamforming, near field, numerical optimization