aspcol.soundfieldestimation_jax.krr_moving_mic_rff

aspcol.soundfieldestimation_jax.krr_moving_mic_rff(p, pos, pos_eval, sequence, samplerate, c, reg_param, num_basis=64, key=None, return_params=False, direction=None, beta=None, same_direction_for_all_freqs=True)

Sound field estimation with moving microphone using KRR with random Fourier features

Parameters:

• p (ndarray of shape (N)) – sound pressure for each sample of the moving microphone

• pos (ndarray of shape (N, 3)) – position of the trajectory for each sample

• pos_eval (ndarray of shape (num_eval, 3)) – positions of the evaluation points

• sequence (ndarray of shape (seq_len)) – N is a multiple of seq_len. The loudspeaker sequence used for the measurements, which is assumed to be periodic with period seq_len

• samplerate (int)

• c (float) – speed of sound

• reg_param (float) – regularization parameter

• num_basis (int, optional) – number of random basis directions to use, by default 64

Notes

Uses the diffuse kernel implicitly the reg_param is not identical to the standard KRR methods, and so might have to be chosen differently The params returns by return_params can be interpreted as plane wave coefficients, but are not the same as the standard krr parameters