Double the acoustic S-matrix.
By default this function doubles the S-matrix but it can also create a \(2^n\)-fold repetition of itself:
n (int, optional) – Number of times to double itself. Defaults to 1.
AcousticSMatrix
acoustotreams.AcousticSMatrices.bands_kz
acoustotreams.AcousticSMatrices.from_array