gastropy.resample_signal

gastropy.resample_signal#

gastropy.resample_signal(data, sfreq_orig, sfreq_target)[source]#

Resample a signal to a new sampling frequency.

Uses scipy.signal.resample for polyphase resampling.

Parameters:

  • data (array_like) – Input signal (1D array).

  • sfreq_orig (float) – Original sampling frequency in Hz.

  • sfreq_target (float) – Target sampling frequency in Hz.

Returns:

  • resampled (np.ndarray) – Resampled signal.

  • sfreq_actual (float) – Actual achieved sampling frequency (may differ slightly from target due to integer sample count rounding).

Raises:

ValueError – If the resampled signal would have fewer than 2 samples.

Examples

>>> import numpy as np
>>> from gastropy.signal import resample_signal
>>> sig = np.sin(2 * np.pi * 0.05 * np.arange(0, 300, 0.1))  # 10 Hz
>>> resampled, actual_rate = resample_signal(sig, 10.0, 2.0)
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