# Superdirectivity Beamformer for Circular microphone array

The matrix below represents the inverse of correlation matrix assuming diffuse noise field. I am unable to figure out the values of the elements of this matrix.

how to calculate $c_{M}(\omega)$ ?

• This snapshot is taken from "Design of Circular Differential Microphone Arrays," by Jacob Benesty Chapter 6. – MS Ganesh Dec 5 '17 at 7:21
• Hi MS Ganesh, question seems very broad, can you specify what is the matrix shown and what does it represents ? – Arpit Jain Dec 5 '17 at 7:43
• The matrix represents the inverse of diffuse noise. Its a noise correlation matrix. – MS Ganesh Dec 5 '17 at 9:03