aspcol.soundfieldestimation.krr_stationary_mics_regularized_rdft

aspcol.soundfieldestimation.krr_stationary_mics_regularized_rdft(ir_mic, pos_mic, pos_eval, samplerate, c, reg_param, freqs_to_remove=0, kernel_func=None, kernel_args=None, reg_kernel_func=None, reg_kernel_args=None, verbose=False, max_cond=None, data_weighting=None)

Estimates the impulse responses at the evaluation points using kernel ridge regression.

Uses a regularization defined by a linear operator.

Parameters:

  • ir_mic (np.ndarray of shape (num_mics, ir_len)) – The impulse responses measure at the microphones.

  • pos_mic (np.ndarray of shape (num_mics, 3)) – The position of the microphones.

  • pos_eval (np.ndarray of shape (num_eval, 3)) – The position of the evaluation points.

  • c (float) – The speed of sound.

  • reg_param (float) – The regularization parameter

  • kernel_func (function) – The kernel function defined by the function space and the regularization specifically (R* R) Gamma(r, r’) The function should have the signature kernel_func(pos1, pos2, wave_num, *args) and return a kernel matrix which is a np.ndarray of shape (num_points1, num_points2, num_real_freqs, num_real_freqs). See documentation in kernel.py for more information.

  • kernel_args (list) – Additional arguments to the kernel function.

  • reg_kernel_func (function) – The kernel function defined by the function space and the regularization, specifically (R* R)^3 Gamma(r, r’). Format is the same as kernel_func.

  • reg_kernel_args (list) – Additional arguments to the reg_kernel_func.

  • verbose (bool) – If True, returns additional metadata and intermediate results.

Returns:

ir_eval – The estimated impulse responses at the evaluation points.

Return type:

np.ndarray of shape (num_freqs, num_eval)