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)