aspcol.kernelinterpolation.get_kernel_weighting_filter

aspcol.kernelinterpolation.get_kernel_weighting_filter(kernel_func, reg_param, mic_pos, integral_domain, mc_samples, num_freq, samplerate, c, *args)

Calculates kernel weighting filter A(w) in frequency domain see ‘Spatial active noise control based on kernel interpolation of sound field’ by Koyama et al.

Parameters:

• kernel_func (function) – with calling signature kernel_func(points1, points2, waveNum, *args)

• reg_param (float)

• mic_pos (ndarray of shape (num_mics, spatial_dim))

• integral_domain (instance of any Region object found is aspsim package)

• mc_samples (int) – how many monte carlo samples to be drawn for integration

• num_freq (int)

• samplerate (int)

• c (float) – speed of sound

• *args (arguments needed for kernel function except points1, points2, waveNum)

Returns:

• ndarray of shape (num_freq, num_mics, num_mics)

• For both diffuse and directional kernel P^H = P, so the hermitian tranpose should not do anything

• It is left in place in case a kernel function in the future changes that identity.