Module: tide.resampling

Signal resampling utilities used by CFL-driven internal sub-stepping.

Functions

• cosine_taper_end
• zero_last_element_of_final_dimension
• upsample
• downsample
• downsample_and_movedim

upsample

Low-pass upsampling on the last dimension.

Typical use: - Called internally when CFL requires internal dt < user dt. - Can be used manually for source preprocessing.

downsample

Frequency-limited downsampling on the last dimension.

Typical use: - Called internally to bring receiver traces back to user sampling interval.

downsample_and_movedim

Convenience wrapper: - expects receiver_amplitudes shaped [nt, n_shots, n_receivers] - processes time on the last axis internally - returns [n_shots, n_receivers, nt_downsampled]