obspy.signal.filter.integer_decimation
- integer_decimation(data, decimation_factor)[source]
Downsampling by applying a simple integer decimation.
Make sure that no signal is present in frequency bands above the new Nyquist frequency (samp_rate/2/decimation_factor), e.g. by applying a lowpass filter beforehand! New sampling rate is old sampling rate divided by decimation_factor.
- Parameters
data (numpy.ndarray) – Data to filter.
decimation_factor – Integer decimation factor
- Returns
Downsampled data (array length: old length / decimation_factor)